Mathematics, 17.11.2020 16:50 cbrewer37

Jamal works as an electrician's apprentice. He rewired 4 electrical outlets in 1 and one-halfhours. If he works at the same pace for 7.5 hours, how many outlets will he rewire? 5 outlets 13 outlets 20 outlets 30 outlets

Answers: 3

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Answer from: sairaanwar67

Given :

Jamal works as an electrician's apprentice. He rewired 4 electrical outlets in 1 and one-halfhours.

To Find :

If he works at the same pace for 7.5 hours, how many outlets will he rewire.

Solution :

Let, rate of wire rewired in one hour is r.

So, $r=\dfrac{4}{1.5}\ = \dfrac{8}{3}\ rewire/hour$ .

Now, number of outlets rewired in 7.5 hours are :

$N=7.5\times\dfrac{8}{3}\\\\N = 20$

Therefore, he will rewire 20 outlets in 7.5 hours.

Hence, this is the required solution.

Answer from: garretthyatt123

20 outlets

Step-by-step explanation:

Number of outlets rewired in 1.5 hours = 4

Jamal keeps on working at the same pace 7.5 hours.

To find:

Number of outlets rewired = ?

Solution:

The answer can be found by using the unitary method.

First of all, we need to find number of outlets rewired in 1 hour.

And then, we can multiply with 7.5 to find out the answer.

Number of outlets rewired in 1.5 hours = 4

Number of outlets rewired in 1 hour = $\dfrac{4}{1.5} = \dfrac{40}{15} = \dfrac{8}{3}$

Number of outlets rewired in 7.5 hours = $\dfrac{8}{3}\times 7.5 = \bold{20}$

So, 20 outlets can be rewired in 7.5 hours.

Answer from: Quest

region b will make the inequalities y < 2x + 1 and y > -x - 2 true ⇒ answer a

step-by-step explanation:

* lets study the graph and the inequality to solve the question

- the inequality y > -x - 2

∵ the form of the inequality is y > mx + c , m is the slope of the line

and c is the y-intercept (the line intersect y-axis at point (0 , c)

∴ c = -2 that means the line intersect the y-axis at point (0 , -2)

∵ the sign of the inequality is >

∴ we shad the part over the line

region a and b

- the inequality y < 2x + 1

∵ the form of the inequality is y > mx + c , m is the slope of the line

and c is the y-intercept (the line intersect y-axis at point (0 , c)

∴ c = 1 that means the line intersect the y-axis at point (0 , 1)

∵ the sign of the inequality is <

∴ we shad the part under the line

region b and c

∵ the common region between the two lines is region b

∴ region b will make the inequalities y < 2x + 1 and y > -x - 2 true

Bwill make the inequalities y < 2x + 1 and y> -x- 2 true. o a. region b o b. region c o c. r

Answer from: Quest

The answer is “faster”.

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Jamal works as an electrician's apprentice. He rewired 4 electrical outlets in 1 and one-halfhours....