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
Vedmedyk [2.9K]
3 years ago
13

If 3t - 7 = 5t, then 6t = A. 21 B. -7 C. -21 D. -42

Mathematics
1 answer:
podryga [215]3 years ago
6 0

Answer:

C. -21 is your answer

Step-by-step explanation:

Solve for t. Isolate the variable t in the first equation, then use the number gotten to solve the second equation.

3t - 7 = 5t

First, subtract 3t from both sides

3t (-3t) - 7 = 5t (-3t)

-7 = 5t - 3t

-7 = 2t

Isolate the variable (t). Divide 2 from both sides

(-7)/2 = (2t)/2

t = -7/2

t = -3.5

Plug in -3.5 for t in the second equation

6(t) =

6(-3.5) =

6(-3.5) = -21

C. -21 is your answer

~

You might be interested in
The tree nearest to the classroom is 30 feet tall.
Afina-wow [57]

Answer: Feet

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Y=-8x-4 for what value of x is y equal too -16
boyakko [2]

Answer: X=1.5

Step-by-step explanation:

The equation when y is -16

-16=-8x-4

-12=-8x

12/8 is 1.5

8 0
3 years ago
What is the value of the underlined digit in 16,403
Ilia_Sergeevich [38]
If the 1 were underlined it would be 10,000
If the 6 were underlined it would be 6,000
If the 4 were underlined it would be 400
If the 0 were underlined it would be 0
If the 3 were underlined it would be 3

8 0
3 years ago
What are the coordinates of the terminal point determined by t=20pi/3?
attashe74 [19]

Answer:

(- 1/2 , √3/2)

Step-by-step explanation:

t=20π/3

t' = 20π/3 - 6π = 2π/3   (120°) ... 2nd quadrant

If we start from (1,0) of unit circle, the coordinate of terminal point (x,y)

OF/OE = - cos 60° = x / 1 =  - 1/2

FE/OE = sin 60° = y/1  = √3/2

3 0
3 years ago
Betty had 1 1/4 hours to finish a test. She was nervous and it took her 1/2 an hour to calm down. How much time did she have lef
Airida [17]

Answer:

Betty had 45 minutes to take her test in mixed number form it is

Step-by-step explanation:

1 hour

1/4 an hour = 15 minutes

1/2 an hour is 30 minutes

1 hr 15- 30= 45

45= 3/4 of and hour remaining to test

5 0
2 years ago
Other questions:
  • Elsa sold 37 pairs of earrings for $20 each at the craft fair. She is going to use 1/4 of the money to buy new CDs and is going
    9·2 answers
  • HELP!!!! <br>add: (5x3 -3x+7) + (2x3+6x2-x)​
    13·1 answer
  • Answer correctly for brainliest and also get a thanks ! Don't answer if you don't know it please !
    14·1 answer
  • Angle r° = 2w°. What is the measure of angle r°?
    8·1 answer
  • Alexis put $2000 in a savings account. After 4 years, she had $2543 in the account. What rate of interest did she earn? Use the
    6·2 answers
  • Carlos's father bought him a 18-foot board to cut into shelves for his bedroom. Carlos plans to cut the board into 7 equal size
    14·1 answer
  • The National Health Interview Survey, which included a questionnaire administered during in-person interviews with 21,781 adults
    10·1 answer
  • Evaluate the expression.<br><br> |23 – 4|
    12·1 answer
  • Construct a quadratic equation whoose root are <br>1 √7-2 and √7+2​
    6·1 answer
  • Pls help me
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!