Answer:
30%
Step-by-step explanation:
Method 1-
Divide 9 by 9/30. You get 30. This is the percent that you need!
Method 2-
You can also simplify 9/30 down to 3/10. You just multiply this by 10 on both sides. This makes 30/100, or 30%
Hello,
We know that if we make the same operation on both sides, we don't affect the equation:
For example:

Do you see? we add 2 on both sides and we don't affect the equality
We can do the same with the multiplication, for example
4=4 (i'll multiply both sides by 1/2)

Now, we do exactly the same in your excercise:
Answer:
In an isosceles right triangle, the equal sides make the right angle. ... Therefore each of those acute angles is 45°.
Step-by-step explanation:
Answer:
The number is 2
Step-by-step explanation:
Twice a number (z) = 2*z = 2z
Twice a number (z) added to 21 = 2z + 21
9 times the number added to 7 = 9z + 7
9z + 7 = 2z + 21
Subtract 2z form both sides
9z - 2z + 7 = 21
7z + 7 = 21
Subtract 7 from both sides
7z = 21 - 7
7z = 14
Divide both sides by 7
z = 14/7
z = 2
Answer:
452.39 feet³
Step-by-step explanation:
In the attached file