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goldfiish [28.3K]
3 years ago
10

Help please !!!! I need help

Mathematics
2 answers:
Stells [14]3 years ago
6 0
6x^2-10x^2= -4x^2 then -5x+8=-13 and then -8 turns positive. So the answer would be -4x^2-13x+8
timofeeve [1]3 years ago
5 0

Answer:

ok

Step-by-step explanation:

bmnvkvv

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1.5:12
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1:8 is the simplest form.
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Population density is the number of people per unit of area the population density of a certain region is 60 people per square k
DedPeter [7]

Answer:

1,380 people

Step-by-step explanation:

4 0
2 years ago
Use a statistics calculator to find the area, in decimal form, rounded to four places after the decimal, under the (standard) No
Jlenok [28]

Answer:

a) 0.9641.

b) 0.0082

c) 0.0277

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

(a) ...to the left of 1.8.

p-value of Z = 1.8, which, looking at the z-table, is of 0.9641.

(b) ...to the right of 2.4.

1 subtracted by the p-value of Z = 2.4.

Looking at the z-table, Z = 2.4 has a p-value of 0.9918.

1 - 0.9918 = 0.0082, which is the answer.

(c) ...between 1.8 and 2.4.

p-value of Z = 2.4 subtracted by the p-value of Z = 1.8.

From itens a and b, we have both. So

0.9918 - 0.9641 = 0.0277

6 0
3 years ago
Use this area model to find One-fourth divided by 3.
eimsori [14]

Answer:

It is

Step-by-step explanation:

1/12

That's correct

6 0
2 years ago
The perimeter of a rectangle is 640 ft. the length is 15 ft more than the width. find the are of the rectangle.
aev [14]
The answer to this question is area=length*width
7 0
3 years ago
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