Answer:
99
Step-by-step explanation:
First you find the area of the big rectangle:
15x9=135
Then, you need to find the area for the smaller square:
6x6= 36 (because in a sqaure all sides are the same)
Finally, you have to subtract 135 from 36
135-36=99
So, your answer is 99
Answer:
Simplifying
1 + -10x = 81
Solving
1 + -10x = 81
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-1' to each side of the equation.
1 + -1 + -10x = 81 + -1
Combine like terms: 1 + -1 = 0
0 + -10x = 81 + -1
-10x = 81 + -1
Combine like terms: 81 + -1 = 80
-10x = 80
Divide each side by '-10'.
x = -8
Simplifying
x = -8
Step-by-step explanation:
Find a common denominator. The lowest one would come from you multiplying 2/5 by 4 on each side and 1/4 by 5 on each side. You are left with 8/20 and 5/20, added together would be 13/20.
Answer:
Step-by-step explanation:
r = Radius of semicircle = 
Area of semicircle is given by
The area of the semicircle is 
.
2x² + 5x + 2 = 9
2x² + 5x + 2 - 9 = 9 - 9
2x² + 5x - 7 = 0
x = <u>-5 +/- √(5² - 4(2)(-7))</u>
2(2)
x = <u>-5 +/- √(25 + 56)</u>
4
x = <u>-5 +/- √(81)
</u> 4<u>
</u>x = <u>-5 +/- 9
</u> 4
x = <u>-5 + 9</u> x = <u>-5 - 9</u>
4 4
x = <u>4</u> x = <u>-14</u>
4 4
x = 1 x = -3.5
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