2 years ago

I really need help guys

Mathematics

1 answer:

Degger [83]2 years ago

7 0

Answer:

Step-by-step explanation:

First you have to organize your information:

3 Teach.= 70 children

There are 14700 children 210 times 70.

You multiply 3*210 =70*210 because if you multiple one side you have to do the other to.

This equals 630= 14700. They need 630 teachers.

They have 612 so you only have to subtract 630 -612 =18

They need 18 teachers more.

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Evaluate the expression when x =19 and y =7

PtichkaEL [24]

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Plug in X and Y by replacing the given numbers where you see letters.

Step-by-step explanation:

What I said above.

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2 years ago

Sin 30 = A. Cos 30 B. Sin 60 C. Tan 60 D. Cos 60

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3 years ago

In the diagram, what is the ratio of patterned circles to plain circles?

garri49 [273]

5:12 abcdefghijklmnopqrstuvwxyz

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3 years ago

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otez555 [7]

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4 0

2 years ago

What is an equivalent to -16m^2n-(-25m^2n)+(-7m^2n)

pantera1 [17]

Answer:

The equivalent expression is:

$-16m^2n-\left(-25m^2n\right)+\left(-7m^2n\right)=2m^2n$

Step-by-step explanation:

Given the expression

$-16m^2n-\left(-25m^2n\right)+\left(-7m^2n\right)$

$\mathrm{Remove\:parentheses}:\quad \left(-a\right)=-a,\:-\left(-a\right)=a$

$=-16m^2n+25m^2n-7m^2n$

$\mathrm{Add\:similar\:elements:}\:-16m^2n+25m^2n-7m^2n=2m^2n$

$=2m^2n$

Therefore, the equivalent expression is:

$-16m^2n-\left(-25m^2n\right)+\left(-7m^2n\right)=2m^2n$

7 0

2 years ago

I really need help guys​

I really need help guys