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3 years ago

I need help ASAP please and thank you!!!

1 answer:

4 0

C = s + 5

Explanation:

Claire is 5 years older than her sister, so you need to add five years to her sister’s age to get Claire’s age.

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Three pounds less than twice Mike's weight is 215 pounds. What is his weight?

IgorC [24]

Answer:

427

Step-by-step explanation:

Mike's weight is 215 twice that would be 430. Subtract three and , that 'll give you 427

5 0

3 years ago

Read 2 more answers

Day X = 33; Day Y = 44. What is the percent change from day X to day Y?

Serhud [2]

Answer: 33.3% increase, pretty sure

Step-by-step explanation: Big number- Small number, and then divided by the first number: 44-33=11. 11 divided by 33 ( original) is 0.3333, and then change the decimal to a percent, which is 33.3%.

5 0

3 years ago

If New York is 2 inches from Chicago, what is the distance between the two cities?

Burka [1]

Since the picture is giving you the information about the scale equivalence in which

$1inch=557\text{miles}$

use this information to obtain what is 2 inches

$2inches\cdot\frac{557miles}{1inch}=1,114miles$

the distance between the 2 cities will be 1,114 miles

7 0

2 years ago

How do you prove a right angle?

Ksivusya [100]

If the angle is a perfect 90 degrees then it’s a right angle

7 0

3 years ago

Read 2 more answers

An environmentalist wants to find out the fraction of oil tankers that have spills each month. Suppose a sample of 836 tankers i

Alexxandr [17]

Answer:

The 99% confidence interval for the population proportion of oil tankers that have spills each month.

(0.6489 , 0.7311)

Step-by-step explanation:

Step(i):-

Given sample size 'n' = 836

Suppose a sample of 836 tankers is drawn. Of these ships, 577 did not have spills.

sample proportion

$p^{-} = \frac{x}{n} = \frac{577}{836} = 0.690$

The 99% confidence interval for the population proportion is determined by

$(p^{-} - Z_{0.01} \sqrt{\frac{p(1-p)}{n} } , p^{-} + Z_{0.01} \sqrt{\frac{p(1-p)}{n} })$

Step(ii):-

The Z- value = 2.576

$(0.690 - 2.576 \sqrt{\frac{0.690(1-0.690)}{836} } , 0.690 + 2.576 \sqrt{\frac{0.690(1-0.690)}{836} })$

On calculation , we get

(0.690 - 0.0411 , 0.690 + 0.0411)

(0.6489 , 0.7311)

Final answer:-

The 99% confidence interval for the population proportion of oil tankers that have spills each month.

(0.6489 , 0.7311)

8 0

4 years ago