Answer:
20
Step-by-step explanation:
30 which is the average to get =30+36+28+16+50+x
which is
30=30+36+28+16+50+x
after the addition divide it by the total points which is 6.
then you cross multiply which will be
30÷1=160+x÷6
which will be
160+x=180
x=180-160
x=20
The LCM is 210
70×2=210
14×15=210
30×7=210
Answer:
x = ±8
Step-by-step explanation:
X^2- 64
Set this equal to 0
x^2 -64 =0
Add 64 to each side
x^2-64+64 = 64+64
x^2 = 64
Take the square root on each side
x = ±sqrt(64)
x = ±8
Answer:
![x=4/55\\y=-69/55](https://tex.z-dn.net/?f=x%3D4%2F55%5C%5Cy%3D-69%2F55)
Step-by-step explanation:
<h2>
![4x+9y-9y=-11-9y\\4x=-9y-11\\](https://tex.z-dn.net/?f=4x%2B9y-9y%3D-11-9y%5C%5C4x%3D-9y-11%5C%5C)
</h2><h3>
![x=\frac{-9y-11}{4}\\-3(\frac{-9y-11}{4})+7y=-9](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B-9y-11%7D%7B4%7D%5C%5C-3%28%5Cfrac%7B-9y-11%7D%7B4%7D%29%2B7y%3D-9)
</h3>
![\frac{55}{4} y=\frac{-69}{4}](https://tex.z-dn.net/?f=%5Cfrac%7B55%7D%7B4%7D%20y%3D%5Cfrac%7B-69%7D%7B4%7D)
![y=\frac{-69}{55}](https://tex.z-dn.net/?f=y%3D%5Cfrac%7B-69%7D%7B55%7D)
![x=\frac{-9(-69/55)-11}{4}\\x=\frac{4}{55}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B-9%28-69%2F55%29-11%7D%7B4%7D%5C%5Cx%3D%5Cfrac%7B4%7D%7B55%7D)
Answer:
(x+6)(x+3)
Step-by-step explanation:
The factors of 18 that sum to 9 are 6 and 3, so:
(x+6)(x+3)