2 years ago

If 10% of a group of children are girls, what is the ratio of girls to boys

Mathematics

1 answer:

Ipatiy [6.2K]2 years ago

3 0

Answer:

9 boys to 1 girl

Step-by-step explanation:

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The variable is z

Step-by-step explanation:

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2 years ago

Find the distance around (perimeter) the figure on the left.<br> The perimeter is ___ in.

Phoenix [80]

4 7/8 = 4 14/16 = 78/16
2 7/16 = 39/16
39/16 + 39/16 + 39/16 + 39/16 = 156/16
78/16 + 78/16 = 156/16
156/16 + 156/16 = 312/16 = 19 8/16 = 19 1/2

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2 years ago

What are the roots of the quadratic equation 2x2+7x+4=0? Select all that apply.

skad [1K]

Answer:

option A and B

$x=\frac{-7+\sqrt{17}} {4}$

and

$x=\frac{-7-\sqrt{17}} {4}$

Step-by-step explanation:

we have

$2x^2+7x+4=0$

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$2x^2+7x+4=0$

$a=2\\b=7\\c=4$

substitute in the formula

$x=\frac{-7\pm\sqrt{7^{2}-4(2)(4)}} {2(2)}$

$x=\frac{-7\pm\sqrt{17}} {4}$

$x=\frac{-7+\sqrt{17}} {4}$

and

$x=\frac{-7-\sqrt{17}} {4}$

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2 years ago

57 plus what equals 100

netineya [11]

Answer: 43

Step-by-step explanation:

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2 years ago

Read 2 more answers

the sale price of an iphone is 179.00. if the percent discount was 20% what was the original price of the iphone?

Tju [1.3M]

100 - 20 = 80
179.00 = 80%
179.00 / 80 = 2.2375 = 1%
1% x 100 = 100%
So, 2.2375 x 100 = 100%
Therefore the original price was 223.75

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3 years ago

If 10% of a group of children are girls, what is the ratio of girls to boys​

If 10% of a group of children are girls, what is the ratio of girls to boys