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
Ber [7]
3 years ago
9

Which equation has exactly one solution?

Mathematics
2 answers:
ziro4ka [17]3 years ago
7 0

Answer:

  The answer is D

Step-by-step explanation:

9(x + -3) + 28 = 4x + -3

Reorder the terms:

9(-3 + x) + 28 = 4x + -3

(-3 * 9 + x * 9) + 28 = 4x + -3

(-27 + 9x) + 28 = 4x + -3

Reorder the terms:

-27 + 28 + 9x = 4x + -3

Combine like terms: -27 + 28 = 1

1 + 9x = 4x + -3

Reorder the terms:

1 + 9x = -3 + 4x

Solving

1 + 9x = -3 + 4x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-4x' to each side of the equation.

1 + 9x + -4x = -3 + 4x + -4x

Combine like terms: 9x + -4x = 5x

1 + 5x = -3 + 4x + -4x

Combine like terms: 4x + -4x = 0

1 + 5x = -3 + 0

1 + 5x = -3

Add '-1' to each side of the equation.

1 + -1 + 5x = -3 + -1

Combine like terms: 1 + -1 = 0

0 + 5x = -3 + -1

5x = -3 + -1

Combine like terms: -3 + -1 = -4

5x = -4

Divide each side by '5'.

x = -0.8

Simplifying

x = -0.8

Veronika [31]3 years ago
4 0

Answer:

the correct answer is D. 9(x-30) + 28 = 4x - 3

Step-by-step explanation:

You might be interested in
Which angles are complementary<br> to &lt;2. Select all that apply.
KiRa [710]

Answer:

∠1 only

Step-by-step explanation:

Complementary angles:

  • sum to 90°
  • form a right angle

The only angle (that's an answer choice) that helps form a right angle with angle 2 is angle 1, thus making it the correct answer.

Have a lovely rest of your day/night, and good luck with your assignments! ♡

 ~ ren ⚘

4 0
2 years ago
Dave buys 4 slices of one kind. He pays $6.00.
s344n2d4d5 [400]
Okay, so if Dave buys 4 slices of one kind and pays $6.00 $6 / 4 = $1.50 per slice So the correct answer is whichever pizza is $1.50 per slice. Hope that helps!
3 0
3 years ago
7y-4=17 what is the answer
yaroslaw [1]

Answer:

7y=21

y=21/7

y=3 answer

3 0
3 years ago
Read 2 more answers
Sarah draws a square that has a side that measures 35.2 mm. What is the perimeter of the square?
max2010maxim [7]

Answer:

140.8 cm2

Step-by-step explanation:

a spare has 4 sides so you need to times 35.2 by 4 which is 140.8

8 0
3 years ago
How would I figure this out ?
Anit [1.1K]
They get paid $22 a hour, so ur answer would be 374÷22=$17
3 0
3 years ago
Read 2 more answers
Other questions:
  • if you needed only 1c of milk, what is your best choice at the grocery store- a quart container, a pint container, or a 1/2 gal
    15·2 answers
  • S=2*3.14r^2 2*3.14rh for h
    7·2 answers
  • Which of the figures appear to be congruent?
    7·1 answer
  • Ending time: 10:08 A.M <br><br> Elapsed time: 30 minutes
    8·2 answers
  • PRECALCULUS please help​
    7·1 answer
  • A biologist was interested in determining whether sunflower seedlings treated with and an extract from Vinca minor roots resulte
    11·1 answer
  • 9. Which point of view is most likely to be uni eliable in a story?
    6·1 answer
  • Find the LCD. 9, 12 The LCD is<br><br><br><br> please help and quick!!
    15·2 answers
  • Given f(x) = 4x + 2, find f-1(3).
    10·1 answer
  • Find the volume of a rectangular prism with the following dimension 2cm by 3cm by 4cm
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!