2 years ago

4x-20 + x = 180 what is this answer

Mathematics

2 answers:

Naya [18.7K]2 years ago

6 0

Answer:

Step-by-step explanation:

Step 1:

4x - 20 + x = 180

Step 2:

5x - 20 = 180

Step 3:

5x = 180 + 20

Step 4:

5x = 200

Answer:

x = 40

Hope This Helps :)

AlekseyPX2 years ago

3 0

Answer:

x=40

Step-by-step explanation:

4x-20+x=180

5x-20=180

5x=200

x=200/5

x=40

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Make r the subject of the formula <br>v = \pi \: h {}^{2}(r - \frac{h}{3})v=πh2(r−3h) <br>

mel-nik [20]

Answer:

$\boxed{r = \frac{h}{3} + \frac{v}{\pi {h}^{2} } }$

Step-by-step explanation:

$Solve \: for \: r: \\ = > v= \pi {h}^{2}(r - \frac{h}{3} ) \\ \\ v=\pi {h}^{2}(r - \frac{h}{3} )is \: equivalent \: to \: {h}^{2}\pi(r - \frac{h}{3} ) = v: \\ = > {h}^{2}\pi(r - \frac{h}{3} ) = v \\ \\ Divide \: both \: sides \: by \: \pi {h}^{2} : \\ = > r - \frac{h}{3} = \frac{v}{\pi {h}^{2} } \\ \\ Add \: \frac{h}{3} \: to \: both \: sides: \\ = > r = \frac{h}{3} + \frac{v}{\pi {h}^{2} }$