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skelet666 [1.2K]
3 years ago
10

Write a proportion that could be used to solve for each variable. Then solve.

Mathematics
1 answer:
Sati [7]3 years ago
5 0
<span>16 walls in 40 hours 
3 walls in h hours

16/40 = 3/h

16h = 40(3)
16h = 120
h=120/16
h=7.5

answer: </span><span>3 walls in 7.5 hours</span>
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7. What is the length of the line segment between A(–5, 8) and B(7, 8)?
Verizon [17]

Answer:

7) C

8) B

9) C

Step-by-step explanation:

7) sqrt[(8-8)² + (-5-7)²] = 12 units

8) y = 4x

9) y = 6 - x

4 0
3 years ago
On a particular day, the wind added 5 miles per hour to Alfonso's rate when he was cycling with the wind and subtracted 5 miles
sattari [20]

speed with no wind = s

speed with wind = s + 5

speed against wind = s - 5

time = t

speed = distance/time

distance = speed * time

With wind, time = t, speed = s + 5, distance = 50

50 = (s + 5)t

Against wind, time = t, speed = s - 5, distance = 30

30 = (s - 5)t

t = 30/(s - 5)

50 = (s + 5) * 30/(s - 5)

50(s - 5) = (s + 5) * 30

50s - 250 = 30s + 150

20s = 400

s = 20

Answer: 20 mph

3 0
4 years ago
All professional athletes earn a lot of money.Wes plays professional football so he makes a lot of money. What type of reasoning
anygoal [31]
Deductive. Since you're making the assumption from something that is mainly true
3 0
3 years ago
Read 2 more answers
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
It says Find out the value of x
Dovator [93]
33)31
34) 31
35) 21

Check the last one to make sure it’s right . The first 2 I’m 100% sure they are correct
7 0
3 years ago
Read 2 more answers
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