2 years ago

A plane is flying at 31,348 feet. It needs to rise to 36,000 feet in two stages

Mathematics

1 answer:

sp2606 [1]2 years ago

7 0

Answer: about 22 minutes
Explanation: its hard to explain but trust me i checked my work

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Ms. Lindsey surveyed a random sample of students at her school to determine how they got to school. The results are shown below:

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20 I think because 8+12

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2 years ago

Write an equation to find the amount of money in Pertro’s account if the total of all their accounts is $148.

SSSSS [86.1K]

Answer:

P = 2(21 + 3)

= 2(24)

=$48

Step-by-step explanation:

Add them all up.

s + 2(s+3) + 4s-5 = 148

s + 2s + 6 + 4s - 5 = 148

Group all s together and all numbers together 7s + 1 = 148

7s = 147

Divide by 7

s = 21

Plug s=21 back in for Petro

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2 years ago

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The meat department of a supermarket sells ground beef in approximate 1 lb packages, but there is some variability. A random sam

grin007 [14]

Answer:

1.05 ± 0.05 lbs

Step-by-step explanation:

Hi!

We can calculate this interval with the z-score of the 90% which is (by convention) 1.645

The interval is calculated as follows:

$x_m \pm 1.654(\frac{\sigma}{\sqrt n})$

where x_m is the mean, σ the standar deviation and n is the number of samples:

replacing these values we get:

$1.05 \pm (1.645 \times \frac{0.23}{\sqrt 65})\\1.05 \pm 0.046$

*rounded to the first decimal*

1.05 ± 0.05

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2 years ago

What is a fraction that is equivalent to 0.997

Stels [109]

997/1000 hope this helps

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2 years ago

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Lee needed to make drapes the length from the floor to the top of the window. The wall beneath the window had the height of 2 2/

aalyn [17]

$We\ should\ sum \ those \ two\ measurements\ to \ obtain\ length\ of\ drapes\\\\
2 \frac{2}{3}+2\frac{3}{4}=\frac{8}{3}+\frac{11}{4}=\frac{24}{12}+\frac{33}{12}=\frac{57}{12} =4,75feet$

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2 years ago