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3 years ago

15

To test the purity of the hydrazine, the chemist collected a sample 1/2000th the volume of the batch produced. If the sample siz

e was 0.4 liters, what was the volume of the production batch?

1 answer:

Bad White [126]3 years ago

3 0

If 0.4 liters is 1/2000 of the production batch, then the production batch is 2000 * 0.4 liters

2000 * 0.4 liters = 800 liters

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Find the area pf a trapezoid with a base of 26.7 ft , a height of 15.4 and top of 9.9 ft

evablogger [386]

Hello!

To find the area of the trapezoid, you use the formula A=1/2h(a+b), where a and b represent the two base lengths.

Since we already know the two bases and the height, we can just plug them into the equation to find the area.

A=1/2·15.4(26.7+9.9)
A=1/2·15.4(36.6)
A=1/2·563.64
A=281.82

The area is 281.82 ft².

I hope this helps!

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3 years ago

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Aleksandr-060686 [28]

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3 years ago

The tread life of a particular brand of tire is a random variable best described by a normal distribution with a mean of 60,000

valina [46]

Answer: 61,750 miles

Step-by-step explanation:

Given : The p-value of the tires to outlast the warranty = 0.96

The probability that corresponds to 0.96 from a Normal distribution table is 1.75.

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Standard deviation : $\sigma=1000\text{ miles}$

The formula for z-score is given by : -

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Hence, the tread life of tire should be 61,750 miles if they want 96% of the tires to outlast the warranty.

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3 years ago

What division equation is related to 4*6=24

kvv77 [185]

Maybe something like 24/4=6. so sorry if I'm incorrect.

8 0

3 years ago

Read 2 more answers

andreev551 [17]

Answer:

see explanation

Step-by-step explanation:

Part 1

The n th term of a geometric sequence is

$a_{n}$ = a $(r)^{n-1}$

where a is the first term and r the common ratio

Given $a_{6}$ = 128, then

a $(2)^{5}$ = 128, that is

32a = 128 ( divide both sides by 32 )

a = 4 ← first term

Part 2

$a_{21}$ = 4 $(2)^{20}$ = 4 × 1048576 = 4194304

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3 years ago