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3 years ago

13

a girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sister

s are there in the family?

1 answer:

dimulka [17.4K]3 years ago

3 0

Answer:

4 brothers and 3 sisters

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 $1\dfrac{11}{12}$ .

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3 years ago

Write a multiplication equation using one whole number and one fraction that will have a product of 18/8

bezimeni [28]

You could use the solution of 9/4 times 2

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Na figura, r//s. O valor, em graus, de a+b é: a)180 b) 196 c) 216 d) 240

Nastasia [14]

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Y=x^2-3x-6<br><br>x+y=2<br><br><br>Help 50 Points!!! Show Work

Alborosie

X + y = 2 —> y = 2 - x
insert to first equation
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gayaneshka [121]

This is what I got:

60/50 = X/70
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