3 years ago

What would be a resonable estimate for the value of m in this equation? m/6=21

Mathematics

1 answer:

yaroslaw [1]3 years ago

5 0

126. 21 times 6= 126 and 126 divided by 6 equals 21 m=126

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Step-by-step explanation:

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3 years ago

It was recently estimated that females outnumber males by about three or two. If there are 1770 people in a county, how many of

max2010maxim [7]

GIVEN

1) Females outnumber males by 3 to 2.

2) There are 1770 people in the city.

SOLUTION

Let the number of males be x and the number of females y. Therefore, the total number of people can be written to be:

$x+y=1770\text{ -----------(1)}$

If there are 3 females for every 2 males, we have that:

$\begin{gathered} \frac{y}{3}=\frac{x}{2} \\ \therefore \\ x=\frac{2y}{3}\text{ ----------(2)} \end{gathered}$

We can substitute equation (2) into equation (1) and solve for y:

$\begin{gathered} \frac{2}{3}y+y=1770 \\ \frac{2y+3y}{3}=1770 \\ 5y=1770\times3 \\ 5y=5310 \end{gathered}$

Dividing both sides by 5, we have

$y=1062$

There are 1062 females in the county.

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1 year ago

An air plane moves at a constant speed of 120 miles per hour for 3 hours. How far does it go?

Anvisha [2.4K]

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Simplifica 2^4 . 2^3

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Answer:

Step-by-step explanation:

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