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
tia_tia [17]
3 years ago
12

Plz answer both questions 15 points

Mathematics
1 answer:
anyanavicka [17]3 years ago
3 0

Answer:

If the signs of rational numbers are same, then the answer is positive.

If the signs of rational numbers are different, then the answer is negative.

Step-by-step explanation:

Consider the provided information.

A: When multiplying or dividing rational numbers, when will the answer be positive?

If we are multiplying or dividing rational numbers the answer will be positive if and only if both the rational numbers have same sign.

For example: Multiply 2 and 4.

2×4=8              (same sign)

or

Multiply -2 and -4.

-2×-4=8         (same sign)

8 is a positive rational number.

Now divided 2 and 4.

\frac{2}{4} =\frac{1}{2}    

or

Divided -2 and -4.

\frac{-2}{-4} =\frac{1}{2}

1/2 is a positive rational number.

Hence, If the signs of rational numbers are same, then the answer is positive.

B: When multiplying or dividing rational numbers, when will the answer be negative?

If we are multiplying or dividing rational numbers the answer will be negative if and only if both the rational numbers have different sign.

For example: Multiply 2 and -4.

2×-4=-8              (different sign)

or

Multiply -2 and 4.

-2×4=-8             (different sign)

-8 is a negative rational number.

Now divided 2 and -4.

\frac{2}{-4} =-\frac{1}{2}

or

Divided -2 and 4.

\frac{-2}{4} =-\frac{1}{2}

-1/2 is a negative rational number

Hence,  If the signs of rational numbers are different, then the answer is negative.

You might be interested in
HELP IN A TEST ILL GIVE BRAINLIEST
german

Answer:

Can u send a more clear pic

Step-by-step explanation:

thankyou

8 0
3 years ago
What's the answer to this
aalyn [17]

Answer:

I can't see the picture???

5 0
3 years ago
Part 1: Kevin works at an Internet Café. The café charges customers based on the amount of time they use on the Internet. There’
tia_tia [17]

Answer:

46mins

EXPLANATION

20 cents=10mins

customers working hrs=$4.60*10

$4.60*10=46 minutes

8 0
1 year ago
Can someone help me?
olga nikolaevna [1]

The answer is -8°F. This is because it DROPPED 8 degrees, meaning it was 8°F MINUS 8°F which would equal 0°F. Hope that helps!


7 0
3 years ago
Can ya'll help me? tehee :)
monitta
128
328
437
837
Hope it helped
3 0
3 years ago
Other questions:
  • Triangles and algebra :)
    6·1 answer
  • What is 9/21 in simplest form
    9·2 answers
  • PLEASE HELP I AM DESPERATELY LOOKING FOR GOOD ANSWERS
    7·2 answers
  • Need help on this question
    11·1 answer
  • Plot -1/4 on the horizontal and vertical number lines.
    10·1 answer
  • 3/2 times 2/3 in the simplest form
    14·1 answer
  • In the triangle below, what is the length of the side opposite the 60° angle?
    6·1 answer
  • Help find the missing number for x
    15·1 answer
  • Mr. Moss had 2 gallons of paint. He painted 3 doors. How many benches can he paint with the paint that is​ left? Show your work.
    8·1 answer
  • Evaluate f3 + 11g - 4h when f = 3,9 = 2 and h = 7.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!