What are the questions on 7 and 8?
I don't really speak Spanish but I'll guess that says
How do I solve y = 1 - 2.5
Unless I'm missing something, there's not even any algebra here.
The way we subtract a bigger number from a smaller number is first we subtract the smaller number from the bigger number the regular way, then we prepend a minus sign.
y = 1 - 2.5 = -(2.5 - 1) = -1.5
Step-by-step explanation:
First, the pizza is 18 inches in diameter, so
![d = 18](https://tex.z-dn.net/?f=d%20%3D%2018)
and, because the radium is half of the diameter,
![r = 9](https://tex.z-dn.net/?f=r%20%3D%209)
<u>Note that the units are inches.</u>
Using the equation
![a = \pi r ^{2}](https://tex.z-dn.net/?f=a%20%3D%20%5Cpi%20%20r%20%5E%7B2%7D%20)
where a is the area of a circle, we know that the area of the whole pizza is approx.254.5 square inches. Divide by 8 to find the area of 1/8 of a pizza. Each slice will have an area of approx. 32 square inches. For a precise result, the answer is
![a(s)= \frac{(\pi \times 9^{2})}{s}](https://tex.z-dn.net/?f=a%28s%29%3D%20%20%5Cfrac%7B%28%5Cpi%20%20%5Ctimes%209%5E%7B2%7D%29%7D%7Bs%7D%20)
where a(s) is the area of a slice of pizza, and s is the total number of slices, given they are equal in size.
Answer:
A. 3
Step-by-step explanation:
![\frac{21}{7}](https://tex.z-dn.net/?f=%5Cfrac%7B21%7D%7B7%7D)
REMEMBER to MULTIPLY FIRST!!
21 / 7 = 3
Answer:
yes 30 is the answer
Step-by-step explanation: