Step-by-step explanation:
8x-37-6x=15
2x=15+37
2x=52divide both sides by 2
x=26
11. If a square has an area of 121 square meters, what is the side length? A. 60.5 m B. 12 m C. 11 m D. 484 m
Answc
Step-by-step explanation:
answer= C. 11m
The school needs to buy new computers for four classrooms. If the school needs 20 new computers in each classroom, how many computers does it need to buy in total? Explain
Answer:
80 computers
Step-by-step explanation:
For 1 class=20 computers
For 4 classes=20x4=80 computers
235 people are at RSM summer camp. There are 35 more boys than girls, and 70 fewer adults than girls. How many people of each group are at the camp?
Answer:
The number of girls are 90 girls
The number of boys are 125 boys
The number of adults are 20 adults
There are 90 girls, 125 boys and 20 adults at the camp
Step-by-step explanation:
The total number of people is given as 235 people
The number of boys = 35 + The number of girls
The number of adults = The number of girls - 70
Let the total number of girls = G
Therefore, we have;
The number of boys = 35 + G
The number of adults = G - 70
The total number of persons = The number of boys + The number of adults + The number of girls
Therefore;
235 = The number of boys + The number of adults + The number of girls
Which gives;
235 = 35 + G + G - 70 + G = 3·G - 35
235 = 3·G - 35
3·G - 35 = 235
3·G = 235 + 35 = 270
G = 270/3 = 90
The number of girls = 90
The number of boys = 35 + The number of girls = 35 + 90 = 125
The number of boys = 125
The number of adults = The number of girls - 70 = 90 - 70 = 20
The number of adults = 20.
Answer:
There are 90 girls, 125 boys, and 20 adults.
Step-by-step explanation:
Let x be the number of girls. How many boys were there?
x + 35
How many adults were there?
x - 70
We know that 235 people are at RSM summer camp. Use this to make an equation.
x + (x + 35) + (x - 70) = 235
x + x + 35 + x - 70 = 235
3x - 35 = 235
3x - 35 + 35 = 235 + 35
3x = 270
3x ÷ 3 = 270 ÷ 3
x = 90
x, x + 35, x - 70
90, 125, 20
solve for x
x/3 + 14 = 35
Can you help?
Answer:
X=63
Step-by-step explanation:
Im pretty sure at least
ILL GIVE YOU BRAINLIST !!
Flying L helicopter was flying 400 feet above sea level, then descended 100 feet to
avoid bad weather. When the clouds cleared, it ascended 200 feet. Write an expression, then determine the integer that represents Flying L's elevation now.
Answer:
500ft
Step-by-step explanation:
Elevation = 400ft-100ft+200ft
Elevation = 500ft
If you need an expression with only variables, set 400, 100, 200, and elevation as separate variables
Please helppppp!!!!!!!
Answer:
K 2
J 4
Step-by-step explanation:
Solved it as an equation 2 x+x=6
x= number of miles Katie drives
what is equalvent to neagative -8
Solve the equation for the indicated variable. A=r+rvf, for v
Answera=frv+r
Step-by-step explanationa=r+rvf
To solve for a variable in an equation means that we change the subject of the formula. The solution to the equation for variable v is:
[tex]\frac{A - r}{rf} = v[/tex]
Given that:
[tex]A = r + rvf[/tex]
Subtract r from both sides
[tex]A - r = rvf[/tex]
Divide both sides by rf
[tex]\frac{A - r}{rf} = v[/tex]
Rewrite as:
[tex]v=\frac{A - r}{rf}[/tex]
Hence, the solution to the equation for variable v is:
[tex]\frac{A - r}{rf} = v[/tex]
Read more about subject of the formula at:
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Solve for x
-2x + 7 = 25
Answer:
-9
Step-by-step explanation:
Step 1:
-2x + 7 = 25
Step 2:
-2x = 18
Step 3:
-18 = 2x
Answer:
-9
Hope This Helps :)
Answer: -9
Step-by-step explanation: hope this helped ❤️
6x−3(6−5x)+3x=10−4(2−x)
Answer:
x =1
Step-by-step explanation:
