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katrin2010 [14]
2 years ago
8

Clare bought a new pair of shorts for $ 13.75. This was 25% off the regular price. What was the original price? ( Round your ans

wer to the nearest cent.)

Mathematics
1 answer:
Inessa05 [86]2 years ago
7 0

Answer:

18.3

Step-by-step explanation: Here i'll give you my notes for finding original price

1. make the percent into a decimal

2. subtract the decimal by 1

3. divide the number you just got and the decimal you got from the first step

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What is the inverse of the function f(x) = 2x - 10?
Oxana [17]

Answer:

h(x) = 1/2x + 5

Step-by-step explanation:

Switch the positions of the x and y (f(x)) and solve for y (f(x)).

f(x) = 2x - 10

x = 2y - 10

x + 10 = 2y

(x + 10)/2 = y

1/2x + 5 = y

3 0
2 years ago
How do u rewrite 0.72 repeating as a simplified fraction?
vampirchik [111]
8/11 is the answer

I use this trick: When tryig to find repeating numbers divide by 11 or 9

When dividing by 9 the numerator will be the first number in the decimal

When dividing by 11 the numerator will be one more than the first number in the decimal
8 0
2 years ago
Which planet is 10 times as far as earth is from the sun?
ExtremeBDS [4]
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4 0
3 years ago
Read 2 more answers
pH measurements of a chemical solutions have mean 6.8 with standard deviation 0.02. Assuming all pH measurements of this solutio
aalyn [17]

Answer: 2.14 %

Step-by-step explanation:

Given : pH measurements of a chemical solutions have

Mean :  \mu=6.8

Standard deviation : \sigma=0.02

Let X be the pH reading of a randomly selected customer chemical solution.

We assume  pH measurements of this solution have a nearly symmetric/bell-curve distribution (i.e. normal distribution).

The z-score for the normal distribution is given by :-

z=\dfrac{x-\mu}{\sigma}

For x = 6.74

z=\dfrac{6.74-6.8}{0.02}=-3

For x = 6.76

z=\dfrac{6.76-6.8}{0.02}=-2

The p-value =P(6.74

P(z

In percent, 0.0214\times=2.14\%

Hence, the percent of pH measurements reading below 6.74 OR above 6.76 = 2.14%

6 0
3 years ago
6(x+7) + (x+3)<br> 7x + 10<br> 7x + 45<br> 2x = 21<br> 42 + 45x
fenix001 [56]
7x + 45
(6x +42) + (x +3)= 7x + 45
3 0
3 years ago
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