Step-by-step explanation:
[tex] {x}^{2} + 8x + 7 \\ [/tex]
Expresar en la forma más simple: (3x² + 4x - 8) - (-2x² + 4x + 2)
The simplest form of the given expression (3x² + 4x - 8) - (-2x² + 4x + 2) will be 5x² - 10.
What is a quadratic equation?A quadratic equation is the second-order degree algebraic expression in a variable.
The standard form of this expression is ax² + bx + c = 0 where a. b are coefficients and x is the variable and c is a constant.
We have been given an expression
(3x² + 4x - 8) - (-2x² + 4x + 2)
(3x² + 4x - 8 + 2x² - 4x - 2)
Solving like terms
5x² + 4x - 4x - 10
5x² - 10
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An angle measure 20 more than the measure of its supplementary angle.What is the measure of each angle?
Based on the definition of supplementary angles, the measure of both angles are: 80° and 100°.
What are Supplementary Angles?The sum of angles that are supplementary to each other equals 180 degrees.
Let the measure of the supplementary angle be x.
The other angle will be: x + 20.
(x + 20) + x = 180
x + 20 + x = 180
2x + 20 = 180
2x = 180 - 20
2x = 160
x = 160/2
x = 80°
The other angle will be x + 20 = 80 + 20 = 100°.
The measure of the angles are: 80° and 100°.
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Identify the fractions labeled with the letters a and b on the scale below
In the given fraction, we have the value of 1 divided in four portions and we just have to identify which portion does A and B fall into
FractionThis can be defined as a part of portion of a complete value.
In the first part, the portion A is representing 1 out of 5 parts. So, the fraction of A is
[tex]A = \frac{1}{5}[/tex]
In the second fraction B, we can say that B is representing 3 out of 5 parts.
[tex]B = \frac{3}{5}[/tex]
From the above, the value of A and B are
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can you please help me? 2.1.3
[tex]~~(2I_2)A\\\\\\=2\begin{bmatrix} 1&0\\0&1 \end{bmatrix}\begin{bmatrix} 4&2\\3&-3 \end{bmatrix}\\\\\\=\begin{bmatrix} 2&0\\0&2 \end{bmatrix}\begin{bmatrix} 4&2\\3&-3 \end{bmatrix}\\\\\\=\begin{bmatrix} 8+0&4+0\\0+6&0-6 \end{bmatrix}\\\\\\=\begin{bmatrix} 8&4\\6&-6 \end{bmatrix}[/tex]
express as a mixed fraction 5¼×6
I need method
And answer should be 31½
Answer:
express as a mixed fraction 5¼×6
I need method
And answer should be 31½
*100 points* A circle has a diameter with endpoints (-7, -1) and (-5, -9).
What is the equation of the circle?
Diameter
√(-7+5)²+(-1+9)²√2²+8²√4+64√682√17Radius
2√17/2√17unitsNow
Centre
(h,k)
(-7-5/2,-1-9/2)(-12/2,-10/2)(-6,-5)Equation
(x-h)²+(y-k)²=r²(x+6)²+(y+5)²=(√17)²(x+6)²+(y+5)²=17Option A
Answer:
Step-by-step explanation:
Consider the end points (-7,-1) and (-5,-9)
The center is the mid point between these two points.
The value of center is,
(h,k) = ((-7-5)/2, (-1-9)/2)
(h,k) = (-12/2,-10/2)
(h,k) = (-6, -5)
If the center (h,k) = (-6, -5) and radius is r then the equation of the circle is,
Equation of Circle,
((x-h)^2)+((y-k)^2) = r^2
((x+6)^2)+(y+5)^2 = r^2
Hence, the answer is ((x+6)^2)+(y+5)^2 = r^2.
Find y. Give your answer in the simplest form.
Step-by-step explanation:
you use Sin60 to find y because Sin60=
[tex] \frac{y}{8} [/tex]
What is c value in the equation
Log 57.9/c=0.293
If a log has no base written, you should generally (in algebra classes) assume that the base is 10
we raise 10 to the power log 57.9/c = 57.9/c
and 10 to the power 0.293 = 1.9633602768
so 57.9/c = 1.96
c = 57.9 /1.96 = 29.5
(-2p+7) (4p - 3) please help
Answer:
Step-by-step explanation:
-8p^2 + 6p + 28p - 21
-8p^2 + 34p - 21
Answer:
-8p² + 34p - 21
Step-by-step explanation:
(-2p + 7)(4p-3)
= -2p*4p -2p*-3 + 7*4p + 7*-3
= -8p² + 6p + 28p - 21
= -8p² + 34p - 21
HELP PLEASE Can someone at lest help me with the 2nd question a) b) and c) PLEASE AND THANKYOU
Answer:
a
Step-by-step explanation:
I say you need to get mays age to even get lilacs age
Solve, using the substitution method.