[tex]6x-3\left(6-5x\right)+3x=10-4\left(2-x\right)\\\\Group\:like\terms\\6x+3x-3\left(-5x+6\right)=10-4\left(2-x\right)\\\\Add\:similar\:elements:\:6x+3x=9x\\9x-3\left(-5x+6\right)=10-4\left(2-x\right)\\\\Expand\:-3\left(-5x+6\right):\quad 15x-18\\9x+15x-18=10-4\left(2-x\right)\\\\\mathrm{Add\:similar\:elements:}\:9x+15x=24x\\24x-18=10-4\left(2-x\right)\\\\Expand\:10-4(2-x):4x+2\\24x-18=4x+2\\\\Add\:18\:to\:both\:sides\\24x-18+18=4x+2+18\\\\Simplify\\24x=4x+20\\[/tex]
[tex]\mathrm{Subtract\:}4x\mathrm{\:from\:both\:sides}\\24x-4x=4x+20-4x\\\\Simplify\\20x=20\\\\\mathrm{Divide\:both\:sides\:by\:}20\\\frac{20x}{20}=\frac{20}{20}\\\\Simplify\\x=1[/tex]
Warehouse Club Membership If the annual fee for a warehouse club membership is $100 and the reward rate is 2% on club purchases for the year, then the linear equation y = 100 - 0.02x models the actual annual cost of the membership y, in dollars. Here x represents the annual amount of club purchases, also in dollars. (a) Determine the actual annual cost of the membership if club purchases for the year are $2400 (b) What amount of club purchases would reduce the actual annual cost of the mem bership to $50? ) How much would a member have to spend in annual club purchases to reduce the annual membership cost to $0?
Answer:
(a) $52
(b) $2500
(c) $5000
Step-by-step explanation:
(a) y = 100 - 0.02x
x = 2400
y = 100 - 0.02(2400)
y = 100 - 48
y = 52
$52
(b) 50 = 100 - 0.02x
-50 = -0.02x
x = 2500
$2500
(c) 0 = 100 - 0.02x
0.02x = 100
x = 5000
$5000
At a grocery store, almonds are on sale for $3.78 per pound. What is the price of 4.5 pounds? Please show explanation
Answer:
17.01 pounds
Step-by-step explanation:
3.78 x 4.5 = 17.01
Hope this helps!
(3 x 10) x 8 = x(10 x 8)
Answer:
Here you go
Step-by-step explanation:
(3 x 10) x 8 = x(10 x 8)
What you do the distributive property so multiply 3x10 and you get 30 and multiply by 8 you get 240 so one side is solved. Now multiply 10x8 you get 80 and remember to multiply the variable x so you get 80x=240 now divide 80 both sides and you will get 3 as your total answer
Answer:
3
Step-by-step explanation:
(3x10)=30
30x8=240
(10x8)=80
240/80=3
is each number correctly expressed in scientific notation? Choose yes or no
Select the correct answer from each drop-down menu. Ashton works as a marketing manager for a consumer products firm. His total earnings, A, in x months is given by the function A(x) = 2,400x + 40x2. His total savings, S, in x months is given by the function S(x) = 250x + 500. The function E(x) = represents Ashton’s total expenses in x months. Ashton’s expenses for 3 years total $
Answer:
E(x) = 40x² + 2150x - 500E(36) = $128740Step-by-step explanation:
Earnings = A(x)Savings = S(x)Expenses = E(x)Savings = Earnings - Expenses ⇒ Expenses = Earnings - Savings
E(x) = A(x) - S(x)E(x) = 2400x + 40x² - (250x + 500) E(x) = 2400x + 40x² - 250x - 500 E(x) = 40x² + 2150x - 500E(3 years) = E(36 months)
E(36) = 40*36² + 2150*36 - 500= $128740Compare the three data sets on the right.
(a) Which data set has the greatest sample standard deviation?
Which data set has the least sample standard deviation?
(b) How are the data sets the same? How do they differ?
Answer:A just took the test and got a 100
a) The graph II will tell the greatest sample standard deviation.
and, the least sample standard deviation is given by Graph III.
b) The three data sets have same mean, median and mode but different
standard deviation.
what is Standard Deviation?The term "standard deviation" (or "[tex]\sigma[/tex]") refers to a measurement of the data's dispersion from the mean. A low standard deviation implies that the data are grouped around the mean, whereas a large standard deviation shows that the data are more dispersed.
