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
Effectus [21]
3 years ago
10

What is the difference between adding and subtracting fractions and multiplying and dividing fractions?

Mathematics
1 answer:
77julia77 [94]3 years ago
4 0
With adding and subtracting fractions, you must find a common denominator. In multiplication, you just multiply numerator by numerator; denominator by denominator. In division, you multiply the fraction by the reciprocal of the 2nd. In multiplication and division, finding a common denominator is not needed.
You might be interested in
I really need help!!!!ASAP!!!Will mark as brainest!!!(Feel free to explain how you got your answer! :)
faltersainse [42]

Answer:

A) Quincy should buy 22 rolls

B) 43 rolls

C) she needs to buy 19 rolls of ribbon.

Step-by-step explanation:

A)

yards of ribbon = 322

ribbon comes in rolls= 15

Quincy should buy  = 322/15 = 21.46

Quincy should buy 22 rolls

B)

Twice the length of 322 yards is 644 yards. If I divide 644 by 15, the answer is 42 r 14. Because there is a remainder, we need to round the quotient up to 43.

Alice needs to buy 43 rolls of ribbon.

C)

If we divide the total amount of ribbon, 285, by the amount of ribbon in each roll, 15, we get:

285 ÷ 15 = 19

So, she needs to buy 19 rolls of ribbon.

One possible combination could be:

10 rolls of yellow ribbon = 150 yards

5 rolls of red ribbon = 75 yards

4 rolls of blue ribbon = 60 yards

total of: 10+5+4=19 rolls

Since there are 15 yards of ribbon in each roll, the total amount of ribbon will  be:

15×19=285

So answer is correct

Thanks!

3 0
3 years ago
3feet 6in + 8 feet 2in +4in + 2feet 6in
Ede4ka [16]
12 inches in a foot.

6in+2in+4in+6in= 18in (one and half feet)

3+8+2+1= 14 feet

The answer is 14 feet 6 inches.

I hope this helps!
~kaikers
8 0
3 years ago
Find z such that 87.9% of the standard normal curve lies to the left of z. (round your answer to two decimal places.) z =
zysi [14]
From standard normal distribution tables and with area to the left of Z being 87.9% or 0.879,

Z= 1.17 (that is, 1.1 at the left column + 0.07 at the top row where 0.879 is found)
7 0
3 years ago
Read 2 more answers
Help now i will branlist
gavmur [86]

Answer:

.23 cents per ounce

Step-by-step explanation:

first you do 3.68/16=.23

5 0
3 years ago
Read 2 more answers
Please for #1 and #2 @musiclover10045<br> It would mean a lot!!;)
guajiro [1.7K]

1a. You can't do much for it, answer could be x(x+8)

1b. (x+5)(x+3)

1c. (x + 3y)(x - 3y)

1d. (5x - 4) (x + 2)

2. It's very likely you need a protractor and a ruler for this. If not, tell me and I'll try to find it.

7 0
3 years ago
Other questions:
  • Solve the inequality 8(x + 1) &gt; 7(x + 2)
    5·2 answers
  • How many millimeters are in 9.4 centimeters
    15·1 answer
  • How can you determine the equation that represents this relationship?
    5·2 answers
  • A gumball machine contains gumballs in several different colors.
    7·1 answer
  • The record high temperature in January was 18 degrees. The record low temperature was –7 degrees. What is the amount of change b
    13·1 answer
  • Solve the following equation when x = 7. y = 8 + 3x <br> HELP
    12·2 answers
  • The volume of a cylinder is 256 in height of the cylinder is 1 in. What is the radius of the​ cylinder?
    13·1 answer
  • 20 POINTS NEED HELP ASAP!!!Which is
    11·1 answer
  • Describe the effect of the transformation (x,y) --&gt; (x,y+4)
    11·1 answer
  • Divide 36 books into two groups so the ratio is 5 to 7. (Use the double number line strategy)
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!