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laila [671]
3 years ago
15

Solve for a. 7a + 18 = 102

Mathematics
2 answers:
Oliga [24]3 years ago
6 0

Answer:

a=12

Step-by-step explanation:

7a+18=102

7a=102-18

7a=84

a=84/7

a=12 <----- answer

timurjin [86]3 years ago
4 0

Answer:

7a + 18 = 102

     - 18  - 18

7a = 84

<em>a = 12</em>

<em></em>

a = 12 is the answer.

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3 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
A cylinder has a diameter of 6 feet. the volume of the cylinder is 36/5π cubic feet.
Anton [14]

Answer:

Height of cylinder is \frac{4}{5}\ ft.

Step-by-step explanation:

Diameter of cylinder, D = 6 feet

Relation between Radius, R and diameter, D is given by:

R = \dfrac{D}{2}

So, radius, R = \frac{6}{2} \Rightarrow 3 feet

Let height of cylinder be h feet.

Formula for volume of cylinder is given by:

V = \pi R^{2} H

Where, R is the radius of base of cylinder

and H is the height of cylinder

We are given that,

V = \dfrac{36 \pi}{5} ft^{3}

Using formula for volume, V = \pi R^{2} H

\dfrac{36\pi}{5} = \pi \times 3^{2} \times h\\\Rightarrow \dfrac{36\pi}{5} = \pi \times 9 \times h\\\Rightarrow h = \dfrac{4}{5} ft

Hence, Height of cylinder is \frac{4}{5}\ ft.

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