Answer:
Pies=$0.85
Donuts= $1.20
Step-by-step explanation:
In the equation let p stand for the number of pies and d stand for the number of donuts.
To solve this set up 2 equations, one representing bill and the other representing Mary Ann.
- Bill's equation is 5p+7d=$12.65.
- Mary Ann's equation is 6p+6d=$12.30
Then solve using a system of equations. Systems of equations can be solved using elimination or substitution. I will use substitution. Solve bill's equation for p. This gives you
. Then, you can substitute that into Mary Ann's equation. This looks like
. Solve for d. Once you solve d=1.20. Finally, substitute 1.20 back into either Bill's or Mary Ann's for d and solve for p. No matter which equation you use p=0.85.
The simplified expression of axaxbxb is a^2b^2
<h3>How to simplify the expression?</h3>
The expression is given as;
axaxbxb
Rewrite properly as:
a * a * b * b
Evaluate the product
a^2b^2
Hence, the simplified expression of axaxbxb is a^2b^2
Read more about expressions at:
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Answer:
b. 20 m
Step-by-step explanation:
Let A represent the area
Let d represent the diagonal
then
![A=\frac{d*d}{2} = \frac{d^{2} }{2}](https://tex.z-dn.net/?f=A%3D%5Cfrac%7Bd%2Ad%7D%7B2%7D%20%3D%20%5Cfrac%7Bd%5E%7B2%7D%20%7D%7B2%7D)
Then
d² = 2A
then
![d = \sqrt{2A} =\sqrt{2*200} =\sqrt{400} = 20](https://tex.z-dn.net/?f=d%20%3D%20%5Csqrt%7B2A%7D%20%3D%5Csqrt%7B2%2A200%7D%20%3D%5Csqrt%7B400%7D%20%3D%2020)