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
telo118 [61]
3 years ago
12

How do you find percent of a number mentally

Mathematics
2 answers:
ycow [4]3 years ago
6 0
Percentage of a number using mental math. Learn how to solve percent problems in your head! Since 10% is 1/10, and it's so easy to find 1/10 of any number, we can use that to quickly calculate certain percentages of quantities in our heads. to find 20% of a number, first find 10% of it, and double that.
olga55 [171]3 years ago
5 0
It isn't easy really but you can always divide the number out. For example 50% of 200 is 100 by dividing 200 by 2 or 25% of 100 is 25 by dividing 100 by 4 since 25% is equivalent to 1/4
You might be interested in
Meg and Rosa played a game. The game lasted 35 minutes and ended at 10:20 a.m.
ANEK [815]

Answer:

9:45 am

Step-by-step explanation:

Hope this helps!

7 0
3 years ago
Read 2 more answers
A ball of mass 0.4 kg flies through the air at low speed, so that air resistance is negligible. What is the net force acting on
arsen [322]

Answer:

-3.92 N

Step-by-step explanation:

We are given that

Mass of ball=0.4 kg

Acceleration due to gravity=-9.8m/s^2

Because the ball flies against to gravity

We have to find the net force acting on the ball while it is in motion.

We know that when there is no air resistance then the net  force acts on the ball is equal to weight of ball.

Net force,F =mg

Substitute the values then we get

F=0.4(-9.8)

F=-3.92N

Hence, the net force acting on the ball while it is on motion=-3.92 N

6 0
3 years ago
How do you solve this step-by-step?
gtnhenbr [62]

Answer:

  • 7 1/20

<u>OAmalOHopeO</u>

4 0
2 years ago
A boat traveling at a constant rate. In 4 seconds, the boat travels 80 feet what is the rate the boat is traveling at in feel pe
Varvara68 [4.7K]

Answer: 20 feet per second

Step-by-step explanation:

Do 80 divided by 4

6 0
3 years ago
What are the answer for these questions?​
Burka [1]

Answer:

1. yes

2. 3

3. 1x

4. y=1x+3 or y=x+3

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • A square dance floor has a perimeter of 120 yards. What is the length of a diagonal of the dance floor?
    10·1 answer
  • Which event was most influential in turning American public opinion against Germany?
    11·1 answer
  • Solve the equation x^(2)-x=5x-25 over the complex numbers. Simplify the answer. Show your work.
    14·1 answer
  • (08.05)Some students reported how many textbooks they have. The dot plot shows the data collected:
    12·1 answer
  • What is 10% of 3,457?
    15·1 answer
  • Find y if 3х + 4y = 1
    9·2 answers
  • Alvin is taking a bus on a ski trip. The bus travel to 174 miles The bus travel to 174 miles In the first three hours of the tri
    12·1 answer
  • Select the expression equivalent to (5.2x + 4.8) − (-6x − 2)
    13·1 answer
  • Group the terms with variables on one side of the equal sign, and simplify.<br> 8t −15 = 32t
    13·1 answer
  • Quick algebra 1 question for 10 points!
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!