Answer:
Yes
Step-by-step explanation:
Circumference formula is C=2 pi r, if you divide the pizza by 2 to get the radius,5, then input it into the formula to get 31.41592654, and since this number is smaller than 32 it will fit. If 10 is the radius it will not fit.
You will have to take 3x common from both terms and your ans should look like this,
3x(9x^2-4)
Answer:
16
Step-by-step explanation:
let the number be x , then
x = 15 ( multiply both sides by 4 to clear the fraction )
3x = 60 ( divide both sides by 3 )
x = 20 , then
× 20 = 4 × 4 = 16
The students rented 4 small cars and 8 large cars.
Step-by-step explanation:
Given,
Number of people in small car = 4
Number of people in large car = 7
Total people in both type of cars = 72
Let,
x represent the number of small cars rented.
y represent the number of large cars rented.
According to given statement;
4x+7y=72 Eqn 1
y = 2x Eqn 2
Putting value of y from Eqn 2 in Eqn 1
![4x+7(2x)=72\\4x+14x=72\\18x=72](https://tex.z-dn.net/?f=4x%2B7%282x%29%3D72%5C%5C4x%2B14x%3D72%5C%5C18x%3D72)
Dividing both sides by 18
![\frac{18x}{18}=\frac{72}{18}\\x=4](https://tex.z-dn.net/?f=%5Cfrac%7B18x%7D%7B18%7D%3D%5Cfrac%7B72%7D%7B18%7D%5C%5Cx%3D4)
Putting x=4 in Eqn 2
![y=2(4)\\y=8](https://tex.z-dn.net/?f=y%3D2%284%29%5C%5Cy%3D8)
The students rented 4 small cars and 8 large cars.
Keywords: linear equation, substitution method
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I am not sure about this but here goes nothing: d=2.5t+2.2 is very familiar to y=mx+b y=d m=2.5 x=t b=2.2 to find a new quasion we substitute d and t into place wich equals 1=2.5(0)+b simplification and you get b=1 so your answer is d=2.5t+1