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Paladinen [302]
3 years ago
9

At a school, 4 out of every 7

Mathematics
2 answers:
Slav-nsk [51]3 years ago
8 0
Answer: 60
explanation:you need to find 4/7 of 105. 1/7(105/7) =15
15x4=60
luda_lava [24]3 years ago
5 0

Answer:

60 girls play sports

Step-by-step explanation:

#1- divide 105 by 7=15

#2- multiply 4 by 5= 60

therefore 60 of the 105 girls play sports

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What would the coordinates (4,9) become with a 400% dilation
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3 years ago
PLEASE help
astraxan [27]

Answer:

The percentage of people should be seen by the doctor between 13 and

17 minutes is 68% ⇒ 2nd term

Step-by-step explanation:

* Lets explain how to solve the problem

- Wait times at a doctor's office are typically 15 minutes, with a standard

 deviation of 2 minutes

- We want to find the  percentage of people should be seen by the

 doctor between 13 and 17 minutes

* To find the percentage we will find z-score

∵ The rule the z-score is z = (x - μ)/σ , where

# x is the score

# μ is the mean

# σ is the standard deviation

∵ The mean is 15 minutes and standard deviation is 2 minutes

∴ μ = 15 , σ = 2

∵ The people should be seen by the doctor between 13 and

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∵ x = 13 and 17

∴ z = \frac{13-15}{2}=\frac{-2}{2}=-1

∴ z = \frac{17-15}{2}=\frac{2}{2}=1

- Lets use the standard normal distribution table

∵ P(z > -1) = 0.15866

∵ P(z < 1) = 0.84134

∴ P(-1 < z < 1) = 0.84134 - 0.15866 = 0.68268 ≅ 0.68

∵ P(13 < x < 17) = P(-1 < z < 1)

∴ P(13 < x < 17) = 0.68 × 100% = 68%

* The percentage of people should be seen by the doctor between

  13 and 17 minutes is 68%

6 0
2 years ago
The population Of a town in Utah in 1997 was 6000. After two years the population of the town was 145% of the 1997 population. W
zalisa [80]

Answer:

c 8700

Step-by-step explanation:

7 0
3 years ago
2.7 (7.8)??? I don't know how to work this problem...
ruslelena [56]
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8 0
3 years ago
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I need help figuring out the first step would it be adding up the like terms? help
Pie

Answer: Add like terms

Step-by-step explanation:

For example, you would add 6x and 5x to make 11x, but there other two numbers you would leave alone.

6 0
2 years ago
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