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aalyn [17]
3 years ago
5

!!!!! HELP PLEASEEE!!!!

Mathematics
1 answer:
Rudik [331]3 years ago
5 0

Answer:

replace x with each of the value then solve for the value

Step-by-step explanation:

when raised to the power of a negative you do the inverse

2^-2    =    2^1/2

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$20 haircut with 10% and 7% tax
Anika [276]

20 * .10 = 2  <em>(2 = 10% of 20)</em>

20 + 2 = 22

20 x .07 = 1.4  <em>(1.4 = 7% of 20)</em>

20 + 1.4 = 21.4

The price of a 20$ haircut with a 10% tax would be $22.

The price of a 20$ haircut with a 7% tax would be $21.40.

4 0
3 years ago
Solve for x in the equation x2 – 12х+ 36 = 90
Leviafan [203]

Answer:

5

Step-by-step explanation:

90-36=54

54-24=30

5 0
3 years ago
|5/14|find the absolute value of 5 of 14 find the absolute value of 5/14
Sunny_sXe [5.5K]
The absolute value of \frac{5}{14} is \frac{5}{14}
3 0
3 years ago
An H0-scale model railroad engine is 9 inches long. The H0 scale is 87 feet to 1 foot. How long is a real engine?
Semmy [17]

The real engine is 65.25 feet long

<h3>How to determine the length?</h3>

The scale is given as:

Scale = 87 feet to 1 foot

The scale length is given as

Scale length = 9 inches

Convert inches to feet

Scale length = 9/12 feet

The actual length is then calculated as:

Actual = 87 * 9/12 feet

Evaluate

Actual = 65.25 feet

Hence, the real engine is 65.25 feet long

Read more about scale ratios at:

brainly.com/question/16192120

#SPJ1

7 0
2 years ago
Environmentalists concerned about the impact of high-frequency radio transmissions on birds found that there was no evidence of
babunello [35]

Answer:

No, we cannot conclude anything about 0.10

Yes, they have made the same decision.

Step-by-step explanation:

Consider the provided information.

Part (A)

They based this conclusion on a test using α = 0.05. Would they have made the same decision at α = 0.10

A significance level of 0.05 indicates a 5% risk of concluding that a difference exists

From the normal table the critical value is Z(0.05) = 1.645 and we accept null hypothesis.

If α = 0.1, the critical value is Z(0.1)=1.28

1.28 is less than 1.645.

Therefore, we cannot conclude anything about 0.10

Part (B)

α = 0.01, the critical value is Z(0.01)=2.33

The critical value of α = 0.05 is 1.645 which is less than 2.33,

So we would again reject the null hypothesis.

Hence, they have made the same decision.

6 0
3 years ago
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