Answer:
W can be 3, 4, and 5
Step-by-step explanation:
If it is less than 18 and higher than 6 then I think those, 3 times 3, 4, and 5, would be in between your range.
Correct Answers:
0.25x²+0.8x-8=0
5x²+7x=15
Reasons: 0.25x²+0.8x-8=0 is already in standard quadratic form, so you can just use the numbers in the quadratic formula.
5x²+7x=15 is also in standard form; all you have to do is change it from the original equation to proper standard form by moving the 15 to the other side. Thus, that equation is changed to 5x²+7x-15=0. I hope this helps you. ☺
4/5 + 8/9. First we have to find a common denominator for
![\frac{4}{5}](https://tex.z-dn.net/?f=%20%5Cfrac%7B4%7D%7B5%7D)
and
![\frac{8}{9}](https://tex.z-dn.net/?f=%20%5Cfrac%7B8%7D%7B9%7D)
.
![\\ \frac{4*9}{5*9}= \frac{36}{45} \ and \ \frac{8*5}{9*5}= \frac{40}{45} \\](https://tex.z-dn.net/?f=%20%5C%5C%20%20%5Cfrac%7B4%2A9%7D%7B5%2A9%7D%3D%20%5Cfrac%7B36%7D%7B45%7D%20%5C%20and%20%5C%20%20%5Cfrac%7B8%2A5%7D%7B9%2A5%7D%3D%20%5Cfrac%7B40%7D%7B45%7D%20%5C%5C%20)
Now we are going to add:
![\frac{36}{45}+ \frac{40}{45}= \frac{76}{45}](https://tex.z-dn.net/?f=%20%5Cfrac%7B36%7D%7B45%7D%2B%20%5Cfrac%7B40%7D%7B45%7D%3D%20%5Cfrac%7B76%7D%7B45%7D%20)
Make
![\frac{76}{45}](https://tex.z-dn.net/?f=%20%5Cfrac%7B76%7D%7B45%7D)
a mixed number:
![\frac{76}{45}=1 \frac{31}{45}](https://tex.z-dn.net/?f=%20%5Cfrac%7B76%7D%7B45%7D%3D1%20%5Cfrac%7B31%7D%7B45%7D)
So the answer is
Answer:
7÷72
Step-by-step explanation:
First take lcm of the denominator
Then solve
(13*4-5*9)/73
52-45/72
7/72