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shepuryov [24]
2 years ago
14

The square of a non-zero number is equal to 70% of the original number. What

Mathematics
1 answer:
aleksandr82 [10.1K]2 years ago
3 0

Answer:

0.7.

Step-by-step explanation:

x^2 = 0.7x

x^2 - 0.7x = 0

x(x - 0.7) = 0

x = 0, 0.7.

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ali's tyre pressure gauge shows a reading witch is 8 % lower than the actual pressure when the gauge shows 33.58
Rama09 [41]

Answer:

the actual pressure is 31.09

Complete question:

What is the actual pressure when Ali's gauge shows 33.58

Step-by-step explanation:

Given,

Ali's tyre presser gauge show a reading 8% higher than the actual pressure.

Ali's gauge shows 33.58.

Let the actual pressure be x.

According to problem,

 x\times\frac{108}{100} =33.58 { [If 8% increasing  of a no ⇒ The number becomes =                      (\frac{100+8}{100})of the number}

x= \frac{33.58\times100}{108}

x=31.09

Therefore, the actual pressure is 31.09

5 0
2 years ago
Set up a linear system and solve
crimeas [40]

Answer:

1300 and 700 respectively.

Step-by-step explanation:

Let x be invested in first account and y be invested in second account.

ATQ, x+y=2000 and 101=(4)*x/100+7*y/100. Solving it will give us x=1300 and y=700

6 0
2 years ago
Mrs Katie constructs a cube with 512 magnetic block students and her two classes will each make an identical cube. There are 28
devlian [24]
I take it each student is going to make a block. 
She has 25 + 28 students all together which is 53 students total
Each one requires 512 magnetic blocks

Therefore she needs 53 * 512 = 27136 blocks. 

6 0
3 years ago
A horse travels 100 meters at a velocity of 30m/s W. How long does it take the horse to travel this distance?
Dafna1 [17]

The formula for finding time is the distance divided by the velocity.So the answer is 100÷30=3.3333...

6 0
3 years ago
A farmer has a tractor with a length of 25 ft. If his grandson has a 1:8 scale replica pedal tractor, what is the length of the
Andrei [34K]

The length of the toy tractor is 3.125ft

Data Given;

  • length = 25ft
  • ratio = 1:8

To solve this question, we need to find the length of the tractor using ratios.

<h3>What is Ratio</h3>

This is the proportion of a substance to the entire value of that substance.

If the length of the tractor is 25 ft, then the length of the toy tractor can be found when we divide 25 by 8.

l = 25/8 = 3.125ft

The length of the toy tractor is 3.125ft.

Learn more on ratio here;

brainly.com/question/1781657

5 0
2 years ago
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