bStep-by-step explanation:
In a group of 200 children 35 are allergic to peanuts . What percentage of children are allergic to peanuts?
The percentage of children allergic to peanuts is 17.5%
What are percentages?The term 'per cent' means 'out of a hundred'. In mathematics, percentages are used like fractions and decimals, as ways to describe parts of a whole. When you are using percentages, the whole is considered to be made up of a hundred equal parts.
Given here, 200 children out of which 35 are allergic thus in percentage terms we have (35/200)×100 =17.5%
Hence, The percentage of children allergic to peanuts is 17.5%
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What does ∆ mean in math?
Answer:
As far as I know, in math, Δ means:
triangledelta (slope)Examples:
ΔABC ≅ ΔDEF
"triangle ABC is congruent to triangle DEF"Δ = [tex]\frac{1}{2}[/tex]
"delta equals 1 over 2"Delta is another word for "slope""the slope equals 1 over 2"What is the value of x in the sequence 20 10 10 15 30 75 x?
The value of x in the given sequence is found as 225.
Explain the term sequence?A list containing numbers in a specific order is called a sequence. A term is the name given to each number in such a sequence. A sequence has a place for each phrase (first, second, third and so on). The length of a sequence is the number of arranged elements (potentially infinite).20/2 = 10 (0.5)
10x10 = 1 (1)
10x1.5 = 15 (1.5)
15x2 = 30 (2)
30x2.5 = 75 (2.5)
There is an increase of 0.5 in each term and then multiplies it with the previous term.
So,
{ 2.5 + 0.5 = 3 }
75x3 = 225 (3)
Thus, the value of the x in the given sequence is found as 225.
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19.Give the journal entries to rectify the following errors using suspense account, where necessary. i. Rs 3,000 received from a customer as an advance against order was credited to sales account. ii. A sum of Rs 800 written-off as depreciation on machinery, were not posted to depreciation account. iii. Purchase of a scooter was debited to conveyance account Rs 16,000. Firm charges 10% depreciation on vehicles. iv. Payment of Rs 500 to Mohan and Rs 600 to Sohan was made but Mohan was debited with Rs 600 and Sohan with Rs 500. v. Sales to X Rs 500 were posted to Y ’s account
Answer:
Step-by-step explanation:
To rectify the errors using a suspense account, the following journal entries can be made:
i. Rs 3,000 received from a customer as an advance against order was credited to sales account.
To correct this error, we can make the following journal entry:
Debit Suspense Account 3,000
Credit Sales Account 3,000
ii. A sum of Rs 800 written-off as depreciation on machinery, were not posted to depreciation account.
To correct this error, we can make the following journal entry:
Debit Depreciation Account 800
Credit Suspense Account 800
iii. Purchase of a scooter was debited to conveyance account Rs 16,000. Firm charges 10% depreciation on vehicles.
To correct this error, we can make the following journal entries:
Debit Suspense Account 1,600
Credit Conveyance Account 1,600
Debit Depreciation Account 1,600
Credit Suspense Account 1,600
iv. Payment of Rs 500 to Mohan and Rs 600 to Sohan was made but Mohan was debited with Rs 600 and Sohan with Rs 500.
To correct this error, we can make the following journal entries:
Debit Suspense Account 100
Credit Mohan 600
Debit Sohan 500
Credit Suspense Account 100
v. Sales to X Rs 500 were posted to Y’s account
To correct this error, we can make the following journal entries:
Debit Y 500
Credit Suspense Account 500
Debit Suspense Account 500
Credit X 500
The question is in the picture.I’ll mark Brainliest!
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How do you describe the graph of the solution set of a quadratic inequality?
A quadratic inequality of the form
y>a[tex]x^{2}[/tex]+bx+c
(or substitute <,≥ or ≤ for > ) represents a region of the plane bounded by a parabola .
A quadratic inequality of the form
y>a[tex]x^{2}[/tex]+bx+c
(or substitute <,≥ or ≤ for > ) represents a region of the plane bounded by a parabola .
To graph a quadratic inequality, start by graphing the parabola. Then fill in the region either above or below it, depending on the inequality.
If the inequality symbol is ≤ or ≥ , then the region includes the parabola, so it should be graphed with a solid line.
