Answer:

Step-by-step explanation:
Distribute the 4

Subtract the 7

Subtract y and add 1
12) the radius is 15 so with the equation (3.14)*r^2, we get (3.14)(15^2)=706.5
13) true, true (if x=4), true
14) y=0.75x+4.50, $8.25
Answer:
Step-by-step explanation:
Going down by each column it would be 7,17,24
The next column 12,13,25
Next column 19,30,49
Answer:
8.94 m
Step-by-step explanation:
Use the Pythagorean Theorum -
. Use leg 1 as <em>a</em>, leg 2 as <em>b</em>, and the third side as <em>c</em>.
We know leg 1 is 4, and that leg 2 is twice as long as leg 1...

Now, we use the Order of Operations to find
...

Now, we find the square root of
to find c...

So, the length of the third side is 8.94 m.
Answer:
Your answer should be $29.40
Step-by-step explanation:
If you divide 21 by 5 you get 4.2, so each book costs $4.20.
4.2 x 7 = 29.4
Therefore, your total cost for 7 books will be $29.40
I hope this helps!