MATHEMATICS MIDDLE SCHOOL

Four times what equals thirty?

Answers

Answer 1
Answer: Hi there!

Great question! :D

To figure out our unknown value, we can replace our unknown value, or blank space, with x.

So our equation would look something like 4x = 30

We have a variable next to a number to show we are multiplying. But since we're figuring out an unknown, we'll do the opposite, which is division.

4x = 30

We'll divide both sides by our 4.

(4x)/(4) = (30)/(4)

We can eliminate the variable right away on our left side of our equation. This makes it look like there's not a lot of steps through solving.

(30)/(4) = 7.5

Final answer:

x = 7.5

When in doubt of your answer, we can multiply 4 by 7.5 and see what we get. We should get 30.

4 * 7.5 = 30 :)

We were right!

Hope this helps! :D
Answer 2
Answer: 4x=30
4x/4=30/4
x=7.5

Hope this helps!!

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Evaluate the expression when a = 4. 2a^3

A.
14

B.
24

C.
128

D.
512

Answers


2(4)^3

2(64)

=128 Your final answer would be C
2a^3
2(4)^3
2(64)
128
The answer is C

In the figure , a || b and m 1= 34 degrees
What is m 2
_____ degrees

Answers

m\angle 2=180-m\angle 1\nm\angle 2=180-34\nm\angle 2=146^(\circ)

Pythagorean triple
Find x

Answers

15 coz, 39² - 36² = 225
225=15²

Answer:

the answer to your problem is 15

Step-by-step explanation:

amy has 72 Suites in a bag she keeps one fourth of them for herself and share the rest with their friends how many sweets will he get her friends

Answers

So,

If she keeps one-fourth for herself, she will keep:
72 * 0.25 = 18

That leaves the rest for her friends.
72 - 18 = 54

Her friends will get 54 "Suites."

Is 8 out of 10 and 25 out of 30 boys playing sports the same

Answers

I think it's not the same.  
8 divided by 10 = 1.25
25 divided by 30 is = 1.2
8:10 and 25:30.
They are ratios.


Hope this helps.

What is the solution set of the given equation?
4y-6y+9y=-2​

Answers

Answer:

4y-6y+9y=-2

-2y+9y=-2

7y=-2

therefore divide 7 on both sides

7y/7=-2/7

y=-2/7

y=-0.2857
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