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Elena-2011 [213]
4 years ago
15

If an experienced surveyor can survey a roadbed in 7 hours and an apprentice surveyor needs 10 hours, how long will it take them

to complete the job together
Mathematics
1 answer:
natulia [17]4 years ago
7 0
Experienced: I hour, 1/7 done
apprentice: 1 hour, 1/10 done

together: 1 hour, 10/70 + 7/70 = 17/70 done
Therefore...
1 / 17/70 = 4.1176 hours (70/17 hours)
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PLZ ANSWER THIS QUICK !!!!!! You have two objects made of metals that have the same mass. Object one has a density of 8 g/cm^3 a
Anna [14]

Answer:

i think the answer should be answer

Step-by-step explanation:

6 0
4 years ago
Given the following information, find the probability that a randomly selected dog will be a golden retriever or a poodle. Numbe
Flauer [41]

Answer: a) 39.5%

Step-by-step explanation:

<em>For random selections, we assume that all the dogs have the same probability of being selected.</em>

In this case, the probability will be equal to the number of golden retrievers divided the total number of dogs.

We have 58 golden retrievers, and the total number of dogs is:

31 + 58 +20 + 38 = 147

Then the probability is:

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If we multiply it by 100%, we obtain the percentage form:

0.395*100% = 39.5%

So the correct option is a.

6 0
3 years ago
The rate at which a plant grows is constant. At the 3rd week it is 12 inches tall and at the 5th week it is 20 inches tall. If t
Arada [10]
First, you want to find the slope of the line. You do this by taking the difference in the heights divided by the difference of the time.
m=(20-12)/(5-3)
m=8/2
m=4
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y=mx+b
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So our final equation is:
y=4x
The question is asking for y when x is 1, so just plug it into the equation:
y=4(1)
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Hope this helps!
7 0
3 years ago
Read 2 more answers
Dilate line f by a scale factor of 3 with the center of dilation at the origin to create line f'. Where are points A' and B' loc
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Answer:

Step-by-step explanation:

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8 0
3 years ago
A marble factory makes single marbles, then puts them in boxes of 10, cartons of 100, and crates of 1,000. How can the marble fa
Tju [1.3M]

Given, a marble factory makes single marbles and then puts them in boxes of 10, cartons of 100 and crates of 1000.

There are 21,650 marbles. We have to find how many boxes, cartons and crates are there.

We have to write 21,650 in the form of 1000, 100 and 10.

We can write 21,650 in the form of 1000 as, (21)(1000) = 21000

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We can write 650 in the form of 100 as, (6)(100) = 600

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We have got the required answer here.

3 0
3 years ago
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