x = 10
y = 2x – 6
(10, 14)
(10, 4)
(10, –4)
(10, –1)
Answer:
10/14
Step-by-step explanation:
substitute x in equation 2
y= 2(10) -6
y= 20 - 6
y= 14
substitute y in equation 2
14 = 2x - 6
-2x= -6-14
-2x= -20
divide both sides by -2
-20/-2
x= 10
y= 14, x= 10
A rectangle has a height of m+8m+8m, plus, 8 and a width of
2m^3+m^2+3m2m 3 +m 2 +3m2, m, cubed, plus, m, squared, plus, 3, m. Express the area of the entire rectangle.
Your answer should be a polynomial in standard form.
Answer:
it is 18
Step-by-step explanation:
NO LINKS!!!
14. Write the converse of each statement and then determine whether or not the converse is true.
Part A
Converse = "If corresponding angles are equal, then two lines are parallel"Result = TrueExplanation:
Refer to the converse of the corresponding angles theorem. The original version is stated as part A, and the converse is marked in bold above.
Conditional statements are of the form "if this, then that". Symbolically we can use the template "If P, then Q". The P and Q are placeholders for logical statements.
The converse of "if P, then Q" is "If Q, then P". We swap the positions of P and Q. Do not negate either piece.
========================================================
Part B
Converse = "If angle C is 70 degrees, then the sum of angles A and B is 110 degrees"Result = TrueExplanation:
Recall that for any triangle, the three interior or inside angles always add to 180 degrees. In short: A+B+C = 180. If C = 70, then A+B = 180-C leads to A+B = 180-70 and A+B = 110. This process can be reversed.
========================================================
Part C
Converse = "If two lines are not parallel, then alternate interior angles k and s are not equal"Result = TrueExplanation:
For more information, check out the converse of the alternate interior angles theorem. The regular version of the theorem is "If two lines are parallel, then the alternate interior angles are congruent".
The converse of this theorem flips things to say: "If alternate interior angles are congruent, then the lines are parallel".
========================================================
Part D
Converse = "If John loses his money, then he throws coins in the fountain"Result = FalseExplanation:
Throwing coins in a fountain is one way to lose money, but there are other ways. He could drop a coin somewhere, or leave the coin somewhere he forgot.
In other words, just because he lost his money does not mean he threw a coin in the fountain.
A geologist in South America discovers a bird skeleton that contains 43% of its original amount of C-14. K value
of C-14 is 0.0001
Find the age of the bird skeleton to the nearest year.
The age of the bird skeleton is 6539.
What is Exponent Function?An exponential function is a function of form f (x) = aˣ, where “x” is a variable and “a” is a constant which is called the base of the function and it should be greater than 0.
Here, N =[tex]N_{0}.e^{-0.0001t}[/tex]
= 52% N₀
[tex]e^{-0.0001t}[/tex] = 0.52
-0.0001 t = ln 0.52
t = -10000 ln 0.52
t = 6539
Thus, the age of the bird skeleton is 6539.
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Answer:
Step-by-step explanation:
The radius of a circle is 9 inches. What is the circle's circumference?
Use 3.14 for
Answer:
56.52
Step-by-step explanation:
The formula for circumference is C=2πr
So, C=2(3.14)(9)
C=56.52 answer
Each of the s swimmers on the relay team swam an equal number of the 8 laps in a race. Write an expression that shows how many laps each swimmer swam.
The number of laps that Swimmer A swam was 50 laps.
How to form mathematical expression from the given description?You can represent the unknown amounts by the use of variables. Follow whatever the description is and convert it one by one mathematically. For example if it is asked to increase some item by 4 , then you can add 4 in that item to increase it by 4. If something is for example, doubled, then you can multiply that thing by 2 and so on methods can be used to convert description to mathematical expressions.
Let we suppose that:
Swimmer A swam x laps
Swimmer B swam y laps.
Then, according to the given data, we have:
x + y = 175 laps
y = 25 + 2x
(25 more than twice of laps of A is the number of laps of B).
Thus, we get a system of two equations:
x + 25 + 2x = 175
3x + 25 = 175
3x = 175 - 25 = 150
x = 50
As x is the number of laps Swimmer A swam, thus, the number of laps that Swimmer A swam was 50 laps.
