Answer:
x = 56°
Step-by-step explanation:
because it was supposed to be
Answer:
x = -3
Step-by-step explanation:
-4x + 2(5x - 6) = -3x - 39
-<u>4x</u> + <u>10x</u> - 12 = -3x - 39
-4x + 10x = 6x
6x - 12 = -3x - 39
<u>+3x</u><u> _ </u><u>+3x </u>
9x - 12 = -39
<u> </u><u>+ 12</u><u> </u><u>+12</u>
<u></u>
![\frac{9x}{9} = \frac{-27}{9}](https://tex.z-dn.net/?f=%5Cfrac%7B9x%7D%7B9%7D%20%3D%20%5Cfrac%7B-27%7D%7B9%7D)
x = -3
-30 = -30
Answer:
The answer is 9
6×9=54
3×9=27
Step-by-step explanation:
Answer:
2
Step-by-step explanation:
there is 2: 3<u> 1 </u>
4
Answer:
Part a) The draw in the attached figure
Part b) The length of the playground is
and the width of the playground is ![17\ yd](https://tex.z-dn.net/?f=17%5C%20yd)
Step-by-step explanation:
I assume that the playground has a rectangular form
Let
x-----> the length of the playground
y ----> the width of the playground
we know that
The area of the playground is equal to
![A=xy](https://tex.z-dn.net/?f=A%3Dxy)
![A=238\ yd^{2}](https://tex.z-dn.net/?f=A%3D238%5C%20yd%5E%7B2%7D)
so
-----> equation A
-----> equation B
substitute equation B in equation A
![238=x(x+3)](https://tex.z-dn.net/?f=238%3Dx%28x%2B3%29)
![x^{2} +3x=238](https://tex.z-dn.net/?f=x%5E%7B2%7D%20%2B3x%3D238)
![x^{2} +3x-238=0](https://tex.z-dn.net/?f=x%5E%7B2%7D%20%2B3x-238%3D0)
using a graphing calculator ------> solve the quadratic equation
The solution is
![x=14\ yd](https://tex.z-dn.net/?f=x%3D14%5C%20yd)
Find the value of y
therefore
The draw in the attached figure
The length of the playground is ![14\ yd](https://tex.z-dn.net/?f=14%5C%20yd)
The width of the playground is ![17\ yd](https://tex.z-dn.net/?f=17%5C%20yd)