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
Katena32 [7]
3 years ago
11

I need help ASAP ! Nd plz help me how to show work

Mathematics
1 answer:
Kisachek [45]3 years ago
4 0

Answer:

x = -3

Step-by-step explanation:

y = -x + 2

7x + 4y = -1

Subsitution method: (Substitute y)

7x + 4(-x+2) = -1

Expand.

7x + (-4x + 8) = -1

One plus and one minus make one minus. Two plus makes a plus.

7x -4x + 8 = -1

Simplify.

3x + 8 = -1

Isolate 3x.

3x = -1-8

    = -9

Find x.

x = -9 ÷ 3

  = -3

You might be interested in
40% of x is 35. What is the equation to find x
Dima020 [189]

Answer:

.40 x = 35  equation

x = 87.5

Step-by-step explanation:

Of means multiply and is means equals

40% * x = 35

Change percent to decimal form

.40 x = 35

Divide each side by .40

.40x/.40 = 35/.40

x = 35/.40

x =87.5

4 0
3 years ago
Read 2 more answers
the length of a side of a square is 10x+4 units. If the perimeter is 96 units. What is the area of the square?​
dmitriy555 [2]

Answer:

576 Units

Step-by-step explanation:

The way your teacher wants you to do it:

1. We know that multiplying a length by four gives us the perimeter of a square.

1a. Thus, we multiply the given length by four. 4(10x+4)=40x+16

1b. We know the perimeter is 96. So: 40x+16=96

2. Solving for x, we get x=2

3. Plugging our solved x into the given length  (10x+4), we see that the length of a side of the square is 10*2+4=24.

4. We know that the area of a square can be found by squaring the side of a square.

4a. 24*24=576.

5. The area is 576 units.

--------------------------------------------------------------

Easier Solution:

1. We know that the perimeter is length*4.

2. We set L to length.

2a. 4L=96

2b. L=24

3. We know that the length square is area.

4. 24*24=576.

4 0
3 years ago
A 70" TV is advertised on sale at a local store. What are the length and width of the television?
a_sh-v [17]
The length and width of the television could be any two numbers whose product is 70.
7 0
3 years ago
Use what you know about rounding to solve the problem.
Marina86 [1]

Answer:

Yes, you are correct, if it is 37 minutes and you are supposed to round, you round up.

Step-by-step explanation:

8 0
3 years ago
Rue or False: Temperatures above-zero represent negative numbers. *
skelet666 [1.2K]

Answer:

False

Step-by-step explanation:

tempuratures below zero are negative.

3 0
2 years ago
Read 2 more answers
Other questions:
  • A watermelon seed is 0.4cm long. How far would a line of 124 watermelon seeds stretch? Write your answer in meters.
    10·1 answer
  • Write an equation of the line below<br> (0,-4) and (5,-6)
    10·1 answer
  • 26 points!!!
    9·2 answers
  • Which article headline indicates a correlation between two variables?
    13·2 answers
  • Multiply for the following polynomial (y-8) (y+5) with the work included.
    6·1 answer
  • April and Amy are twin sisters. They have a total of 120 CDs. If Amy has twice as many CDs as April. How many CDs do they each h
    15·1 answer
  • A basketball coach uses a coordinate grid to mark the position and
    6·1 answer
  • There are four white socks and six black socks in a drawer. What is the probability of selecting a white sock, not replacing it,
    7·1 answer
  • What is the slope of the line that passes through the points (−3,1) and (7,−14)?
    14·1 answer
  • A cube-shaped aquarium has edges that are 3 feet long and is filled with water that has a density of 62 lbs/ft3 Should the aquar
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!