Otherwise, if the inequality symbol is < or > , the parabola should be drawn with a dotted line to indicate that the region does not include its boundary.
Example:
Graph the quadratic inequality.
y≤[tex]x^{2}[/tex]−x−12
The related equation is:
y=[tex]x^{2}[/tex]−x−12
First we notice that a , the coefficient of the x2 term, is equal to 1 . Since a is positive, the parabola points upward.
The right side can be factored as:
y=(x+3)(x−4)
So the parabola has x -intercepts at −3 and 4 . The vertex must lie midway between these, so the x -coordinate of the vertex is 0.5 .
Plugging in this x -value, we get:
y=(0.5+3)(0.5−4)
y=(3.5)(−3.5)
y=−12.25
So, the vertex is at (0.5,−12.25) .
We now have enough information to graph the parabola. Remember to graph it with a solid line, since the inequality is "less than or equal to".
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(x-2)^2+(y+2)^2=4 please help!
Answer:
this answer can't be solved because there are two variables we need at least value of at least one variable
Answer:
y/x=2-x/y+2
Step-by-step explanation:
Solve pls brainliest
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How to solve 997 1 ⁄ 3?
The value of the given mixed fraction 997 1 / 3 is equal to 2992 / 3.
As given in the question,
Given expression is equal to,
997 1 / 3
Simplify the mixed fraction using following method in standard form :
Q R / D = [ ( D × Q ) + R ] / D
In the numerator multiply divisor (D) to the quotient (Q) and add it to the remainder (R).
Denominator of the expression remain same.
Here Q = 997 , R = 1 and D = 3
Substitute the value in the formula we get,
997 1 / 3
= [ ( 3 × 997 ) + 1 ] / 3
= ( 2991 + 1 ) / 3
= 2992 / 3
Therefore, the value of the given mixed fraction is equal to 2992 / 3.
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Solve the IVPs by the Laplace transform. If necessary, use partial fraction expansion as in Example 4 of the text: Show all details. 1. Y’ + 5. 2y = 19. 4 sin 2t, y(0) = 0 2. Y’ + 2y = 0, y(0) = 1. 5 3. Y" – y’ + 6y = 0, y(0) = 11, y’(0) = 28 4. Y" + 9y = I0e^(-t) y(0) = 0, Y’(0) = 0 5. Y" – 1/4y = 0, y(0) = 12, Y’(0) = 0 6. Y" - 6y’ + 5y = 29 cos 2t, y(0) 3. 2 Y’(0) = 6. 2 7. Y" + 7y' + 12y = 21e^3t, y(0) 3. 5 y’(0) = -10 8. Y" - 4y' + 4y = 0, y(0) 8. 1, y’(0) = 3. 9 9. Y" - 4y' + 3y = 6t - 8, y(0) = 0, y’(0) = 0 10. Y" + 0. 04y = 0. 02t^2 y(0)=-25, y’(0)=0
y(t)= 3/5[tex]e^{-5.2}[/tex]-3/5esin2t-9/5sin2t when the IVP's is y'+5.2y=19.4sin2t, and y(0)=0 by Laplace transform and partial fraction.
Given that,
We have to solve the IVP's by the Laplace transform.
If necessary we have to use partial fraction expansion for y'+5.2y=19.4sin2t, and y(0)=0
We know that,
y'+5.2y=19.4sin2t, and y(0)=0
L(y(t))= y(s)
L(y'(t)) = sy(s) and
L(sin2t) = s/s²+4 ------->equation(1)
Thus if we take Laplace transform on both sides of the given equation
L(y'+5.2y)=L(19.4sin2t)
sy(s)-y(0)+5.2y(s) = 19.4L(sin2t)
y(s)[s+5.2]=19.4[s/s²+4] (from equation(1))
y(s)= 19.4[s/(s²+4)(s+5.2)]
Breaking left hand side into partial precautions,
y(s) = 3/5(1/s+5.2)-3/5(s/s²+4)-9/5(s/s²+4)
Taking inverse Laplace transform on both sides,
So,
y(t)= 3/5[tex]e^{-5.2}[/tex]-3/5esin2t-9/5sin2t
Therefore, y(t)= 3/5[tex]e^{-5.2}[/tex]-3/5esin2t-9/5sin2t when the IVP's is y'+5.2y=19.4sin2t, and y(0)=0 by Laplace transform and partial fraction.
