2 years ago

If three times a certain number is increased by 4 the result is 28

Mathematics

2 answers:

alex41 [277]2 years ago

7 0

The number is 8. You work backwards. 28-4=24. 24/3=8

Anastasy [175]2 years ago

3 0

Answer:

The number is 8

Step-by-step explanation:

Let x be the number

3x+4 = 28

Subtract4 from each side

3x+4-4 = 28-4

3x= 24

Divide by 3

3x/3 =24/3

x = 8

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Read 2 more answers

In a class of 40 students, everyone has either a pierced nose or a pierced ear. The professor asks everyone with a pierced nose

ladessa [460]

Answer:3

Step-by-step explanation:

Given

There are total 40 students in a class

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No of students with Pierced ear n(E)=36

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$n\left ( N\cup E\right )=n\left ( E\right )+n\left ( N\right )-n\left ( N\cap E\right )$

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3 years ago

What is the solution of the equation (4x + 3)2 = 18?

saveliy_v [14]

Hello!

First of all, let's undo the parentheses.

8x+6=18

Now we subtract 6 from both sides.

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Finally, we divide both sides by 8.

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I hope this helps!

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