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s2008m [1.1K]
2 years ago
15

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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Write the expression 2a+b in the form of a fraction with the given denominator. Check if the domain of the expression changed. I
Ymorist [56]

Answer:

See below

Step-by-step explanation:

I will assume the given denominator is 3a as there is nothing attached to the statement.

Lets first look at the domain of 2a+b. As it is a polynomial with unknowns a and b, we know it has its domain in all real numbers for both  a and b as every polynomial does. For verifying it replace a and b by any real number you can think of.

Domain = a, b belonging to R

Now, if we divide 2a+b by 3a we will have:

(2a+b)/3a

As know we don not have a polynomial we cant state that the domain will still be all the real numbers for sure. We need to go further.

We have a fraction and as every fraction the denominator CAN'T be equal to 0, so 3a MUST be different to 0. This means that a MUST be different to 0. So, now our domain changes:

domain' = a, b belonging to R and a different to 0.

6 0
3 years ago
Ellie takes her dog, Jack, for a 3 mile walk each day. On the first part of the walk, they go 2 mph. Then for the second part of
padilas [110]

Answer:

the entire walk is 9/7 hours i think

6 0
3 years ago
On top of a hill, a rocket is launched from a distance 80 feet above a lake. The rocket will fall into the lake after its engine
Free_Kalibri [48]
The maximum height is 144 feet.

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Now we substitute this into the equation:
y = -16(2²) + 64(2) + 80 = -64 + 128 + 80 = 144
3 0
3 years ago
Triangle ABC will be dilated according to the rule D Subscript F, 0.25(x,y), where point F is the center of dilation. On a coord
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Answer:

(1, 0)

Step-by-step explanation:

correct answer

3 0
3 years ago
Read 2 more answers
How to simplify fractions
serious [3.7K]

Step-by-step explanation:

\frac{2}{3} + \frac{2}{9} \\\\\frac{6+2}{9}\\\\\frac{8}{9}

5 0
3 years ago
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