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A bottle contains 7 8 of a pitcher of water. A cup can hold 3 16 of a pitcher of water. Eve wants to pour all the water from the bottle into some cups. How many cups does Eve need?
Answer:
at least 5
Step-by-step explanation:
You want to know the number of cups needed to contain 7/8 pitcher of water when each cup holds 3/16 pitcher.
CupsThe number of cups can be found by dividing the water quantity by the amount each cup holds:
(7/8 pitcher)/(3/16 pitcher/cup) = 14/3 cups = 4 2/3 cups
Eve needs at least 5 cups to hold the amount of water in the bottle.
__
Additional comment
If every cup is filled to capacity, then the 5th cup will be 2/3 full. The number of cups can be any number greater than or equal to 5.
If you want, you can write an inequality relating the capacity of the cups to the amount of water:
n(3/16) ≥ 7/8
n ≥ 4 2/3 . . . . . . . . . where n is a counting number
n ∈ {5, 6, 7, ...}
This more clearly shows that the number is not restricted to 5.
What is the probability that a 3 will be drawn out of a deck of 52 cards?
Answer:
1/13
Step-by-step explanation:
There are 4 cards that are a "3" in a deck of cards
3 of hearts, 3 of spades, 3 of clubs, 3 of diamonds
P( 3) = number of cards that are a "3" / total number of cards
P(3) = 4/52 = 1/13
Answer:
[tex]\frac{1}{13}[/tex] (one thirteenth)
1/13
Step-by-step explanation:
There's 4 of the card 3 in a deck. (3 of hearts, 3 of diamonds, 3 of clubs, 3 of spades.)
This means 4 of 52 cards are a 3, which makes the fraction [tex]\frac{4}{52}[/tex]. This is the probability.
This fraction can be simplified to [tex]\frac{1}{13}[/tex] by dividing the top and bottom by four. This is the final answer, since it is in the simplest form.
Please help me quick it is geometry
What is the formula of inverse proportion?
Inverse proportion is expressed by the equation x y = k or x = k/y. As a result, you can utilize the known values to get the constant k's value before applying this formula to determine all the other values.
Define the term inverse proportion?A statement describing the relationship between two variables or variables is known as a percentage. Such variables can be either directly proportional or inversely proportional, and both types are possible.It is inversely proportionate if one rises while the other falls.Inverse Proportional Method Solutions
Method 1: X1 Y1 = X2 Y2 is an inverse proportion.As one pair is always given, we may employ the equation to discover the unknown terms and so solve the problem.
Method 2: We also know that the equation x + y = k turns x = k/y in an inverse proportion. Therefore, with the aid of the aforementioned, we may use the absolute values to identify the unknown ones in order to determine the value of proportionality constant k.To know more about the inverse proportion, here
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FOR 100 POINTS AND BRAINLIEST HURRTRRRRYYY
The water level is a number that indicates whether the level is above or below normal using positive or negative values. After a heavy storm, the water level of a river is −3.7 feet. This level is 1/2 times 2.5 feet more than the previous water level.
What was the previous water level?
Drag and drop a value into the box to correctly complete the statement
answer choices-
-18.5
-9.9
-4.9
-4.3
The previous water level is -9.9 feet. The correct option is B.
What is an expression?Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols.
The numerical variables and operations denoted by the addition, subtraction, multiplication, and division signs are combined in the mathematical expression. They can also denote the operation order and other properties of the logical syntax.
Given that after a heavy storm, the water level of a river is −3.7 feet. This level is 1/2 times 2.5 feet more than the previous water level.
The previous water level is calculated as,
1/2 ( x + 2.5 ) = -3.7
x + 2.5 = -7.4
x = -7.4 - 2.5
x = -9.9
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Step-by-step explanation:
Let's solve this problem step by step. The current water level is -3.7 feet, which is 1/2 times 2.5 feet more than the previous water level. Let's call the previous water level "x".
So, we can write an equation to represent this relationship:
-3.7 = x + (1/2) * 2.5
Now, let's solve for x:
-3.7 = x + 1.25
x = -3.7 - 1.25
x = -4.95
So, the previous water level was **-4.95 feet**.
Out of the answer choices you provided, the closest value to the correct answer is **-4.9**.
