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Aleonysh [2.5K]
3 years ago
5

15 POINTS! PLEASE HELP!

Mathematics
2 answers:
lara [203]3 years ago
8 0
So this would be F(-9)=-(-9)(2)-10(-9)-2 --------
9(2)-10(-9)-2 ----------- 18+90-2 ----------- 108-2+ 106.
So the answer to this equation is 106.

Nina [5.8K]3 years ago
4 0
Plug in -9 where there is a x
-(-9)^2 -10 (-9) -2
X=7
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A backpack that normally sells for $40 is on sale for $38. Find the percent of increase or decrease. *20 POINTS* (PLS SHOW WORK)
GaryK [48]

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Step-by-step explanation:

3 0
3 years ago
The values in a dataset are 3.5, 2.5, 2.5, 3.5, and 3.0. If Xbar (sample mean) = sigma X / n, what is the mean for the sample?
RideAnS [48]

Answer:

\bar x = 3.0

Step-by-step explanation:

Given

x: 3.5, 2.5, 2.5, 3.5, 3.0

Required

The sample mean

This is calculated using:

\bar x = \frac{\sum x}{n}

So, we have:

\bar x = \frac{3.5+ 2.5+ 2.5+ 3.5+ 3.0}{5}

\bar x = \frac{15.0}{5}

\bar x = 3.0

4 0
3 years ago
Determine if the sequence is algebraic or geometric, and find the common difference or ratio.
sukhopar [10]

Answer:

Algebraic, common difference = −9

Step-by-step explanation:

The first term of the series is 81, the second term is 72, the third term is 63 and the fourth term is 54.

So, the value of the terms decreases as the number of terms increases and this decrease in value is common and it is 9.

Therefore, the series is Algebraic series and the common difference is - 9. (Answer)

8 0
3 years ago
Read 2 more answers
2 de secundaria pajina 25 contestada<br>​
melisa1 [442]
I don’t know i don’t speak spanish
7 0
3 years ago
In the town zoo 3/8 of the animals are birds. Of the birds 4/15 are birds of prey. What fraction of the animals are nirds of pre
poizon [28]
<span>3/8 of the animals are birds<span>
of the birds: 4/15 are birds of prey

If you want to know what fraction of the animals at the zoo are birds of prey, you can calculate this using the following steps:

4/15 * 3/8 <span>= 12 / (15*8) = </span>1 / (5*2) <span>= </span>1 / 10 = 0.1

<span>Result: In the town zoo, </span>1/10 of animals are birds of prey<span>.</span></span></span>
5 0
3 years ago
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