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
yawa3891 [41]
3 years ago
7

Please help fast! Solve! 2x-y = -7 and y = 2x + 7

Mathematics
2 answers:
kaheart [24]3 years ago
8 0

Answer:

um i love ur key bored

A) The equations consistent and independent because they are y=mx+b form. And the equations are two completely different lines.

B) After you solve for the equation and put in it y=mx+b, you see that both of the equations are the same. These means that the lines are consistent and dependent.

leave the variable alone Y

-y=-2x-7

divide the negative one that the Y has with the other numbers that are in the other side of the equal sign

y=2x+7

hope i helped

finlep [7]3 years ago
3 0

Answer:

Step-by-step explanation:

2x-y=-7

leave the variable alone Y

-y=-2x-7

divide the negative one that the Y has with the other numbers that are in the other side of the equal sign

y=2x+7

You might be interested in
Z +5 = 6<br> Help please
Phoenix [80]

Answer:

z = 1

Step-by-step explanation:

z + 5 = 6

z = 6 - 5

z = 1

Topic: Algebraic equations

If you would like to venture further into mathematics, you can check out my Instagram page (learntionary) where I post notes and mathematics tips. Thanks!

6 0
3 years ago
Read 2 more answers
The The high school art teacher has 9 cases of crayons with 52 boxes in each case.The elementary school art teacher has sl6 case
Scrat [10]

Answer:

The high school art teacher has 468 boxes in total and the elementary school art teacher has 1,664 boxes in total.

Step-by-step explanation:

1. Collect Information.

High School Teacher: 9 cases of crayons + 52 boxes per case

Elementary School Teacher: 16 cases of crayons with 104 boxes per case

2. Multiply the number of cases by the boxes per case to get the number of boxes that each teacher has in total.

High School: 9 cases × 52 boxes = 468 boxes in total

Elementary School: 16 cases × 104 boxes = 1,664 boxes in total

3. State your answer.

The high school art teacher has 468 boxes in total and the elementary school art teacher has 1,664 boxes in total.

4. Is my answer reasonable?

Yes, my answer is reasonable for multiple reasons:

  • The elementary school art teacher had more cases and more boxes so it would only make sense that the total number of boxes which the elementary school art teacher has would be greater than the total number of boxes which the high school art teacher has.
  • Using common knowledge of 50 × 9 being equal to 450 (If this isn't common knowledge then remember that 5×9=45 and that you could just bring down the 0 from the 50 and the answer would be 450) you could tell that the answer would be a little more than 450 and knowing that 50×10=500 you would know that it would also be less than 500. 468 falls in between of 450 and 500 so my answer here is reasonable.
  • Using common knowledge of 16×100 being equal to 1,600 and 17×100=1,700 you could tell that the answer would be greater than 1,600 and less than 1,700. 1,664 falls in between of 1,600 and 1,700 so my answer here is reasonable.  
5 0
4 years ago
Express the product of 2x squared plus 6x -8 and x+3 in standard form
NeTakaya

ANSWER

The standard form is:

2 {x}^{3}  + 12 {x}^{2}   + 10x - 24

EXPLANATION

The given product is

(2 {x}^{2}  + 6x - 8)(x + 3)

We expand using the distributive property to get:

x(2 {x}^{2}  + 6x - 8) + 3(2 {x}^{2}  + 6x - 8)

Expand the parenthesis;

2 {x}^{3}  + 6 {x}^{2}  - 8x + 6 {x}^{2}  + 18x - 24

This simplifies to

2 {x}^{3}  + 12 {x}^{2}   + 10x -24

Standard form is when the polynomial is arranged in decreasing powers of x.

8 0
4 years ago
Find the equation of the exponential function represented by the table below:
marshall27 [118]

Answer:

y=0.2(0.5)^x is the answer.

Step-by-step explanation:

Let the equation of the exponential function is,

y=a(b)^x

Two points from the given table which lie on the graph are (0, 0.2) and (1, 0.1)

For a point (0, 0.2),

0.2 = a(b)^0

a = 0.2

For another point (1, 0.1),

0.1 = 0.2(b)^1

b = \frac{0.1}{0.2} = 0.5

Therefore, exponential function defined by the given table is,

y=0.2(0.5)^x

7 0
4 years ago
A limited edition poster increases in value each year. After 1 year, the poster is worth $20.70. After 2 years, it is worth $23.
Trava [24]

Answer:

y=3.11x

Step-by-step explanation:

Not sure if it's correct. But my reasoning behind it is that 23.81-20.70=3.11 which means every year the cost goes up by $3.11

3 0
4 years ago
Other questions:
  • Kevin walked 5 miles in 3 hours. What was his walking rate in miles per hour?
    6·2 answers
  • Insert a +, -, x, or / to make each statement true<br> 27 3 5 2 = 19
    12·2 answers
  • 9000 for 5 years at 4.5% compounded monthly
    12·1 answer
  • Kyla can plant 300 trees in 1 hour
    15·1 answer
  • If there ar 10 people in the bus
    7·2 answers
  • What equation can be used to solve for x?<br><br> What is the value of x?
    12·1 answer
  • 4. A mathematics test has a 4:2 ratio of data analysis problems to algebra problems. If the test has
    7·1 answer
  • Which angle in the isosceles triangles is the biggest?
    5·2 answers
  • I need help!!! how do i do this
    10·2 answers
  • The volume of a cuboid is 225cm³.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!