10 sides
360-72=288
288 divided by 2 is 144
Decagon have 144 degree interior angles
Answer:
Step-by-step explanation:
-5/3 + -5/4
-50/12 + -15/12 = -65/12 = -5 5/12
m = 5a
m + a = 30
Because we already know the value of m, we can find the value of a.
5a + a = 30
<em><u>Combine like terms.</u></em>
6a = 30
<em><u>Divide both sides by 6</u></em>
a = 5
Now that we know the value of a, we can find the true value of m.
m = 5a
m = 5 * 5
m = 25
Aisha is 5 years old, and Aisha's mother is 25 years old. (This is your answer.)
Find the Greatest Common Factor (GCF)
GCF = 7x
Factor out the GCF, (Write the GCF first, then in parenthesis, divide each term by the GCF.)
7x(56xy/7x + 7x/7x)
Simplify each term in parenthesis
<u>= -7x(8y + 1)</u>
