b = -1-7ab=−1−7a
Can be rewritten to be easier to understand.

In addition you can say the following equation is valid due to the way your problem was given to you.

Of course, you can simplify equation 2

This ends up giving you b so you don't end up having to do any substitution in order to find b. Now substitute the value for b into either equation. I'm choosing the third because it's easiest.


And there you go :)
SA=pi r s+ pi r^2 , solve for s
SA-pi r^2=pi r s
(SA- pi r^2)/pi*r=s
can be written also
<u>SA</u> - r= s<u>
</u>pi*r<u>
</u>
Answer:
$642
Step-by-step explanation:
To calculate sales tax, you multiply the percentage by the price. In this case it would be 600 x 0.07 which is 42. Then you add them together which would be 600 plus 42 which equals 642.
The answer is (b) y = 3x + 1
Answer:itequalsjeh
Step-by-step explanation:
Ehhs