MATHEMATICS MIDDLE SCHOOL

The measure of an angle is 39°. What is the measure of its complementary angle?

Answers

Answer 1
Answer:

Answer:

51

Step-by-step explanation:
Answer 2
Answer:

Answer:

51°

Step-by-step explanation:

90 - 39 = 51

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If I won 12 games and this was 60% of the games played. how many total games were there? Show your work

Answers

Answer:

20 games

Step-by-step explanation:

  • 60% is the same as (3)/(5).
  1. Divide 12 games by 3 to get one fifth of the total games instead of three fifths of the total games.  One fifth of the total games is four games.
  2. Now multiply the 4 games by 5 to get five fifths of the total games, or all of them.

60,000 is ???? Greater than 600

Answers

60,000 is 100 times greater than 600
100 times greater than 600

Are any of the places shown in the table closer than 1/2 mile to school

Answers


It's really hard to tell for anyone who can't see the table.
Sadly, you've left ALL of us in that awkward status.

Helena uses a mixture of compost and topsoil in her garden. She purchased a total of 10 cubic yards of compost and topsoil for $180. If compost costs $25 per cubic yard and topsoil costs $15 per cubic yard, how many cubic yards of topsoil did she purchase?A.)3
B.)4.5
C.)5.5
D.)7

Answers

Answer:

7 cubic yard

Step-by-step explanation:

Let the compost purchased be x cubic yard

And the topsoil purchased be y cubic yard

Hence

x+y=10 ----(A)

Also

Cost incurred in buying compost at a rate of $25 per cubic yards = 25x

Cost incurred in buying topsoil at a rate of $15 per cubic yards = 15y

Total cost incurred = 25x+15y=180

Diving whole equation by 5 we get

5x+3y=36 ----(B)

Multiply A by 3 and subtract it from B

5x+3y=36

- - -

3x+3y=30

_______

2x=6

x=3

Putting this value in A

x+y=10

3+y=10

y=10-3=7

Hence she purchased 7 cubic yards of topsoil.

Answer:

to make it short, its D

Step-by-step explanation:

got it right on Edge

The area of a rectangle is 4.9 square units. The length is 2.5 units and the width is y units. Which statements are true? Select each correct answer. A. 2.5y=4.9 B. y=1.96 C. 4.9x=2.5 D. y=12.25

Answers

The answer is A because the area is all the points added together so you need to times it by Y and you get the area which is 4.9
A and B. A is xy=A (4.9) : 2.5*y=4.9 and B is A/x=y so 4,9/2,5=1,96 which is correct

There is a population of 500 bacteria in a colony. If the number of bacteria doubles every 47 hrs , what will the population be 94 hrs from now?

Answers

doubling formula
F=P(2)^(t/d)
F=furte amount
P=present amount
t=time elapsed
d=doubling time

F=500(2)^(94/47)
F=500(2)^2
F=500(4)
F=2000

2000 is pop
I believe that the answer would be 2,000 because 97 divided by 2 is 47 so 500 • 2 = 1,000 • 2 = 2,000
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