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Vaselesa [24]
3 years ago
15

(x² + 6x − 16)(x − 2) = ax³ + bx² + cx + d

Mathematics
1 answer:
stellarik [79]3 years ago
3 0
B is the right answer to this question
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The total water usage for a city is 500,000 gallons each day. Of that total, 19% is for personal use and 42% is for industrial u
OleMash [197]

Ok. So we are going to multiply 500,000 and .19

Personal use: 500,000*.19=95,000

Industrial use: 500,000*.42=210,000

In this work, it shows that there is more used for industrial use than for personal use.

But none the less. We are going to subtract this. 210,000-95,000=115,000. 115,000 more gallons are used for industrial use than for personal use.

I hope this helps, if you have any other questions on this or any other question, just ask. I am here to help you as needed.

4 0
3 years ago
Shayla is 5 feet tall and casts a shadow 2 feet long. at the same time, a nearby lamppost casts a shadow 8 feet long. write and
777dan777 [17]
Here is a proportion

5/2 = x/8

2x = 40
/2      /2

x = 20

Hope this helps
6 0
3 years ago
Read 2 more answers
(5n-1)(n+1)=0 factory
gavmur [86]

Answer:

5n^2+(4n)-1

Step-by-step explanation:

(5n-1)(n+1)=0

Lets find <em>n.</em>

(5n-1)(n+1)=0

FOIL it.

5n^2+5n-1n-1

Add/Substract similar factors

5n^2+(5n-1n)-1

5n^2+(4n)-1

Thats your answer.

3 0
3 years ago
The claim is that the white blood cell counts of adult females are normally? distributed, with a standard deviation equal to 1.6
antiseptic1488 [7]
From the question, we know the population standard deviation, σ = 1.63, the sample standard deviation, s = 3.07, the sample mean, \bar{x}=7.43 and the sample size, n = 38.

The question illustrates a hypothesis chi-square test of variance.

The test statistics for a Chi-squared test of variance is given by
T=(n-1)\left( \frac{s}{\sigma} \right)^2 \\  \\ =(38-1)\left( \frac{3.07}{1.63} \right)^2 \\  \\ =37(1.883)^2=37(3.5473) \\  \\ =131.25
7 0
3 years ago
The distance of one lap around a school track is 1/4 miles. Karen walks 6 laps around the track and realizes it is in
Gemiola [76]

Answer:

16

Step-by-step explanation:

because 5.5 is 22 laps and you do 22-6=16.

7 0
3 years ago
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