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
rodikova [14]
3 years ago
15

What is the variable for -7.8 = 4.4 + 2r

Mathematics
1 answer:
balandron [24]3 years ago
6 0

Answer:

r = -6.1

Step-by-step explanation:

-7.8 = 4.4 + 2r

To get r, you need to isolate the variable

Subtract the 4.4 from both sides

-7.8 - 4.4 = 4.4 + 2r - 4.4

4.4 cancels out on the right

-12.2 = 2r

Divide both sides by 2

-12.2/2 = 2r/2

-6.1 = r

You might be interested in
What is the property used in 25+0=25
xz_007 [3.2K]

math teacher said its associative

5 0
3 years ago
Read 2 more answers
Sandy and Alex are married, with no dependents. They wish to file a joint tax return. Both of them work, but their combined sala
GREYUIT [131]

Answer:I'm pretty sure it would be C but that might be wrong

Step-by-step explanation:

7 0
2 years ago
The American Civil War was a civil war in the United States from 1861 to 1865, fought between northern states loyal to the Union
Sloan [31]

Answer:

The American Civil War was a civil war in the United States from 1861 to 1865, fought between northern states loyal to the Union and southern states that had seceded to form the Confederate States of America.

Why do phase changes occur?

1. Compare: Set the Water temperature to 0 °C and click Play. Observe the water molecules.

Click Reset, set the Water temperature to 100 °C, and click Play again.

What do you notice? The water molecules are moving slightly faster at 100 °C than at 0 °C.

[Note: This difference may be too small to observe easily.]

2. Observe: Click Reset. The mean molecular speed of the water molecules is displayed

below the container. Set the Water temperature to 0 °C and Add/remove heat energy to

400 J/s. Click Play.

A. How does the mean speed of the water molecules change as they are heated?

The average speed of water molecules increases as they are heated.

B. Does the mean molecular speed change as much as the temperature as the

water heats up? Explain.

Sample answer: For each degree of temperature change, the mean molecular

speed increases by about 1 m/s. At 100 °C, the mean molecular speed is about

17% faster than at 0 °C.

3. Explain: How is temperature related to the motions of molecules?

The higher the temperature, the faster the molecules move.

4. Observe: Click Reset. Set the Water temperature to 20 °C and the Ice volume to 50 cc.

Set Add/remove heat energy to 0 J/s. Click Play. How do the molecules in the liquid

interact with the molecules in the solid?

The molecules of the liquid collide with the molecules of solid, gradually breaking the bonds

between the molecules in the solid and causing the ice to melt.

Step-by-step explanation:

7 0
2 years ago
9. Eight friends went to a hockey game. The
Ira Lisetskai [31]

Answer:

y = 8x + 4(6)

y = 8x + 24

Step-by-step explanation:

8 friends bought tickets to a hockey game at $x

4 of them also bought a guide book at $6

If y = total cost

8 people bought tickets and 4 bought guides.

Then simplify by multiplying 4 and 6.

8 0
3 years ago
PLEASE HELP GUYS/GIRLS
den301095 [7]

Answer:

3

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • -4 1/5+3 2/3+ -1 2/5
    14·2 answers
  • An online furniture store sells chairs for $150 each and tables for $400 each. Every day, the store can ship no more than 30 pie
    9·1 answer
  • Consider the shape below. (1) determine the value of x so that the volume of the shape is 165cm cube, and (2) once you have foun
    15·1 answer
  • What is the midpoint between points (4,7) and (1,1)?
    12·2 answers
  • A hat that originally cost 12.50 with a 60% markup find the total cost
    15·1 answer
  • F 144 pieces of candy are placed into candy bags with each bag containing 12 pieces of
    10·1 answer
  • What is the slope-intercept form of the following equation?
    11·1 answer
  • Someone please help me, write a variable equation to represent the situation, and solve it by using inverse operations.
    8·1 answer
  • Please help me, i only have 30 minutes!
    10·2 answers
  • Which example represents a 25% increase? Group of answer choices The attendance at the local high school drama for Friday evenin
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!