Ask question

Ask question

All categories

3 years ago

10

52% of the students are girls. 50% of the girls and 25% of the boys travel to school by bus. what percentage of the whole school

travel by bus

1 answer:

vova2212 [387]3 years ago

8 0

38%

50% of 52% is 26%
If 52% of the school is girls then 48% of the school is boys
25% of 48% is 12%
26% + 12% is 38%

You might be interested in

I need help please will give you 5 stars and good rating

Brums [2.3K]

Answer:

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

A vending machine that serves coffee pours a varying amount of liquid into a cup with varying mass. Assume

bonufazy [111]

Answer:400

Step-by-step explanation:

7 0

2 years ago

The population mean annual salary for environmental compliance specialists is about $62,000. A random sample of 32 specialists

lakkis [162]

Answer: 0.002718

Step-by-step explanation:

Given : The population mean annual salary for environmental compliance specialists is about $62,000.

i.e. $\mu=62000$

Sample size : n= 32

$\sigma=6200$

Let x be the random variable that represents the annual salary for environmental compliance specialists.

Using formula $z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}$ , the z-value corresponds to x= 59000 will be :

$z=\dfrac{59000-62000}{\dfrac{6200}{\sqrt{32}}}\approx\dfrac{-3000}{\dfrac{6200}{5.6568}}=-2.73716129032\approx-2.78$

Now, by using the standard normal z-table , the probability that the mean salary of the sample is less than $59,000 :-

$P(z$

Hence, the probability that the mean salary of the sample is less than $59,000= 0.002718

3 0

3 years ago

The arm of a steel crane is 62 feet long. When it is fully extended, the crane arm forms a 30 degree angle with a line parallel

yuradex [85]

Answer: The top of the Crane is 31 feet above the ground.

Step-by-step explanation:

When it is fully extended, the crane arm forms a 30 degree angle with a line parallel to the ground. This means that a right angle triangle is formed. The length of the Crane's arm represents the hypotenuse. The horizontal distance represents the adjacent side of the right angle triangle. The distance, h of the top of the Crane from the ground represents the opposite side of the right angle triangle.

To determine h, we would apply

the Sine trigonometric ratio.

Sin θ, = opposite side/hypotenuse. Therefore,

Sin 30 = h/62

h = 62Sin30

h = 62 × 0.5

h = 31 feet

3 0

2 years ago

What’s the answer to this?

Serga [27]

Answer:47m

Step-by-step explanation:

8 0

1 year ago