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
kogti [31]
3 years ago
14

Simplify the expression below. (–7x + 4) – (2x – 8)

Mathematics
1 answer:
Elanso [62]3 years ago
5 0

Answer:

- 9x + 12

Step-by-step explanation:

Given

(- 7x + 4) - (2x - 8) ← distribute parenthesis by 1 and - 1

= - 7x + 4 - 2x + 8 ← collect like terms

= - 9x + 12

You might be interested in
Identify which functions have complex roots by selecting the function names on the provided coordinate plane,
nordsb [41]

Answer: d and b i think

Step-by-step explanation:

6 0
3 years ago
Can any one help with y = 2x + 4
geniusboy [140]

Answer:

It's in the screenshot hope it helpsss

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
One operator is holding a laser pointer at a height of 9 feet whose beam is reflected on a horizontal reflecting surface at a po
lutik1710 [3]

Answer:

The height (in feet) at which the laser will impact the wall is 6.75 feet

Step-by-step explanation:

The given parameters are;

The height from which the laser beam operator is holding the laser = 9 feet

The horizontal distance away from the pointer the beam is reflected = 8 feet

Given that we have;

f(x) = \dfrac{9}{8} \times \left | x - 8\right | = y

When x = 8, the point of reflection, the height, f(x) is given as follows;

f(x) = \dfrac{9}{8} \times \left | 8 - 8\right | = 0

When x = 7, the point of reflection, the height, f(x) is given as follows;

f(x) = \dfrac{9}{8} \times \left | 7 - 8\right | = \dfrac{9}{8}

Therefore, given that the point of reflection is at an elevation of 0 relative to the 9 feet of the laser source (pointer), by tan rule, we have;

tan(\theta) = \dfrac{Opposite \ side}{Adjacent \ side} =\dfrac{9}{8} = \dfrac{h}{7}

Where;

h = The height at which the laser meets the wall

h = \dfrac{9 \times  7}{8} =7.875

Given that the wall the laser meets is at the point x with elevation 9/8, the height, y, at which the laser meets the wall is therefore;

y = \dfrac{9 \times  7}{8} - \dfrac{9}{8} = \dfrac{54}{8} = 6.75 \ feet

The height (in feet) at which the laser will impact the wall = 6.75 feet.

7 0
3 years ago
Reduse 5 8/5???????????????????????????
Leviafan [203]

5 8/5 reduced is 1 3/5

3 0
2 years ago
the value of a certain car after r years is modeled by the expression 150000.7t. What are the initial cost, I, and the rate of d
aksik [14]

Answer:

74037.7t

Step-by-step explanation:

5 0
2 years ago
Other questions:
  • Please help me! I'll give brainliest!
    9·2 answers
  • After 7 years, Abner earned $1575 in simple interest from a CD into which he initially deposited $6000. What was the annual inte
    15·2 answers
  • What is the y-intercept in the equation y=45x+65
    6·2 answers
  • Is 8/10=2/5 a true proportion
    5·1 answer
  • If it takes 10 women 8 days to make 3 treehouses, how many days does it take 6 women to make 36 treehouses
    9·1 answer
  • The area of a square is represented by the expression 16x^4y^8. What is the length of each side of this square
    9·1 answer
  • If you can help me ill give u brainliest
    11·2 answers
  • SOMEBODY PLEASE HELP ME it’s due at 11:59
    7·1 answer
  • Thank you so very much
    6·1 answer
  • The area of the square is 36 square cm. Find its side.
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!