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bulgar [2K]
4 years ago
9

Three students can wash a car in 16 minutes. If the varies inversely with the number of students washing the car, how many minut

es will it take two students to complete that same job?
Mathematics
1 answer:
aleksley [76]4 years ago
4 0

Answer:

Two students will take 24 minutes to wash the car.

Step-by-step explanation:

In this case we can apply a rule of three to find out the time that will take for the students to wash the car. This has to be done such as:

3 students -> 16 minutes

2 students -> x minutes

3/2 = 16/x

But in this cases the problem states that this variables are inversely proportionate, which means that if there's less students washing the car they will take more time to finish the job. So we need to invert one of the fractions before computing the result.

3/2 = x/16

2*x = 3*16

x = 48/2 = 24 minutes.

Two students will take 24 minutes to wash the car.

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Jason rowed 1/3 of a mile down the river.Jane rowed 2/6 of a mile down the river. Jude rowed 2/9 of a mile down the river.What i
seraphim [82]

Answer:

8 / 9 miles

Step-by-step explanation:

Given that:

Jason's distance = 1/3 mile

Jane's distance = 2/6 miles

Jude's distance = 2/9 miles

The total miles rowed down the river by all 3 :

(1/3 + 2/6 + 2/9) miles

The L. C. M of the denominator (3, 6, 9) = 18

(6 + 6 + 4) / 18

16 / 18 miles

8 / 9 miles

4 0
3 years ago
LaTanya says that the growth factor of f(x) = 100(1.25) is 25%. What mistake did LaTanya make?
vladimir2022 [97]

Answer:

The first error consists in the multiplication of f (x) = 100 * (1.25), the value she mentions is incorrect since it is 125.

It would be a 125% increase really.

In order for LaTanya's phrase to have no error she had to mention that it was a 25% increase over the original amount, in this way, the phrase would make sense and be valid.

3 0
3 years ago
You fill a 100 mL graduated cylinder with 38.5 mL of water. What is the volume?
larisa [96]

Answer:

38.5cm³

Step-by-step explanation:

1ml = 1cm³

38.5ml = 38.5cm³

7 0
3 years ago
CAN SOMEONE PLEASE HELP ME THIS IS DUE SOON!!
finlep [7]

Answer:

95 ft²

Step-by-step explanation:

Given:

regular pyramid with,

Square base of side length (s) = 5 ft

Slant height (l) = 7 ft

Required:

Surface area

Solution:

Surface area of a regular pyramid = ½*P*l + B

Where,

P = perimeter of the square base = 4(s) = 4(5) = 20 ft

l = slant height = 7 ft

B = area of base = s² = 5² = 25 ft²

Surface area = ½*20*7 + 25

= 10*7 + 25

= 70 + 25

Surface area of regular pyramid = 95 ft²

4 0
3 years ago
A right triangle has an area of 33mm and a height of 11mm how long is the base of the triangle​
Arlecino [84]

Answer:

6mm

Step-by-step explanation:

7 0
3 years ago
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