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Sidana [21]
3 years ago
8

Raul and his friends, each of whom weighs 1/20 of a ton, are standing on a truck scale. The total weight shown by the scale is 3

/4. How can you find the total number of people on the scale when raul and his friends are weighed?
Mathematics
1 answer:
ivann1987 [24]3 years ago
8 0

Answer:

There are 15 friends

Step-by-step explanation:

The rule of three or is a way of solving problems of proportionality between three known values and an unknown value, establishing a relationship of proportionality between all of them. That is, what is intended with it is to find the fourth term of a proportion knowing the other three.

If the relationship between the magnitudes is direct, that is, when one magnitude increases, so does the other (or when one magnitude decreases, so does the other) in the same proportion, the rule of three applies as follows:

a ⇒ b

c ⇒ x

Then: x=\frac{c*b}{a}

where a, b and c are known values ​​and x is the value to be calculated.

In this case, the rule of three applies as follows: if 1/20 of a ton is the weight of 1 person, 3/4 of a ton is the weight of how many people?

number of people =\frac{\frac{3}{4} of a ton*1 person }{\frac{1}{20} of a ton}

or, what is the same,

number of people* \frac{1}{20} = \frac{3}{4}

Solving:

number of people= 15

<u><em>There are 15 friends</em></u>

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3 years ago
Bobby and his family went to the playground. The slide is 13
Nonamiya [84]

Answer:

it would be close to 12 ft im not 100% sure though the measurements are a little off

Step-by-step explanation:

hypotenuse is 13

then you have the adjacent = 7

13^2 = 169

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169-49=120

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brainliest, please???

4 0
3 years ago
<img src="https://tex.z-dn.net/?f=3%20%5Cfrac%7B3%7D%7B4%7D%20%20%5Ctimes%20%5Cfrac%7B2%7D%7B5%7D%20" id="TexFormula1" title="3
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Answer:

1 1/2

Step-by-step explanation:

8 0
3 years ago
Dianna and Becky were playing on the same soccer team and took turns being goalie. They stoped 9 out of 10 shots made against th
vitfil [10]

Answer:

27 balls

Step-by-step explanation:

If Dianna and Becky stopped 9 out of 10 shots made against them.

It means they allowed in 1 out of 10 shots made against them.

This is best solved using ratios

Proportion of Shots Stopped : Proportion of Shots allowed=9:1

If the other team scores 3 points, it means the number of shots allowed =3

Let x be the number of shots stopped

Number of Shots Stopped : Number of Shots allowed=x:3

Therefore:

9:1=x:3

\frac{9}{1}=\frac{x}{3}

Cross multiplying

x=9 X 3 =27

Dianna and Becky stopped 27 balls from going into the net,

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