Let's write down what you said:

you double a number
2x

and then add 20,

2x+20

you get 4/7 of the original number.

2x+20=4/7x.

we can get rid of the fractionby multiplying everything by 7:

14x+140=4x

and subtract 4x from both sides:

10x+140=0

move 120 to the other side:

10x=-140

and divide by 10

x=-14

and that's the answer!

4 0

3 years ago

Please help I'm begging

Elina [12.6K]

The figure is made up of a cone and a cylinder.

Diameter = 16 ft
radius = 16÷2 = 8ft

Volume of the cone = 1/3bh
Volume of the cone = $\frac{1}{3} \pi r^{2} h$
Volume of the cone = $\frac{1}{3} \pi 8^{2}(6)$ = 402.12

Volume of the cyclinder = bh
Volume of the cylinder = $\ \pi r^{2} h$
Volume of the cylinder = $\ \pi 8^{2}(4)$ = 1206.37

Total = 402.12 + 1206.37 = 1608.49 cubic feet

6 0

3 years ago

What is the value of 5w if w=6

schepotkina [342]

Answer:

Step-by-step explanation:

5 x 6

4 0

3 years ago