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Solve 2x²-8=0
A. X = 4
B. X = 2
C. x = 4, -4
D.x = 2, -2
Answer:
D. x=2, -2
Step-by-step explanation:
I think you're asking for the correct answer to the problem because all of the values for x won't work for the equation.
So all we have to do is simplify the equation to isolate x.
[tex]2x^2-8=0[/tex] (original problem)
[tex]2x^2=8[/tex] (add 8 to both sides)
[tex]x^2=4[/tex] (divide both sides by 2)
[tex]x=2, x=-2[/tex] (find the square root of both sides)
Note that x = ±2 and note just 2 because both [tex]2^2[/tex] and [tex](-2)^2[/tex] [tex]=4[/tex].
Hope this helped :D
i need help with these
1. Your shooting percentage was 60%.
2. Your friend made 24 shots.
3. Hi Lowe's shooting percentage was 71%.
4. Julie Shootsalott made 17 shots.
5. Swish Malone's shooting percentage was 89%.
6. Slammin' Sammy made 19 shots.
7. Lightning Lizzy's shooting percentage was 94%.
8. The team's shooting percentage was 65%.
1. To calculate the shooting percentage,
divide the number of shots made (i.e..12) by the total number of shots taken(i.e.20)
12/20 = 0.6
Multiply this by 100 to get the percentage, which is 60%.
2. To calculate no. of shots,
multiply the shooting percentage (i.e.60%) by the total number of shots taken (i.e.40)
0.6 x 40 = 24
3. To calculate Hi Lowe's shooting percentage,
divide the number of shots made (i.e.25) by the total number of photos taken (i.e.35).
25/35 = 0.714
Multiply this by 100 to get the percentage,
which is 71.4%
4. To calculate Julie Shootsalott's shots,
multiply the shooting percentage (34%) by the total number of shots taken (50).
0.34 x 50 = 17
5. Swish Malone's shooting percentage was 89.3%. To calculate this, divide the number of shots made (i.e.25) by the total number of photos taken (i.e.28).
25/28 = 0.893
Multiply this by 100 to get the percentage,
which is 89.3%
6. To calculate Slammin' Sammy shots,
multiply the shooting percentage (i.e.95%) by the total number of shots taken (i.e.20)
0.95 x 20 = 19
7. To calculate Lightning Lizzy's shooting percentage,
divide the number of shots made (i.e.34) by the total number of shots taken (i,e,36)
34/36 = 0.944
Multiply this by 100 to get the percentage,
which is 94.4%
8. To calculate The team's shooting percentage,
divide the number of shots made (i.e.44) by the total number of shots taken (i.e.68). 44/68 = 0.647
Multiply this by 100 to get the percentage,
which is 64.7%.
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What do Total Productive Maintenance (TPM) practices ensure? Select an answer: O equipment availability is minimized
O machines do not break down so often O scheduled maintenance is not necessary O equipment downtime is maximized
Total Productive Maintenance (TPM) practices ensure D. equipment downtime is maximized
What is Total Productive Maintenance?According to TPM, operators are in charge of sanitizing, enhancing, and maintaining their workstations to guarantee quality and safety throughout production cycles. The objective of TPM is to maintain equipment in top working order to ensure that production processes go without hiccups or delays.
Through the optimization of equipment availability and performance, TPM seeks to increase overall productivity and quality. The 5S methodology, a method of workforce organization that aids in streamlining and standardizing facility procedures, is the foundation on which TPM is based.
Therefore, the correct option is D.
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How many years would it take a 6000$ loan at 5% to earn 12000$ in interest?
Answer: 15 years
Step-by-step explanation:
6000 x 1.05^x = 12000
1.05^x=2
log(1.05^x)=log(2)(Take log of both sides)
x*(log(1.05))=log(2)
x= log(2)
log(1.05)
x=14.206699
15 years
How do you prove two triangles are similar using transformations?
To see if the two triangles are similar, you first have to get them both in the same direction. You do this by rotating (turning) one shape to align with the other. Such a transformation is called a rotation.
Geometry transformations are movements of two-dimensional shapes in two dimensions, or within their plane. Like restricted game pieces on a game board, you can move two-dimensional shapes in only three ways:
Rotation -- Shapes are rotated or turned around an axisReflection -- Shapes are flipped across an imaginary line to make mirror imagesTranslation -- Shapes are slid across the planeTransform one of the triangles such that the orientation of the triangles is the same.
