Answer:
x=8
Step-by-step explanation:
30-5x-10
-5x+30-10
-5x+40
-5x= -40
divide both sides by -5
-5x/-5= -40/-5
x=8
Answer:
810
Step-by-step explanation:
9 x 10 = 90
9 x 90= 810
<u><em>PLZ MARK BRAINLIEST!</em></u>
The choices are not attached but we can solve the problem from the given information
Answer:
The expression can be used to find h is
The height of the cone is
cm
Step-by-step explanation:
The formula of the volume of the cone is V =
π r² h, where
- r is the radius of its base
- h is the height of it
Let us find the height of the cone from the formula of its volume
∵ V =
π r² h
- Multiply both sides by 3
∴ 3 V = π r² h
- Divide both sides by π r²
∴ ![\frac{3V}{\pi r^{2}}=h](https://tex.z-dn.net/?f=%5Cfrac%7B3V%7D%7B%5Cpi%20r%5E%7B2%7D%7D%3Dh)
- Switch the two sides
∴
The expression can be used to find h is
∵ The radius of the cone is 7 cm
∴ r = 7
∵ The volume of the cone is 147 cm³
∴ V = 147
- Substitute them in the expression of the height to find it
∵ ![h=\frac{3(147)}{\pi (7)^{2}}](https://tex.z-dn.net/?f=h%3D%5Cfrac%7B3%28147%29%7D%7B%5Cpi%20%287%29%5E%7B2%7D%7D)
∴ h =
cm
The height of the cone is
cm
Answer:
5
Step-by-step explanation:
If for without a doubt, 19.2% of the mixture is acid then all you have to do is
376 * 0.192 and that gets you 72.192 ml or in this case 72.2 ml