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A rocket is launched from the ground at an initial velocity of 39.2 meters per second. Which equation can be used to model the height of the rocket after t seconds?
s(t) = –4.9t2 + 39.2
s(t) = –4.9t2 + 39.2t
s(t) = –4.9t2 + 39.2t + 39.2
s(t) = –4.9t2 + 39.2t – 39.2
The quadratic equation that models the height of the rocket after t seconds is:
s(t) = -4.9t² + 39.2t.
What is the quadratic function for a projectile's height?Considering the height in meters, the equation is given by:
s(t) = -4.9t² + v(0)t + h(0)
In which:
v(0) is the initial velocity, in m/s.h(0) is the initial height, in m.In this problem, we have that v(0) = 39.2, h(0) = 0, hence the equation is:
s(t) = -4.9t² + 39.2t.
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Answer: B
Step-by-step explanation: on Edge (*^*)
X - 4.5y=20.5 - X + 4.7y= -21.5
The value of x and y is -0.0434 and -4.5652.
What is equation?equation, statement of equality between two expressions consisting of variables and/or numbers.
given:
x - 4.5y=20.5
x + 4.7y= -21.5
Solving above two equation we have:
20.5+4.5y=-21.5-4.7y
42= -9.2y
y= -42/9.2
y= -4.5652
x=-0.0434
Hence, the value of x and y is -0.0434 and -4.5652.
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Given that a = 10 cm and b = 13 cm, work out the height of the triangle.
The Pythagorean theorem is also known as the Pythagoras' theorem. The height of the triangle is 12cm.
What is Pythagoras theorem?The Pythagorean theorem, sometimes known as Pythagoras' theorem, is a basic relationship between the three sides of a right triangle in Euclidean geometry. The size of the square whose side is the hypotenuse is equal to the sum of the areas of the squares on the other two sides, according to this rule.
Given a=10cm and b=13cm, therefore, the height of the triangle can be found using the Pythagoras theorem, therefore,
AB² = AD² + BD²
13² = AD² + 5²
169 = AD² + 25
AD = 12cm
Hence, the height of the triangle is 12cm.
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Find the slope rise/run
Answer:
m = -1/3
Step-by-step explanation:
Find two points in order to calculate slope:
(0, 2) (3, 1)Slope (m) =
ΔY /ΔX= -1/ 3= -0.33333333333333
( ΔX = 3 – 0 = 3ΔY = 1 – 2 = -1 )Slope intercept:
y = -0.33333333333333x + 2
Answer:
Slope = - 1/3
Step-by-step explanation:
Choose the point on the right and move upwards. How many times did you move upwards until you were at the same level as the point on the left? You moved once, which means your rise is 1.
Now from the point where you are at now, move right or left depending on where the point is. In this case, it's on the left which means our run will be negative. Now move left until you reach that point on the left. How many times did you move left? You moved three times, which means your run is 3.
Rise/Run = -1/3
Slope = Rise/Run
Slope: - 1/3
hope this helps!! p.s. i really need brainliest :)
Select all of the true statements below.
• Circles always contain arcs.
• Line segments always contain lines.
• Lines always contain line segments.
• Angles always form perpendicular lines.
Answer:
Circles always contain arcs.Lines always contain line segments.What is the value of e^in7x?
1
7e
7x
7
Answer:
[tex]7x[/tex]
Step-by-step explanation:
[tex]\text{Let,}~~\\\\~~~~~~~y = e^{\ln 7x}\\\\\implies \ln y = \ln \left(e^{\ln 7x} \right)\\\\\implies \ln y = \ln (7x) \ln e\\\\\implies \ln y = \ln (7x)\\\\\implies y = 7x\\\\\implies e^{\ln 7x} = 7x[/tex]
Could someone Help it’s a new topic
Answer:
So to do this you need a protactor and measure it with it, then add the total
Step-by-step explanation:
A line that passes through the point (x,y) with a y-intercept of b and a slope of m can be represented by the equation y = mx + b.
Natasha drew a line on the coordinate plane that passes through the point (15,13) and has a y-intercept of -8. What is the slope, m, of the line?
A slope is also known as the gradient of a line. The slope of the line is 1.4.
What is Slope?A slope also known as the gradient of a line is a number that helps to know both the direction and the steepness of the line.
