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3 years ago

Help me I need it ASAP

Mathematics

1 answer:

anygoal [31]3 years ago

5 0

Answer:

B- 1 inch= 2 feet

Step-by-step explanation:

For this make a fraction, and then simplify. This will show the scale factor.

$\frac{20}{10} =\frac{2}{1}$

So, the answer will be 1 inch=2 feet.

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Can someone please help me with #3?

kap26 [50]

Answer:

Step-by-step explanation:

First, make sure you know which section of the number line you want as 1 and 2. Next, put 0.25 not right at 0 but very close, then put 0.75 farther but not too much from 0.25. Then for the decimal 1.99 put that very close to where you marked the 2 but, not on the 2. Finally, put 2.03 very close to 2 but not exactly on the 2. Also, make sure that the number line is marked evenly.

7 0

3 years ago

Three brothers share 2 sandwiches equally. Hoe much of a sandwich does each brother get?

melisa1 [442]

Divide 3 by 2 to get 1.5

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3 years ago

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Extreme cold and hot temperatures are known to affect the operation of electronic components. Winter is approaching and you are

Musya8 [376]

Answer:

A 95% confidence interval for the true mean minimum temperature that will damage an iPod is between 2.55°F and 7.45°F

Test statistic(Z) = 2.31

P-value = 0.0104

Step-by-step explanation:

Step 1

Null hypothesis: The average damaging temperature of nine iPods is 5°F

Alternate hypothesis: The average damaging temperature of nine iPods differs from 5°F

Step 2

Mean=5°F, Sd=3, df=n-1=9-1=8

The t-value corresponding to 8 degrees of freedom and 95% confidence level (5% significance level) is 2.306

Confidence Interval(CI) = (mean + or - t×sd/√n)

CI = (5 + 2.306×3/√8) = 5 + 6.918/2.828= 5+2.45=7.45°F

CI = (5 - 2.306×3/√8) = 5-2.45 = 2.55°F

Z = (sample mean - population mean)/(sd÷√n) = (5-2.55)/(3÷√8) = 2.45/1.061 = 2.31

Step 3

Using the standard distribution table, the cumulative area to the left of Z = 2.31 is 0.9896

P-value = 1 - 0.9896 = 0.0104

Step 4

Conclusion: A 95% confidence interval for the true mean minimum temperature that will damage an iPod is between 2.55°F and 7.45°F

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3 years ago

Express 4 4/9 as an improper fraction. Example please.

miskamm [114]

Simple...

you have: $4 \frac{4}{9}$

To make this into an improper fraction-->>

1.) Multiply whole number by denominator

2.)Add the number you got plus the numerator

3.) Use the original denominator to finish your improper fraction

Example: $4\frac{4}{9}$

4*9=36

36+4=40

$\frac{40}{9}$

Thus, your answer.

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3 years ago

What is the product of 8 and 54

Anestetic [448]

The product of 8 and 54 is 46

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3 years ago

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