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
balandron [24]
3 years ago
13

1. 9m = 81 m = ______2. 75 = 3n n = ______3. r ÷ 7 = 12 r =______

Mathematics
1 answer:
arsen [322]3 years ago
5 0
1.9m=81  divide each side by 9 so we leave m alone, which cancels out the 9 on the left side leaving m=81/9  which simplifies to m=8

2.75=3n again we need to get n alone, so we are going to divide by 3 on each side.  This cancels the 3 on the right side, leaving 75/3=n  simplified to 25=n or n=25

3. r÷7=12  We need r alone.  We always do the opposite of what is already being done.  So in this case 7 is being divided.  The opposite of divide is multiply (or times).  So we are going to multiply each side by 7.  This will cancel the 7 out on the left side and leave r=12x7.  So r=84

So in the first 2, they were being multiplied, so we did the opposite and divided.  
In the last one, it was being divided, so we did the opposite and multiplied.
If it was being added, we would subtract.
If it was being subtracted, we would add.

Hope that helps!  Good luck!
You might be interested in
15-12 ÷3=n what is the value of n?
Galina-37 [17]
11 is the answer to that question
5 0
3 years ago
Read 2 more answers
Which are the roots of the quadratic function f(q) = q^2 - 125? Select two options.
GalinKa [24]
Q = 5/5 q= 3/5 zzzzzzzzzzzzzzzz
7 0
3 years ago
Read 2 more answers
The office in the living room in a tiny house shower wall the area of the office is 28 ft the area of the living room is 63 ft t
Delicious77 [7]

UHHH I DONT KNOW BUT I THINK ITS HMMMMM MAYBE 56??

4 0
2 years ago
Read 2 more answers
What is 9 to the of 3
MrRa [10]

Answer:

729

Step-by-step explanation:

8 0
2 years ago
6.2? + 773 + 8.70 - 9<br> What is the degree of the polynomial?
zysi [14]
Ridjdjdntjfjfjfnfirjfbxjdidjdjxududuhdjxhxudufbxjdudjdhd
3 0
3 years ago
Other questions:
  • Which given congruence is still needed to prove that LMO = NMO by AAS?
    14·1 answer
  • Police response time to an emergency call is the difference between the time the call is first received by the dispatcher and th
    9·1 answer
  • I WILL GIVE BRAINLYEST
    6·1 answer
  • Please help on 4 through 7 thx
    9·2 answers
  • What is the value of y?
    15·1 answer
  • A household refrigerator with a coefficient of performance of 2.4 removes energy from the refrigerated space at a rate of 600 Bt
    7·1 answer
  • Alexis bought 2 bags of apples for the fruit salad for her party. Each bag contained 13 apples. If she cuts each apple into 8 pi
    9·1 answer
  • (9x - 2)<br> (5x + 54)<br> (10y + 6)<br><br> what is the value of x and y
    9·2 answers
  • Which equation has the solution x=6
    5·2 answers
  • Uh- what is this?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!