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
anygoal [31]
3 years ago
12

The school band is comprised of middle school students and high school students, but it always has the same maximum capacity. La

st year the ratio of the number of middle school students to the number of high school students was 1:8. However, this year the ratio of the number of middle school students to the number of high school students changed to 2:7. If there are 18 middle school students in the band this year, how many fewer high school students are in the band this year compared to last year?
Mathematics
1 answer:
alexandr1967 [171]3 years ago
6 0
> Last year the ratio of the number of middle school students
> to the number of high school students was 1:8.
1/9 x + 8/9 x = makeup of middle and high school students

> this year the ratio ... changed to 2:7
2/9 x + 7/9 x = x (again)

> there are 18 middle school students in the band this year
2/9 x = 18
2x = 9 * 18 → x = 81

Total = 81 in band ...
Last year:
1/9 and 8/9 = 9 and 72
This year
2/9 and 7/9 = 18 and 63

And from there you can figure out the changes:
+9 for middle school (which is increase from 1/9 to 2/9)
--9 for high school (which is decrease from 8/9 to 7/9)
You might be interested in
Which equations are true?<br> Choose All Answers That Apply (10 Points)
Nataly [62]

Answer:

B

Step-by-step explanation:

Two negatives is a positive, and you want your outcome to be a positive x, therefore b is the correct answer.

3 0
3 years ago
Read 2 more answers
What is 93 x 78 + 69 - 420<br> Can you sub to me!
slava [35]

Answer:

6903

Step-by-step explanation:

Yes sure

3 0
3 years ago
Read 2 more answers
Evaluate: \frac{23}{56} + \frac{3}{8} - ( - \frac{4}{28} )
MrMuchimi
I think this is what you mean. I don't know why the Latex didn't work. Good for you that you can use it.

\frac{23}{56} +  \frac{3}{8} - \frac{-4}{28}
\frac{23}{56} + \frac{3}{8} - \frac{-4}{28} Reduce the 4/28 to 1/7
\frac{23}{56} + \frac{3}{8} - \frac{-1}{7} Make the 2 minuses into a +
\frac{23}{56} + \frac{3}{8} + \frac{1}{7} 56 is the common denominator.
\frac{23}{56} + \frac{21}{56} + \frac{8}{56}

Answer = [23 + 21 + 8] / 56 = 52 / 56 = 13 / 14 When both numerator and denominator are divided by 4

13 / 14 <<<< answer.
5 0
2 years ago
Find the x-intercepts of the following parabola. y = -4x2 + 8x + 12
Marta_Voda [28]
B. is the answer dude
3 0
2 years ago
Read 2 more answers
Match the number on the left with the proper combination of number types on the right.
mojhsa [17]
A: REAL, RATIONAL, INTERGER, WHOLE, NATURAL, OR COUNTING
6 0
2 years ago
Other questions:
  • Describe the congruence transformation that maps quadrilateral ABCD to quadrilateral A'B'C'D'.
    9·1 answer
  • 7/8 teaspoons is 1/4 groups of what size
    6·1 answer
  • 1. Write the equation for the function graphed<br> below.<br> -10<br> -5<br> 10
    13·1 answer
  • 15 POINTS!! 5 STAR RATING!! THANKS ON QUESTION AND PROFILE!! FIRST ANSWER GETS THE BRAINLIEST!!
    15·1 answer
  • What is the solution of <br> X-2/x-3&lt;4
    7·2 answers
  • Examine parallelogram ABCD below.
    8·1 answer
  • A wire 24 inches long is to be cut into four pieces to form a rectangle with one side of length x. Write the area A of the recta
    6·1 answer
  • Use suitable transformation on <img src="https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%262%5C%5C3%264%5Cend%7B
    13·1 answer
  • The height of two plants is in the ratio 7 : 9. The height if the taller plant is 26cm more than the height of the shorter plant
    8·1 answer
  • Rashon has a dimes and y nickels. He has no less than 12 coins worth at most $0.95
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!