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
Levart [38]
3 years ago
15

I NEED HELP ASAP PLEASE!! ;)

Mathematics
1 answer:
Zigmanuir [339]3 years ago
6 0

Answer:

7 inches

Step-by-step explanation:

First you have to find the average height of each class.

4th Grade:

56, 47, 54, 51, 53, 58, 48, 54, 46, 53

Then you have add it all up and divide it by how many students there are.

56 + 47 + 54 + 51 + 53 + 58 + 48 + 54 + 46 + 53 = 520

520 ➗10= 52

Same process for the 7th Grade.

You end up getting 52 and 59. You then Subtract it to get the answer to the question.

52 - 59= 7 inches

You might be interested in
Test scores in a Test were normally distributed with a mean of 75 and a standard deviation of 10. Carl scored 90 in the Test . W
mylen [45]

Answer:

Z-score = 1.5

Step-by-step explanation:

Z-score = (x-mean)/standard deviation

= (90-75)/10

= 1.5

6 0
3 years ago
9 out of the 25 items are made of glass. what percent of the cookware items are glass.
NeTakaya

\frac{9}{25}  \times 100 = 36\%
Here is your answer!
5 0
3 years ago
Read 2 more answers
Grains of sand are very small, there being about 3000 grains in one cubic centimeter (cm3) of sand. A cm3 is a small cube measur
Anastasy [175]

Answer:

The value is x =  3.000 * 10^9 \  grains

Step-by-step explanation:

From the question we are told that

      1m^3 = 10^6 cm^3

And that

     3000 \  grains \ of \  sand  \  is  \ in \  1cm^3

So the number of sand grain that is in 1m^3 is mathematically evaluated as

      x =  3000 * 10^6 \  grains

=>  x =  3.000 * 10^9 \  grains

4 0
3 years ago
An Urn contains two white marbles and one black marble. A marble is drawn from the Urn without replacement and put aside without
algol [13]

Answer:

Step-by-step explanation:

No. Of white marble n(W) = 2

No. Of black marble n(B) = 1

Total no. Of marble N = 2 + 1 = 3

Prob(1st is white) = n(W)/N = 2/3

Prob(1st is black) = n(B)/N = 1/3

4 0
3 years ago
P L E A S E A N S W E R
Pavlova-9 [17]

Answer:

7-8

Step-by-step explanation:

5 0
2 years ago
Other questions:
  • Please tell me if it 1 2 3 4 or 5
    14·1 answer
  • What is the definition of a diameter
    6·2 answers
  • Help please guys I need help
    14·1 answer
  • Please help! Write the slope-intercept form of the equation for the line.
    10·1 answer
  • - Paula's time swimming in the Ironman Triathlon was 1 hour 25 minutes. Her time biking was 5
    5·1 answer
  • each of the numbers from 1 to 50 is written on a tile and the tiles are placed upside down on the top of the table. if a tile is
    6·1 answer
  • Simplify cos(2x)/ cos(x)-sin(x)
    8·1 answer
  • (2x+1)(x-1)=0 <br>2x-10=5+3x​
    9·2 answers
  • V/5=9<br><br> What is v? One step equations
    11·2 answers
  • Solve and simplify 6 2/3 x 3 1 /2
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!