A, B, C, and D have the coordinates (-8, 1), (-2, 4), (-3, -1), and (-6, 5), respectively. Which sentence about the points is true? A. A, B, C, and D lie on the same line. B. and are perpendicular lines. C. and are parallel lines. D. and are intersecting lines but are not perpendicular. E. and are parallel lines.

We can write -

Cost of stool = $3

Cost of chair = $8

What is a expression? What is a mathematical equation? What is Equation Modelling?

A mathematical expression is made up of terms (constants and variables) separated by mathematical operators. A mathematical equation is used to equate two expressions. Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem.

We have 6 stools and 4 chairs cost $58 but 5 stools and 2 chairs cost $35

Assume that the cost of a stool is $x and of a chair is $y. Then -

6x + 4y = 58     ..[1]

5x + 2y = 35     ..[2]

Eq[2] x 2, we get -

10x + 4y = 70   ..[3]

Eq[3] - Eq[1], we get -

10x - 6x = 70 - 58

4x = 12

x = 3

Cost of stool = $3

Cost of chair -

4y = 70 - 38

4y = 32

y = 8

Cost of stool = $3

Cost of chair = $8

Therefore, we can write -

Cost of stool = $3

Cost of chair = $8

To solve more questions on Equations, Equation Modelling and Expressions visit the link below -

brainly.com/question/14441381

#SPJ2

Answer:

1. B

2. 2 and 1/8 cups

Step-by-step explanation:

You just had to make common denominators and then your would subtract

Answer:

1) B

2) 2 1/8 cups

Step-by-step explanation:

1) make the denominator the same so it is 5 4/12 minus 2 9/12. You get 2 7/12 which is greater than 2 1/2 (2 6/12) and smaller th an 3

2) 8 7/8 minus 6 3/4 is equivalent to 8 7/8 minus 6 6/8 which is 2 1/8

All done mentally.