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
krek1111 [17]
3 years ago
11

There were 80 boys and 95 girls on the middle school track team last year this year the number of boys increased by 15% well the

number of girls decreased by 20% was there an overall increase or decrease in the number of students on the track team calculate the overall percent of change in the number of students on the track team
A. 1% increase
B.4% increase
C.17.7% increase
D.1% decrease
E.4% decrease
F.17.7% decrease

Please help
Mathematics
1 answer:
shutvik [7]3 years ago
6 0

Answer:

E. 4% decrease

Step-by-step explanation:

To find out if we had an increase or a decrease, we will first need to set out variables.

80 boys

95 girls

So last year we had a total of:

80 + 95 = 175 Track team members

This year we had an increase in the number of boys.

15% boys or 0.15

Now since it's an increase, we add 1 to 0.15.

Total number of boys = 80 x (1.15)

Total number of boys = 92

Then we had a decrease in the number of girls.

20% girls or 0.20

Now we take the number of girls and multiply them by 0.20 and subtract the amount we get to the number of girls initially.

Total number of girls = 95 - (95 x 0.20)

Total number of girls = 95 - 19

Total number of girls = 76

So all together we have:

92 boys + 76 girls = 168

Now let's get the difference of the number of members last year and this year.

175 - 168 = 7

So we have 7 less members from last year.

Now we find how many percent 7 members is of 175 members.

Now we divide 7 by 175.

7 / 175 = 0.04

Then we multiply 0.04 by 100 to get the percentage value.

0.04 x 100 = 4%

So since we know that we have less than the initial number of members, then it means that it is a decrease.

So we had a 4% decrease in the number of members.

You might be interested in
Subject: Pre-algebra
charle [14.2K]

Answer:

1: true

2: false

Step-by-step explanation:

1: congruent = equal while supplementary = 180-degrees

2: congruent angles= vertical angles, corresponding angles, alternate interior angles, & alternate exterior angles

8 0
3 years ago
Read 2 more answers
a washer has an outside radius of 6cm and a hole of radius 28cm. calculate the area of the face of the washer ( give your answer
Cerrena [4.2K]

Answer:

the area of face of washer is 22cm sq

4 0
2 years ago
Please help me with this question! :
Anna11 [10]

Answer:

155 cm2

Step-by-step explanation:

3 x 4/2=6

6 x 2=12

5 x 11=55

55 x 2=110

3 x 11=33

12+110+33=155

I found the surface area of the triangular prism by calculating every side of the area and add it up.  

5 0
3 years ago
Read 2 more answers
I know it seems that alot of people like on here so people do their work but I really need help!!! I have a set of problems that
marshall27 [118]

Answer:

No Problem, I know That I personally can't stand it when people just give me the number. So another way to think of this problem is "How many 2/3 are in 3 cups." So try drawing 3 rectangles to represent 3 cups and then draw two lines inside those rectangles so that there are 3 rectangles inside each one and then shade in two of the smaller rectangles in a way that you can tell them all apart preferably different colors and then just count them.

Step-by-step explanation:

Hope this is enough to help you understand it, if not then feel free to ask for more info in the comments. :)

4 0
3 years ago
You must be at least 48 inches tall to ride an amusement park ride and your little sister is 39 inches tall.How many more inches
mafiozo [28]

Answer:

9 inches

Step-by-step explanation:

48-39

7 0
3 years ago
Read 2 more answers
Other questions:
  • Find the coordinates of the midpoint of a segment with the given endpoints W(-12, -7), T(-8, -4)
    5·2 answers
  • The temperature at 12 noon was 10 degree celsius. If it decreases at the rate of 2 degree celsius per hour until midnight, at wh
    7·1 answer
  • If the ratio of side lengths of similar polygons is 6:11, what is the ratio of perimeters
    6·1 answer
  • Is the sum of 3√2 and 4 √2 rational or irrational? Explain your answer.
    13·1 answer
  • A bank representative studies compound interest, so she can better serve customers. She analyses what happens when $2,000 earns
    13·1 answer
  • Find the value of x in the figure below. Assume that the lines are parallel
    9·1 answer
  • I just want to make sure or is it b?
    7·1 answer
  • 5x - (x - 16) = 2x - (_) + x)
    10·1 answer
  • Suppose G={−5,−3,0,3,5} and J={0,1,3,5,7}. Which set represents G∩J?
    6·2 answers
  • Hey! So I know the answer to this question… but I’m having trouble figuring out how to fill in the chart below
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!