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KonstantinChe [14]
3 years ago
5

5 children are playing on a trampoline.

Mathematics
1 answer:
Blizzard [7]3 years ago
4 0

Answer:

29

Step-by-step explanation:

The mean weight is the average

(x1+x2+x3+x4+x5)/5 = 28

Multiply by 5

(x1+x2+x3+x4+x5) =140

The total weight of the 5 children is 140

(x1+x2)/2 =26.5

Multiply by 2

(x1+x2)/2*2 =26.5*2

(x1+x2) =53

The total weight of the two children is 53

140-53 =87

The three children weigh 87

Divide by 3 to find the mean weight

(x3+x4+x5)/3 = 87/3

mean weight = 29

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A worker at a mill is loading 10-lb bags of flour into boxes to deliver to a local warehouse. Each box holds 4 bags of flour. If
Hunter-Best [27]

Answer: 100 boxes

Step-by-step explanation:

Hi, since 1 ton = 2,000 lbs

We have to divide 10lbs by 2000 to convert the lbs in tons.

1t/2000lb = xt / 10lb

10 /2000=0.005

0.005 ton = 10 lbs (1 bag)

Each box has 4 bags

0.005 ton x 4 = 0.02 ton

So each box weights 0.02 ton

Since we need 2 tons.

Using proportions:

0.02t/1 box= 2 t / x boxes

x = 2 / (0.02/1)

x = 100 boxes  

Feel free to ask for more if needed or if you did not understand something.

4 0
3 years ago
In 1980, in Great Falls, Montana, the temperature rose from 32 °F to 15 °F in seven minutes. How much did the temperature increa
Gnom [1K]
17 degrees Fahrenheit
8 0
3 years ago
In the figure, VW || YZ. Find the value of x, and the measure of YA and WA.
svetoff [14.1K]

Step-by-step explanation:

because VW || YZ, the 2 triangles are similar.

this is given by the rules of equal angles of intersecting lines with parallel lines. Z to V and Y to W would be such intersecting lines.

and therefore, the angle at W is the angle at Y, the angle at V is the angle at Z. and therefore both angles at A are equal.

so, for similar triangles the scaling factor between corresponding pairs of sides is the same for all sides.

e.g. the same scaling factor that converts 7.2 to 12, converts then also x to x+4.

7.2 × f = 12

f = 12/7.2 = 12/ 72/10 = 120/72 = 10/6 = 5/3

x × 5/3 = x + 4

5x = 3x + 12

2x = 12

x = 6

A to Y = x = 6

W to A = x + 4 = 6 + 4 = 10

5 0
2 years ago
Please help me please answer it correctly
Kruka [31]

Answer:

$1,150

Step-by-step explanation:

<u>Step 1:  Find the total new members</u>

40 - 10

30 new members

<u>Step 2:  Add them to the total</u>

30 + 200

230 total members

<u>Step 3:  Find the money earned</u>

230 * 5

$1,150

Answer:  $1,150

8 0
3 years ago
A regular pentagon has side lengths of 10 cm and an
Fittoniya [83]

Answer: 172 square centimeters.

Step-by-step explanation:

Hi, to answer this question we have to apply the next formula:

Area of a pentagon (A) = 1/2× 5s × a

Where:

s : side of the pentagon

a: apothem

Replacing with the values given and solving for A (area):

A =1/2 x (5 x10) x 6.88

A = 172 square centimeters.

Feel free to ask for more if needed or if you did not understand something.

7 0
2 years ago
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