Identify the corresponding sides of the triangles and write each set of corresponding sides as a ratio. If the ratios of the side lengths are the same for all 3 sides, then the triangles are similar.
Hence, by performing two rigid motions, we can prove the congruence between these two triangles. Now once the triangles are superimposed, we can identify the corresponding parts by checking which side and angle of the initial triangle is superimposed on the transformed triangle.
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Determine whether each figure has rotational symmetry.
If so, determine the angle of rotation.
Raul works at a movie theatre. The function f(x) represents the amount of money in dollars Raul earns per ticket, where x is the number of tickets he sells. The function g(x) represents the number of tickets Raul sells per hour, where x is the number of hours he works.
f(x) = 3x2 + 16
g(x) = the square root of five times x cubed
Find f(g(x)).
The required function obtained after solving f(g(x)) will be equal to 15x³ + 16. Hence, option C is correct.
What is an equation?Mathematical expressions with two algebraic symbols on either side of the equal (=) sign are called equations.
This relationship is illustrated by the left and right expressions being equal to one another. The left-hand side equals the right-hand side is a basic, straightforward equation.
As per the functions given in the question,
f(x) = 3x² + 16
g(x) = √5x³
Now, find the function f(g(x)).
f(g(x)) = f(√5x³), [g(x) = √5x³]
f(g(x)) = 3( √5x³)² + 16 [f(x) = 3x² + 16]
So,
f(g(x)) = 3(5x³) + 16
f(g(x)) = 15x³ + 16
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Answer:
f(g(x)) = 15x^3 + 16 dollars / hour
I answered the quiz and it's correct
Which grapgh represents this system of inequalitys
y≤x +4
2x+y ≤-4
Answer:B
Step-by-step explanation:
Which graph represents the solution set of the system of inequalities? {y>−2x−2y≤x+4 A system of 2 linear inequalities graphed on a coordinate plane. The horizontal x-axis ranges from negative 5 to 5 in increments of 1. The vertical y-axis ranges from negative 5 to 5 in increments of 1. A dashed line passes through begin ordered pair negative 0.5 comma negative 1 end ordered pair, begin ordered pair negative 1 comma 0 end ordered pair and begin ordered pair 0 comma negative 2 end ordered pair. A solid line passes through begin ordered pair negative 0.5 comma negative 1 end ordered pair, begin ordered pair 0 comma 1 end ordered pair and begin ordered pair negative 1 comma negative 3 end ordered pair. The region below the dashed line and above the solid line is shaded. A system of 2 linear inequalities graphed on a coordinate plane. The horizontal x-axis ranges from negative 5 to 5 in increments of 1. The vertical y-axis ranges from negative 5 to 5 in increments of 1. A da
How do you solve 3 simultaneous equations using elimination?
Answer:
Write all the equations in standard form cleared of decimals or fractions.Choose a variable to eliminate; then choose any two of the three equations and eliminate the chosen variable.
Step-by-step explanation:
Who invented 0 number?
There are several hypotheses regarding how 0 was created. The idea of utilising 0 as a numeric value is thought to have originated in India. According to legend, Aryabhatta invented zero by using it as a placeholder number in the fifth century.
However, the idea of zero was not always present. Although the idea of nothingness or emptiness existed, applying it numerically had a profound effect on mathematics. The principles for zero were laid forth by Brahmagupta in the seventh century.
In America, the Mayans developed the idea of zero as a placeholder in the 4th century. But though being skilled in mathematics, they never thought the idea of using it in equations.
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Bones brothers & associates prepare individual tax returns. Over prior years, bones brothers has maintained careful records regarding the time to prepare a return. The mean time to prepare a return is 90 minutes, and the population standard deviation of this distribution is 15 minutes. Suppose 100 returns from this year are selected and analyzed regarding the preparation time. What is the probability that the mean time for the sample of 100 returns for this year is greater than 92?.
The probability that the mean time for the sample of 100 returns for this year is greater than 92 is 0.0764.
The term probability in math refers the possibility of occurring the event.
Here we have given that Bones brothers & associates prepare individual tax returns. Over prior years, bones brothers has maintained careful records regarding the time to prepare a return.
