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Verdich [7]
3 years ago
5

Part 3 please ASAP due tonight

Mathematics
2 answers:
Kamila [148]3 years ago
7 0

Answer:

You have to read at least 5 books per month.

Step-by-step explanation:

18x≥90

Divide each side by 18

x≥5

Nikitich [7]3 years ago
5 0

Answer:

You have to read at least 5 books per month

Step-by-step explanation:

Just do 90 books, divided by 18 months and you get 5 books per month

You might be interested in
A car dealership has found that the length of time before a major repair is required on the new cars it sells is normally distri
weqwewe [10]

Answer:

Step-by-step explanation:

Hello!

The variable of interest in this case is:

X: length of time before a major repair is required on a new car. (months)

This variable has a normal distribution with mean μ= 36 months and a standard deviation σ= 9 months.

If he wants to set a guarantee period in which only 5% of the sold cars fell, the objective is to find the value of X that has below 5% of the cars that need major repairs before the end of the guarantee period.

Check the attachment, the curve represents the distribution of the population of the time it takes before a new car needs major repairs, I've marked approximately where this value of X should be.

Symbolically:

P(X≤a)=0.05

To reach the proper value of "a" you have to work using the standard normal distribution because is a tabulated distribution and you can extrapolate it to any normal distribution.

Z= \frac{X-Mu}{Sigma}~N(0;1)

So the first step is to look in the table of the Z distribution for the value that accumulates 0.05 of probability since it is such a low probability, you have to look for the value in the left side of the table (negative values of Z). You look for 0.05 in the body of the table and then the margins for the corresponding value (see second attachment)

Z_{0.05}= -1.64

Then the value that accumulates 0.05 of probability is -1.64, now you have to reverse the standardization to reach the asked value of X

Z= (a- μ)/σ

(Z*σ)= a - μ

a=(Z*σ)+ μ

a=(-1.64*9)+36

a= 21.24 months.

The guarantee period should be 21.24 months so that only 5% of the sold cars will need major repairs before it wears of.

I hope it helps!

5 0
3 years ago
I need help with this
eduard

Answer:are there choises?

Step-by-step explanation:

4 0
2 years ago
PLEASE HELP!<br><br> Question is on photo! <br> Thank you!!
ipn [44]

We conclude that the relation presented in the picture is a function with domain: - 4 ≤ x < 1 and range: - 4 ≤ x ≤ 5. (Correct choices: B, C, H)

<h3>How to determine the domain and range of a relation and if a relation is a function</h3>

Herein we have a relation between two variables, x and y, relations involve two sets: an input set called domain and an output set called range. A relation is a function if and only if every element of the domain is related to only one element from the range.

Graphically speaking, the horizontal axis corresponds with the domain, whereas the vertical axis is for the set of the range. According to the previous concepts, we conclude that the relation presented in the picture is a function with domain: - 4 ≤ x < 1 and range: - 4 ≤ x ≤ 5. (Correct choices: B, C, H)

To learn more on functions: brainly.com/question/12431044

#SPJ1

7 0
1 year ago
Find the area of the figure.
Kruka [31]
Divide the shape into a rectangle and a triangle.

A(rectangle) = bh
A = 8*3
A = 24

A (triangle) = (bh)/2
A = (3*3)/2
A = 4.5

24 + 4.5 = 28.5
8 0
3 years ago
What is the measure of side AB
kkurt [141]
16 because the AB side gotta be a little bit bigger than the two other sides
8 0
3 years ago
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