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3 years ago

What is 4x2 I need help

Mathematics

1 answer:

valentinak56 [21]3 years ago

4 0

Answer:

8??

Step-by-step explanation:

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I thought of a number, I added 1 3 4 to it, then I multiplied the result by 2 2 11 and I got 8. What was my number?

Valentin [98]

Given:

In a number, adding $1\dfrac{3}{4}$ , then multiplying the result by $2\dfrac{2}{11}$ we get 8.

To find:

The unknown number.

Solution:

Let the unknown number be x.

According to the question,

$(x+1\dfrac{3}{4})\times 2\dfrac{2}{11}=8$

$(x+\dfrac{1\times 4+3}{4})\times \dfrac{2\times 11+2}{11}=8$

$(x+\dfrac{4+3}{4})\times \dfrac{22+2}{11}=8$

$(x+\dfrac{7}{4})\times \dfrac{24}{11}=8$

Multiply both sides by $\dfrac{11}{24}$ .

$x+\dfrac{7}{4}=8\times \dfrac{11}{24}$

$x+\dfrac{7}{4}=\dfrac{11}{3}$

Subtract $\dfrac{7}{4}$ from both sides.

$x=\dfrac{11}{3}-\dfrac{7}{4}$

$x=\dfrac{44-21}{12}$

$x=\dfrac{23}{12}$

$x=1\dfrac{11}{12}$

Therefore, the required number is $1\dfrac{11}{12}$ .

3 0

3 years ago

dybincka [34]

Answer:

Step-by-step explanation:

both 4 and -4 are 4 units away from 0

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What is 6.30 rounded to the nearest tenth?

Lady_Fox [76]

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Distribute. 5(b - 1)

pshichka [43]

Answer:

5b-5

Step-by-step explanation:

5(b - 1)

5(b) 5(-1)

5b-5

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3 years ago

Urgent!! Math help!!!

andriy [413]

Answer:

Step-by-step explanation:

15*15+8*8=289

$\sqrt{289}$ = 17

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