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3 years ago

The time, t, required to complete a job

Mathematics

1 answer:

tigry1 [53]3 years ago

3 0

Answer:

19 hrs

Step-by-step explanation:

t varies inversely with number of people p

t = k/p

If it takes 7.125 hrs for 8 workers to do the job

K = tp

= 7. 125 x 8

= 57

How many hours will it take if there are 3 workers .

Recall t = k/p

t = 57/3

= 19 hrs

Therefore, It’ll take 19 hrs to Complete the job if there are only three workers.

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Fill in the blank to make the fractions equivalent 2/3 = Blank/15

kotegsom [21]

Answer: 2/3 = 10/15

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3 years ago

Find the product, write using<br> positive exponents.<br> x-6 • x-2

Lelu [443]

Answer:

(2x)X-12

Step-by-step explanation:

x-6.x-2

4 0

4 years ago

Read 2 more answers

Need help (pic included)

ValentinkaMS [17]

Answer:

(-4,-2)

x=-4

y=-2

Step-by-step explanation:

-3x-4y=20

3(x-10y=16)=3x-30y=48

The reason I multiplied 3 to the second equation is for when we add the equations together the x will cancel out.

-3x-4y=20

+ <u>3x-30y=48</u>

-34y=68

Divide -34 from both sides.

y=-2

To find x you need to plug in -2 for y into one of the equations.

x-10y=16

x-10(-2)=16

Remember a negative times a negative equals a positive.

x+20=16

Subtract 20 from both sides.

x=-4

Hope this helps!

If not, I am sorry.

4 0

2 years ago

The diameter of a meteorite in millimeters is calculated by four different methods. Order the results from least to greatest. Ex

grandymaker [24]

Answer:

√18, 13/3, 4.6, 4π

Step-by-step explanation:

joe = √18 = 4.24 mm

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8 0

3 years ago

Lockheed Martin, the defense contractor designs and build communication satellite systems to be used by the U.S. military. Becau

Nana76 [90]

Answer:

$P(52$

And we can find this probability with this difference:

$P(-0.851$

And if we use the normal standard distribution or excel we got:

$P(-0.851$

Step-by-step explanation:

Let X the random variable that represent the time required to construct and test a particular component of a population, and for this case we know the distribution for X is given by:

$X \sim N(60,9.4)$

Where $\mu=60$ and $\sigma=9.4$

We want to find this probability:

$P(52$

And the best way to solve this problem is using the normal standard distribution and the z score given by:

$z=\frac{x-\mu}{\sigma}$

Using this formula we got:

$P(52$

And we can find this probability with this difference:

$P(-0.851$

And if we use the normal standard distribution or excel we got:

$P(-0.851$

5 0

3 years ago