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Ipatiy [6.2K]
3 years ago
15

Hiil have some dought​

Mathematics
2 answers:
bonufazy [111]3 years ago
8 0

Answer:

I'm sorry what?

harkovskaia [24]3 years ago
4 0
Ask me, Let’s see if I can help
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Can anyone help me pls???
Rus_ich [418]

Answer:

It's

Step-by-step explanation:

9a-3b

because 3×3a is 9a and 3×-b is -3b hope this helps

6 0
3 years ago
Read 2 more answers
A drawer is filled with 9 black shirts, 6 white shirts, and 5 gray shirts.
Lesechka [4]

Answer:

The probability is 1/20 or 5 %

Step-by-step explanation:

1). First, how many shirts there are in the drawer?

  9 + 6 + 5 = 20 shirts

2). Since we are choosing 1 shirt out of 20, then the probability will be 1/20 or 5%.

Hope this helpsss))

7 0
4 years ago
For the following hypothesis test, determine the null and alternative hypotheses. Also, classify the hypothesis test as two-tail
bagirrra123 [75]

Answer:

Option B:

H_0: \mu = 22.1

H_a: \mu \neq 22.1

Classification:

The hypothesis test is Two-tailed.

Step-by-step explanation:

The mean length of imprisonment for motor-vehicle theft offenders in this country is 22.1 months.

This means that the null hypothesis is that the mean is of 22.1 months, that is:

H_0: \mu = 22.1

A hypothesis test is to be performed to determine whether the mean length of imprisonment for motor-vehicle theft offenders in this city differs from the national mean of 22.1 months.

At the alternate hypothesis, we test if this mean is different of 22.1, that is:

H_a: \mu \neq 22.1

Which means that the answer is given by option b).

Which of the following is the correct classification of the hypothesis test?

We test if the mean is different from a value, which means that the hypothesis test is Two-tailed.

7 0
3 years ago
50 inches tall last year and this year you are 60 inches tall. How much did you grow in the 1 year?
DiKsa [7]

You grew 5 feet this year.

You grew 5 feet this year because you know that 1 foot is = to 12 inches. Divide 12 by 60 and you get 5.

Therefore, your answer is 5.

5 0
4 years ago
What’s the area of the shaded region?
Leni [432]

Answer:

217.04 cm²

Step-by-step explanation:

We should first calculate the area of the rectangle:

A= 14*21 =294cm²

then we should substract the area of the half-cercle :

A'= (7²*π)/2=76.96 cm²

then the area of the shaded area is :

A"= 294-76.96= 217.04 cm²

5 0
3 years ago
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