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Marizza181 [45]
3 years ago
15

Need help, I did a similar problem and got it wrong soo...

Mathematics
2 answers:
Karo-lina-s [1.5K]3 years ago
8 0
Percent change = (new number - old number)/(old number) * 100

percent change = (54 - 48)/(48) * 100 = 6/48 * 100 = 0.125 * 100 = 12.5%
pav-90 [236]3 years ago
5 0
Hello!

You must use the percentage increase formula to solve this. The formula is:

[(Old Value - New Value / Old Value × 100]

Now use that formula to solve this:

48 - 54 / 48 × 100 = 12.5

The correct answer is J 12.5%.
You might be interested in
Apples cost $0.75 per pound and bananas cost $1.05 per pound.
dedylja [7]

Answer:

The baker bought 8 pounds of apples and 4 pounds of bananas.

Step-by-step explanation:

a+b=12.

0.75a+1.05b=10.20

First, multiply 2 my 10.

75a+105b=1020.

Then multiply 1 by 75.

75a+75b=900.

Then subtract.

75a+105b=1020

75a+75b=900.

75a-75a+105b-75b=1020-900

30b=120

b=4

Substitute into (1)

a+4=12

a=8.

Hope this helps :)

3 0
3 years ago
Arthur is interested in the effects of sleep deprivation usage on number of calories consumed. He asks a group of 20 college stu
Greeley [361]

Answer:

Arthur knows that there is a difference among the groups somewhere, but he does not know where

Step-by-step explanation:

An ANOVA test is a test to find out whether the results of an experiment or a survey are significant or not. ANOVA test helps the researcher or the experimenter to decide whether they reject the null hypothesis or accept the alternate hypothesis in the experiment. In ANOVA test, the experimenter wants to find if there is a difference between them or not.

In the context, Arthur is doing a study and he wishes to find out effect of a sleep deprivation on the number of the calories that people consumed. He collects some data from his subject group from the sleep lab and after running the ANOVA test, he finds out that he can reject the null hypothesis. So on this basis, Arthur knows that there is some basic difference among the members of the group somewhere, but he does not know where actually the difference is.

3 0
3 years ago
9x - y = 15 2x + 8y = 28
faust18 [17]
9x - y = 15
2x + 8y = 28

Use the substitution method.
Solve for y in the first equation.

9x - y = 15
-y = 15 - 9x
y = -15 + 9x

Now plug in y into the second equation.
2x + 8(-15 + 9x) = 28
2x - 120 + 72x = 28
74x - 120 = 28
74x = 148
x = 2

Plug x back into the rewritten first equation.
y = -15 + 9(2)
y = -15 + 18
y = 3

x = 2, y = 3
5 0
3 years ago
The area of the continent of North America is about 9,540,000square miles. Write 9,540,000 in expanded form using exponents to s
Kobotan [32]
9,000,000+500,000+40,000
8 0
3 years ago
What is the coefficient of x in the equation?<br> y=x+4
Olenka [21]

Answer:

1

Step-by-step explanation:

When a variable does not have a visible coeffecient then the coefficient is 1. (Double check to make sure I'm correct)

4 0
3 years ago
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