1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
irina [24]
3 years ago
9

This is the ASVAB question If 500 people are at a concert and 70% are adults. How many children are there?

Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
3 0

Answer:

150

Step-by-step explanation:

70% of 500 people are adults and the remainder are children.

  • 30% of 500 are children
  • 30*500/100= 150

There are 150 children

You might be interested in
How long will it take to fill the pool if two hoses are used, one that fills at a rate of 40 gallons per hour and one that fills
jok3333 [9.3K]
One data is missing. You need the volume of the pool or some data that permit you to calculate this volume.

The same statement given by you is part of a problem where you know a series of data that shows the time required to fill the pool at different flow rates:

flow rate              time
60 gal/h               300 h => 60 gal/h * 300 h = 18,000 gal
45 gal/h               400 h => 45 gal/h * 400 h = 18,000 gal
36 gal/h               500 h => 36 gal/h * 500 h = 18,000 gal
30 gal/h               600 h => 30 gal/h * 600 h = 18,000 gal


So for, this pool to calculated (several times) that the volume is 18,000 gal.

Now you have two hoses one with a flow rate of 40 gal / h and the other with a  flow rate of 60 gal/h.

The total flow rate is the sum of the two flow rates"

total flow rate = 40 gal/h + 60 gal/h = 100 gal/h

And you just must divide the volume of the pool (18,000 gal) by the total flow rate (100 gal/h) to get the time to fill the pool:

time = volume / flow rate = 18,000 gal / 100 gal/h = 180 h.

Answer: 180h
5 0
4 years ago
Which equation can be used to find the volume of this solid?
bogdanovich [222]

Answer:

V= 2 times 4 times 5

Step-by-step explanation:

In order to calculate the volume of a figure u must calculate lwh or length times width times height. In this case length is 5 width is 4 and height is 2. This can be plugged in and becomes 2 times 4 times 5.

6 0
3 years ago
Read 2 more answers
What is statistical power and how would you calculate it?
Natasha_Volkova [10]

Answer:

The statistical power of a hypothesis test is the probability of detecting an effect, if there is a true effect present to detect. Power can be calculated and reported for a completed experiment to comment on the confidence one might have in the conclusions drawn from the results of the study.

I hope it's helpful!

3 0
3 years ago
Two produce stores sell watermelon by the pound
Lunna [17]
Whats the question tell me and i'll try to help
3 0
3 years ago
Pls help urgent
tangare [24]
It's just asking for the gradient basically
150/3 = 50
Or technically -50 because it's decreasing
7 0
3 years ago
Other questions:
  • What three points do i graph? <br><br> y= -2x
    15·1 answer
  • Which bank costs less for the feature or service?
    13·1 answer
  • A marketing consultant observed 50 consecutive shoppers at a supermarket. One variable of interest was how much each shopper spe
    14·1 answer
  • Rectangle TUVW is on a coordinate plane at T (a,b),U(a+2,b+2),V(a+5,b-1), and W (a+3,b-3). What is the slope of the line that is
    14·1 answer
  • The sum of a number and 6
    9·1 answer
  • What does the set of points on any line correspond to?
    5·1 answer
  • Find the discriminant of 3x2 - 10X=-2.
    7·2 answers
  • a pet store wants to know what is people's favorite animal. the store places survey cards at a table for customers to fill out w
    5·1 answer
  • Geometry - Triangle d) In the given figure, BE = EC and CE is the bisector of ZACB. Prove that ZBEC = ZACD. E B D С​
    8·1 answer
  • You want to obtain a sample to estimate a population proportion. at this point in time, you have no reasonable estimate for the
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!