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
kenny6666 [7]
3 years ago
7

A ball pit at a play area is filled with red and yellow balls. Of the total number of balls 60 percent are red. If there are 720

red balls, how many balls are in the ball pit?
Mathematics
1 answer:
ser-zykov [4K]3 years ago
3 0
To solve this we'll put the question in this format: x% of y things = z things

We have the percent so we'll put in 60 for x.
Now the total number of balls will be considered y since we have the number of red balls but not blue ones. so we end up having..

60% of y balls = 720 balls

Of is another word for multiplication, therefore:

60/100*y=720
Solve for y
y=1200

So we have 1200 balls
You might be interested in
Mckenna collects pokemon cards and had 318 in her collection. She decided to give some to her younger brother so that he can beg
Andreas93 [3]

Answer: it’s D

Step-by-step explanation: trust me

4 0
3 years ago
A square family room has an area of 100 square meters. How long is each side?​
FromTheMoon [43]

Answer:

<em>Each side is 10 meters</em>

Step-by-step explanation:

Because since area is length times width, you would do 10x10 which is 100

4 0
3 years ago
Read 2 more answers
What is the area ? Plz answer fast
snow_tiger [21]
B or C I’m not sure but good luck!!!
6 0
2 years ago
We have two varieties of concrete that we can mix together. One is 5% water and 95% concrete mix, and the other is 20% water and
Orlov [11]

Answers:

  • <u>20 pounds</u> of the 95% concrete mix
  • <u>10 pounds</u> of the 80% concrete mix

=================================================

Explanation:

x = amount of the 95% concrete mix

y = amount of the 80% concrete mix

Type A mix has 95% concrete. If we have x pounds of this, then 0.95x pounds is pure concrete. Type B mix has 80% concrete. If there are y pounds of this, then 0.80y pounds is pure concrete.

So far we have 0.95x+0.80y pounds of pure concrete from the two mixes

Divide this over 30 to get (0.95x+0.80y)/30

Setting this equal to 0.90 means we want the final mix to be 90% concrete.

Since we want 30 pounds total, we can say x+y = 30 which solves to y = 30-x. We'll use this later

-------------------------------

(0.95x+0.80y)/30 = 0.90

0.95x+0.80y = 30*0.90 .... multiply both sides by 30

0.95x+0.80y = 27

0.95x+0.80(30-x) = 27 ..... plug in y = 30-x

0.95x+0.80*30-0.80*x = 27

0.95x+24-0.80x = 27

0.15x+24 = 27

0.15x = 27-24 ..... subtracting 24 from both sides

0.15x = 3

x = 3/0.15 ........... dividing both sides by 0.15

x = 20

y = 30-x

y = 30-20

y = 10

5 0
3 years ago
Calculate the volume of this cone.
ozzi

Answer:

153.9

\pi(9.8)(5)

3 0
3 years ago
Other questions:
  • .help me please thanks
    15·1 answer
  • A pitcher of fruit punch holds 2 gallons. If 9 people share the entire pitcher equally, how much pitcher does each person get?
    9·2 answers
  • Solve the system of equations.<br><br><br> {y=x−6<br> {3x+2y=8<br><br> Use the substitution method.
    5·1 answer
  • Order of operations-<br>I'm not sure what the order is, please help.​
    10·2 answers
  • Explain how to use a cordinate plane to find the area of a rectangle with vertices (-4,9) (-4-3) (-1,-3) and(-1,9) . What is the
    5·1 answer
  • Please help! 20 points!
    9·2 answers
  • I need help please?!!!!
    7·1 answer
  • Unit cube:
    10·1 answer
  • ____________________
    10·1 answer
  • In triangle △ABC, ∠C is a right angle and CD is the altitude to AB. Find the angles in △CBD and △CAD if m∠A = 65°
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!