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OverLord2011 [107]
3 years ago
11

Solve the question: 4/5 (b-1)-1/b=1

Mathematics
1 answer:
soldi70 [24.7K]3 years ago
4 0

Answer:

We know that (4/5b - 4/5 - 1) / b = 1

Which means that b = 4/5b - 4/5 - 1

So we put variable on one side and numbers on the other side

So 1/5b = - 9/5

So b = - 9

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Find the volume of a cylinder with height 14.7 cm and diameter 10.5 cm.
velikii [3]

Hello!

The volume of a cylinder is found by using the formula: V = πr²h.

The problem has given us the height of the cylinder, which is 14.7 centimeters, and the diameter which is 10.5 centimeters. The volume of a cylinder requires the radius, so therefore, to find the radius, divide the diameter by half, and that will give the radius.

R = 10.5 / 2

R = 5.25 centimeters

With that radius and the height, we can find the volume of the cylinder.

V = π(5.25)²(14.7)

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Therefore, the volume of this cylinder is 1272.88 centimeters³.

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6. Find the values for each of the following: a. 3 times 5 in Z1o b. 3 times 5 in Zs c. 3 times 5 in Z3 e. 5 3 in Z1o
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Answer:  The calculations are done below.

Step-by-step explanation:  We are given to find the values for each of the following :

(A) 3 times 5 in \mathbb{Z}_{10}.

We know that

\mathbb{Z}_{10}=\{0,1,2,3,4,5,6,7,8,9\}(\textup{mod}10).

Therefore, we get

3\times5=15(\textup{mod}10)=5.

(B) 3 times 5 in \mathbb{Z}_{5}.

We know that

\mathbb{Z}_{5}=\{0,1,2,3,4\}(\textup{mod}5).

Therefore, we get

3\times5=15(\textup{mod}5)=0.

(C) 3 times 5 in \mathbb{Z}_{3}.

We know that

\mathbb{Z}_{3}=\{0,1,2\}(\textup{mod}3).

Therefore, we get

3\times5=15(\textup{mod}3)=0.

(D) 5 times 3 in \mathbb{Z}_{10}.

We know that

\mathbb{Z}_{10}=\{0,1,2,3,4,5,6,7,8,9\}(\textup{mod}10).

Therefore, we get

5\times3=15(\textup{mod}10)=5.

Thus, the required values are evaluated.

8 0
3 years ago
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