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steposvetlana [31]
3 years ago
12

There is 15 girls and 25 boys in a science club . what percent of the members are girls?

Mathematics
1 answer:
dlinn [17]3 years ago
7 0

Answer:

Step-by-step explanation:

Total member = 25 + 15 = 40

girls percentage = \frac{15}{40}*100\\\\=\frac{15}{2}*5\\\\=\frac{75}{2}=37.5\\

= 37.5%

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What is the mean absolute deviation of the set of numbers {3, 7, 5, 6, 4}?
scoundrel [369]

Answer:

5

Step-by-step explanation:

mean = sum of all values÷number of observation

= 3+7+5+6+4 ÷ 5

= 5

6 0
3 years ago
David is making a wall out of bricks. Each brick is 2/3 foot long. There are 20 bricks lined up end to end to make the wall. Wha
Law Incorporation [45]

The total length of wall is 160 inches

<em><u>Solution:</u></em>

Given that,

Length\ of\ each\ brick = \frac{2}{3}\ foot

1 feet = 12 inches

Therefore,

Length\ of\ each\ brick = \frac{2}{3} \times 12\ inches = 8\ inches

There are 20 bricks lined up end to end to make the wall

<em><u>To find: Total length of wall in inches</u></em>

Total\ length\ of\ wall = \text{length of each brick } \times \text{ total number of bricks}

Thus we get,

Total\ length\ of\ wall = 8 \times 20\\\\Total\ length\ of\ wall = 160\ inches

Thus total length of wall is 160 inches

8 0
3 years ago
Help!! What is arc HLK? Thankyou!
Bezzdna [24]

We know Angle HMK is half the sum of Arc JI and Arc HLK. So, we can set up an equation.

8x - 1 = 1/2 (3x + 2 + 15x - 36)

8x - 1 = 1/2 (18x - 34)

16x - 2 = 18x - 34

32 = 2x

16 = x

Then, we can substitute x into Arc HLK

HLK = 15x - 36

HLK = 240 - 36

Arc HLK = 204°

5 0
3 years ago
Jona and his friend go apple picking .jonah fills 5 basket.each basket holds 15apples . If 4 of jonah's friend pick the same amo
k0ka [10]
5 baskets...each holds 15 apples....(5 x 15) = 75 apples

4 friends pick the same amount...
4 x 75 = 300 apples picked in total. <==
5 0
3 years ago
Read 2 more answers
A swimming pool has a diameter of 24 feet. What is the minimum amount of fabric needed to cover the pool if the cover must hang
Alika [10]

Answer:

531.167 ft²

Step-by-step explanation:

Given data

Dimension of pool

Diameter =24ft

Radius =12ft

If the cover must hang by 1ft around, then the diameter is 26ft

Radius =13ft

Area of cover = πr²

Substitute

Area = 3.142*13²

Area =3.143*169

Area =531.167 ft²

Hence the minimum area is 531.167 ft²

5 0
3 years ago
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