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
jenyasd209 [6]
3 years ago
11

81 is 37.5% of what number

Mathematics
1 answer:
aksik [14]3 years ago
6 0
37.5% of n is 81
0.375n=81
n=216
You might be interested in
What is a solution to x ≥ 20
Triss [41]

Answer:

Step-by-step explanation:

Any number equal to or greater than 20 is a solution.  22 would be a solution.

4 0
3 years ago
The following figures are not drawn to scale but AB and CD are straight lines.<br> Find x.
leonid [27]
Answer:

x = 30

Step-by-step explanation:

2x + 90° + x = 180°

3x + 90° = 180°

3x = 90°

x = 90/3

x = 30
7 0
2 years ago
Read 2 more answers
Can u pls help I don’t understand I’ll give u 15 points
Juliette [100K]

Answer: \frac{4}{3}

Step-by-step explanation:

This is a multiplication problem. You are multiplying \frac{1}{3} by 4. This also means 4 divided by 3. They are both the same.

4 0
3 years ago
Work out the area of this quarter circle of radius 8 cm.<br> Give your answer in terms of pie
Bess [88]

16pi

Step-by-step explanation:

pi x r² = ans ÷ 4 = Answer for area

Pi×8²=64pi ÷ 4 = 16pi

3 0
3 years ago
A submarine cruises underwater at 20 km/h and on
Darina [25.2K]

Answer:

System of equations:

20x + 30y = 650

x + y = 25

Time underwater = 10 hours

Time at the surface = 15 hours

Step-by-step explanation:

Let x = time underwater at 20 km/h.

Let y = time on the surface at 30 km/h.

speed = distance/time

distance = speed * time

distance underwater: 20x

distance on the surface: 30y

total distance: 650

20x + 30y = 650

total time: x + y

total time: 25

x + y = 25

20x + 30y = 650

x + y = 25

20x + 30y = 650

-20x - 20y = -500

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

          10y = 150

              y = 15

x + y = 25

x + 15 = 25

x = 10

4 0
3 years ago
Other questions:
  • Jenny goes to dance class every 6 days, karate class every 12 days, and to the library
    6·2 answers
  • Given the sides 4, 6, 12, what type of triangle is this
    5·1 answer
  • 7n - 4 = 31
    11·1 answer
  • Help me plz u will make my day
    13·1 answer
  • Jada can bake 12 cookies in 30 minutes. at this rate, how long will it take her to bake 144 cookies?
    8·1 answer
  • What is the cube root of 3?
    15·2 answers
  • What is 6 feet + 4 feet measured to the nearest half foot
    14·1 answer
  • Please help me solve this math it’s due in 1 hour
    8·1 answer
  • Match the verbal phrase on the left with the corresponding equation on the right. Write the letter of the answer on the space pr
    7·1 answer
  • Rhianna is baking a cake and some cookies for a party. She used cups of flour for the cake. For each tray of cookies, she needs
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!