And we need to find the probability that the mean time for the sample of 100 returns for this year is greater than 92
As per the given question, we know the following values,
=> mean,μ=90
=> population standard deviation,σ=14
=> sample size ,n=100
Then the standard error is 1.4
Therefore, the z value is obtained by the z table is 0.9236.
Then the resulting probability is calculated.
=> 1 - 0.9236
=> 0.0764
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What is the solution of simultaneous equations 5x 3y 8 and 3x Y 2?
The solution of simultaneous equations 5x-3y=8 and 3x+Y=2 is (1,-1)
A linear equation is an equation in which each term has at max one degree. Linear equations in variables x and y can be written in the form y=mx+c
Linear equation with two variables, when graphed on the cartesian plane with axes of those variables, give a straight line.
The given equations are:
5x-3y=8 ------(1)
3x+y=2 -------(2)
By solving the equations we get the points
Multiply equation(1) by 3 and equation (2) by 5 then we get
15x-9y=24
15x+5y=10
By solving the above equations we get x and y values.
-14y=14
y=-1
substitute y=-1 in equation(1) we get x value.
5x-3(-1)=8
5x=5
x=1
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How do you find the domain step by step?
Using the provided function and finding the values of input for which it will provide valid output values we can find the domain.
What is the difference between domain an range?The range of values that we are permitted to enter into our function is known as the domain of a function. The x values for a function like f make up this set (x). A function's range is the collection of values it can take as input. After we enter an x value, the function outputs this sequence of values.
Can a function's domain and range be the same?Yes. For instance, the set of all real numbers is the domain and range of the cube root function.
Choose the input values.
Exclude any real numbers that produce a negative value in the radicand because there is an even root. Solve for x by setting the radicand to be greater than or equal to zero.
The domain of the function is the solution(s). If at all possible, format your response as an interval.
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What is the meaning of AAA theorem?
If three angles of one triangle are congruent to three angles of another triangle then by the AAA similarity theorem, the two triangles are similar. Actually, you need only two angles of one triangle being congruent to two angle of the second triangle.
How to prove AAA Theorem?
Specifying three angles A, B, and C does not uniquely define a triangle, but any two triangles with the same angles are similar. Specifying two angles of a triangle automatically gives the third since the sum of angles in a triangle sums to 180 degrees (pi radians), i.e.,
C = π - A - B .
Prove:
Triangles ABC and DEF such that ∠A = ∠D; ∠B = ∠E; ∠C = ∠F
Δ ABC ~ ΔDEF
Construction : We mark point P on the line DE and Q on the line DF such that AB = DP and AC = DQ, we join PQ.
There are three cases :
Case ( i ) : AB = DE, thus P coincides with E.
⇒ AB = DE, BC = EF and AC = DF
Consequently, Q coincides with F.
AB BC CA
---- = ------ = ------
DE EF FA
Since the corresponding angles are equal, we conclude that Δ ABC ~ Δ DEF.
Case( ii ) : AB < DE. Then P lies in DE
In triangles ABC and DPQ,
Statements ------ Reasons
1) AB = DP- 1) By construction
2) ∠A = ∠D -2) Given
3) AC = DQ -3) By construction
4) ΔABC ≅ ΔDPQ -4) By SAS postulate
5) ∠B = ∠DPQ 5) CPCTC
6) ∠B = ∠E- 6) Given
7) ∠E = ∠DPQ- 7) By transitive property
( from above)
8) PQ || EF -8) If two corresponding angles are congruent then the lines are parallel
9) DP/DE = DQ/DF -9) By basic proportionality theorem
10) AB/DE = BC/EF- 10) By construction
11) AB/DE = AC/DF- 11) By substitution property
12) Δ ABC ~ Δ DEF - 12) By SAS postulate
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What is null set in math grade 7?
A null set is a set that contains no elements in mathematics, that is it is empty. It is also called empty set or void set.
It is denoted by the Greek letter Ф (phi). It is expressed as {}.
A null set is formed by intersection of two disjoint sets. For example, a set of odd numbers, say A = {1, 3, 5, ...} and set of even numbers say B = {0, 2, 4, ...}. A set of number of both odd and even is a null set as these sets A and B doesnt have any element in common, that is they are disjoint set.
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