How do I subtract fractions

1 answer:

3 0

To perform the correct operation as to subtract numbers, make sure the denominators are the same, and then one can then subtract and remove a smaller number from the larger one.

This same method also holds true for adding fractions together as well.

Another way to subtract fractions is to convert them from fraction form to decimal form and then align the decimal points and subtract the values.

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The average final exam score for the statistics course is 77% and the standard deviation is 8%. A professor wants to see if the

pochemuha

Answer:

There is not enough evidence to support the claim that average score for those given colored pen is greater than 77

Step-by-step explanation:

Given the data : 75, 78, 74, 89, 76, 92, 81, 87, 77, 79, 75, 81, 52, 80, 98, 72, 78

Using calculator :

Sample mean, xbar = 79.06

Sample standard deviation = 9.85

Sample size, n = 17

H0 : μ = 77

H1 : μ > 77

The test statistic : (xbar - μ) ÷ (s / sqrt(n))

(79.06 - 77) ÷ (9.85 / sqrt(17))

2.06 ÷ (9.85 / sqrt(17))

= 0.8623

The Pvalue from Tscore :

Pvalue = 0.20063

Since pvaue is > α ; we fail to reject the null ` There is not enough evidence to support the claim that average score for those given colored pen is greater than 77

5 0

3 years ago

what is the value, after 7 years, of a 2014 ford mustang that originally costs $25000.00 if it depreciates at a rate of 8% per y

mixas84 [53]

The equation for this problem is (25,000 · 7)·0.08
175,000 · 0.08
14,000
The answer is 14,000.
Hope this helps! :D

6 0

3 years ago

Read 2 more answers

Given: b || C; 22 and 23 are supplementary<br> Prove: а || b

NeTakaya

Answer:

N/A