Given:
From the Graph we can say the the dispersion of data from the mean tells about the Standard deviation.
Then, the graph II will tell the greatest sample standard deviation.
and, the least sample standard deviation is given by Graph III.
b) The data sets have same mean but different standard deviation.
So, The three data sets have same mean, median and mode but different
standard deviation.
Learn more about Standard Deviation here:
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On a recent quiz, the class mean was 70 with a standard deviation of 2.1. Calculate the z-score (to 4 decimal places) for a person who received score of 76.
10 times 10 times 10 times 10 times 10
Answer:
100000Step-by-step explanation:
10x10x10x10x10=100000
Answer:
100,000
Step-by-step explanation:
1.10 times 10=100
2.10 times 10 again
3.multiply 100 times 100
4.get 100,00
Please solve 2x+6 > 20
Answer:
See below.
Step-by-step explanation:
So we have the inequality:
[tex]2x+6>20[/tex]
Subtract 6 from both sides:
[tex]2x>14[/tex]
Divide both sides by 2:
[tex]x>7[/tex]
So, the solution is all numbers greater than 7.
And we're done!
If and are equivalent, what is the value of x?
Answer:
is the value of x. Step-by-step explanation: We have been given the two terms which are equivalent means they have equal value: and . So, by the given information: we have to solve for x: Firstly, we will cross multiply so, we will get: After simplification we will get the final result is the value of x.
Step-by-step explanation:
Need some help on this question Select the polynomial that is divisible by (x-1).
Answer:
A
Step-by-step explanation:
p(x)=5x^3−4x^2−x
Under normal conditions, 1.5 feet of snow will melt into 2 inches of water. After a recent snowstorm, there were 4 feet of snow. How many inches of water will there be when the snow melts?
Answer:
The answer im pretty sure is 5.33 inches of water.
Step-by-step explanation:
Plz help 7th grade math
PLEASE HELP 15 POINTS!!!!!! What is the value of x?
Answer:
128 degrees
Step-by-step explanation:
Remember : Sum of all angles in a hexagon is 720°!
Thus,
128° + 100° + 120° + X + 112° + 133° =720°
=> 593 + X = 720
=> X = 127°in which does -5/8 belong in
Answer:
It is a rational number, an integer, and a negative number.
A refrigerator is priced at $525.50. There is a 6% sales tax rate. What is the sales tax for the refrigerator in dollars and cents?
Be sure to use the correct place value.
Answer:
Sales tax=$31.53
The total price is: $557.03
Step-by-step explanation:
$525.50*0.06=$31.53
In which number 2 worth one-tenth as much as it is in the number 378,215 A.439,592 B.657,423 C.872,551 D.939,264
Answer:
i would say b since its 1 placement lower
Step-by-step explanation:
If the Perimeter of the triangle 15 centimeters, what is the value of n
Answer:
Step-by-step explanation:
n+2n+1+5n-6=15
= 8n + 1 - 6= 15
= 8n + 1 - 6 + 6 = 15 + 6
= 8n +1 = 21
= 8n + 1 - 1 = 21 - 1
=8n = 20
= 8n / 8 = 20 / 8
= n = 2.5
the value of ‘n’ is 2.5
The value of n in the triangle is 2.5
How to determine the value of n?The perimeter of the triangle is the sum of its side lengths.
So, we have:
P = n + 2n + 1 + 5n - 6
Evaluate the like terms
P = 8n - 5
The perimeter is 15.
So, we have:
8n - 5 = 15
Add 5 to both sides
8n = 20
Divide by 8
n = 2.5
Hence, the value of n is 2.5
Read more about perimeter at:
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Suppose there are two scale drawings of the same house. One uses the scale of 1 cm to 2 m, and the other uses the scale 1 cm to 4 m. Which drawing is larger?
Answer:
it's 1 cm to 2 m
Step-by-step explanation:
Sometimes two different scales are actually equivalent, such as 5 cm to 10 m and 1 cm to 2 m. It is common to write a scale so that it tells you what one unit on the scale drawing represents (for example, 1 cm to 2 m).
simplify 5(x – 2) + 11
Answer:
1/5
Step-by-step explanation:
Step 1:
5x - 10 + 11
Step 2:
5x = 1
Answer:
x = 1/5
Hope This Helps :)