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Lady bird [3.3K]
3 years ago
7

Solve the following​

Mathematics
1 answer:
love history [14]3 years ago
3 0
Let’s say the unknown number is x.
therefore,
(2x)^2/3 - 30= 18
4x^2/3 -30 = 18
4x^2-90/ 3 = 18
multiply 18 by 3, and 4x^2-90 by 1
hence,
4x^2-90 = 54
4x^2=144
x^2= 144/4
x^2= 36
x=+ or - 6
hope it helps:)
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60% of x = 2.8

Simply means: 60/100 * x = 2.8

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5 0
3 years ago
Explain how knowing that five divided by eight equals 0.625 helps you write the decimal for four and five eighth
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3 years ago
C=5/9(F-32) help please
stiv31 [10]
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4 0
3 years ago
Matt needs to swim 8 meters in 25 seconds yo qualify as a state swimer. Which unit rate describes the speed Matt needs to swim​
fiasKO [112]

Answer:

Option D, 0.32 meters per second

Step-by-step explanation:

<u>Step 1:  Find the unit rate at which Matt needs to swim</u>

Make an equation to represent the scenario.

<em>25m = 8</em>

<u>Step 2:  Solve for m by dividing both sides by 25</u>

25m / 25 = 8 / 25

<em>m = 0.32</em>

<u>Step 3:  Check</u>

To check, you can multiply the number of second, 25, by the meters per second to see if you get the total meters, 8.

0.32 * 25

<em>8</em>

So, the answer is correct :)

<u><em>0.32 means that Matt needs to swim 0.32 meters per second to qualify as a state swimmer.</em></u>

Answer:  Option D, 0.32 meters per second

3 0
3 years ago
Read 2 more answers
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