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Jlenok [28]
4 years ago
6

Can u HELP me on all

Mathematics
1 answer:
Alekssandra [29.7K]4 years ago
3 0
How many are there because there is no pic

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What is the inverse of the function f(x) = one-ninthx + 2?
Bumek [7]

Answer:   9x - 18

<u>Step-by-step explanation:</u>

Inverse is when you swap the x's and y's and solve for y

\text{Given: }\quad y=\dfrac{1}{9}x+2\\\\\text{Swapped: }x=\dfrac{1}{9}y+2\\\\.\qquad \quad x-2=\dfrac{1}{9}y\\\\.\qquad  9(x-2)=y\\\\.\quad \large\boxed{9x-18=y}

3 0
3 years ago
Test the ability of auto mechanics to identify simple engine problems, an automobile with a single suchproblem was taken to 72 d
jekas [21]

Answer:

The proportion is less than 0.75 only

Step-by-step explanation:

given that the ability of auto mechanics to identify simple engine problems, an automobile with a single suchproblem was taken to 72 different car repair facilities.

Sample proportion= 42/72=0.5833

Set up hypotheses as

H0: p =0.75

Ha: p < 0.75

(Left tailed test)

Assuming H0 to be true, std error of proportion = \sqrt{\frac{0.75*0.25}{72} } \\=0.0668

p difference = -0.1667

Test statistic Z = p diff/std error = -2.50

p value = 0.0062

since p is less than0.05 at 5% significance level we reject null hypothesis

The proportion is less than 0.75 only

6 0
3 years ago
Khloe goes to a store an buys an item that costs xx dollars. She has a coupon for 15% off, and then a 8% tax is added to the dis
SSSSS [86.1K]

Answer:

0.93x

Step-by-step explanation:

the total amount is:

x(1-15%+8%)=0.93x

so the answer is 0.93x

7 0
2 years ago
A small theater had 7 rows of 23 charis workers just removed 9 of these chairs
pshichka [43]

Answer:

152 Chairs

Explanation:

7 rows of 23 chairs: 7 · 23

7 · 23 = 161

Remove 9

161 - 9 = 152

6 0
3 years ago
Read 2 more answers
Write a real world problem that involves finding the area is two circles
Otrada [13]
An architect is trying to build a cover for two cylinders. He knows the radius of Cylinder 1 is 15 inches  and the radius of Cylinder 2 is 16 inches. What is the area of both circles?
8 0
4 years ago
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