Natasha drew a line on the coordinate plane that passes through the point (15,13) and has a y-intercept of -8. Since the coordinate of a point on the line is known the value of the y-intercept is known, therefore, we can write,
13 = m15 - 8
13 + 8 = 15m
21 = 15m
m = 7/5 = 1.4
Hence, the slope of the line is 1.4.
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What is the area of this triangle?
Answer:
A = 26.35 mm²
Step-by-step explanation:
the area (A) of the triangle is calculated as
A = [tex]\frac{1}{2}[/tex] bh ( b is the base and h the perpendicular height )
here b = 8.5 and h = 6.2 , then
A = 0.5 × 8.5 × 6.2 = 26.35 mm²
Step-by-step explanation:
1/2 ×bh
1/2×8.5×6.2
=26.35mm
In ΔIJK, the measure of ∠K=90°, KJ = 11, IK = 60, and JI = 61. What is the value of the cosine of ∠J to the nearest hundredth?
The sine of ∠I is represented by the ratio 63:65
First, let's draw the triangle (see the picture below.)
We need to use it here.
What are trigonometric ratios?-sin = opposite/hypotenuse
-cos = adjacent/hypotenuse
-tan = opposite/adjacent.
Assuming that ∠I is Ф,
we can see that its opposite side is equal to 63 and the hypotenuse is 65. Therefore,
[tex]sin(I)=\frac{63}{65} \\\\sinI=75^0[/tex]
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Answer:
0.18
Step-by-step explanation:
It’s right bc I got it correct with that answer
According to the graph of the rational function y equals 2 over the quantity x squared minus 1 end quantity which of the following statements is/are true?
The function is odd.
The function is decreasing for all values in the domain.
There is a horizontal asymptote along the x-axis.
The given function y = 2(x² - 1) is decreasing for all values in the domain and it has a horizontal asymptote along the x-axis so options (B) and (C) will be correct.
What is a function?A certain kind of relationship called a function binds inputs to essentially one output.
The nature of the relationship between the variables that makes up a function, such as y = sinx and y = x +6, defines the function.
Given the function,
y = 2(x² - 1)
If we increase the value of x to positive then the denominator x² - 1 will go to increase and thus y will decrease.
If we increase the value of x in negative then denominator x² - 1 will go to increase and thus y will decrease.
Therefore it is decreasing for all values in the domain.
Now,
Lim at x tends to ∞ of function is 2/∞ = 0 so y = 0 means there is a horizontal asymptote along the x-axis.
Hence "The given function y = 2(x² - 1) is decreasing for all values in the domain and it has a horizontal asymptote along the x-axis".
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Maya runs 4.5
miles more than Remy every week. Maya runs 18.35
miles per week. Which equation can be used to find the distance Remy runs every week, x?
Answer:
Remy runs 13.75 Miles Per Week
Step-by-step explanation:
X=18.35 - 4.5
A line connecting the points (-3,0) and (x, -6)has slope -1. Determine x.
Answer:
x=3
Step-by-step explanation:
We can use the slope formula to help complete this question
m = (y2-y1)/(x2-x1)
-1 = ( -6-0)/(x- -3)
-1 = -6/ (x+3)
Multiply each side by (x+3)
-x-3 = -6
Add 3 to each side
-x -3+3 = -6+3
-x =-3
Multiply each side by -1
x = 3
Answer:
x = 3
Step-by-step explanation:
The given slope and point can be used to write the equation of the line using the point-slope form. To find x for a given y, we can solve that equation.
__
setupThe point-slope form of the equation for a line is ...
y -k = m(x -h) . . . . . . line with slope m through point (h, k)
For (h, k) = (-3, 0), and m = -1, the equation is ...
y -0 = -1(x -(-3))
y = -x -3
We want x when y = -6, so this becomes ...
-6 = -x -3
solutionAdding x+6 to both sides of the equation, we get ...
(x +6) -6 = -x -3 +(x +6)
x = 3 . . . . . . . simplify
The graphs of f(x) and g(x) are shown below:
If f(x) = (x + 7)2, which of the following is g(x), based on the translation?
Hint: How many units is g(x) shifting down of f(x)?
a
g(x) = (x + 9)2
b
g(x) = (x + 5)2
c
g(x) = (x + 7)2 + 2
d
g(x) = (x + 7)2 − 2
Answer:
d
Step-by-step explanation:
Comparing the graphs we understand :
⇒ g(x) is equal to f(x) when shifted down 2 units
===========================================================
Hence :
⇒ g(x) = f(x) - 2
⇒ g(x) = (x + 7)² - 2