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kompoz [17]
3 years ago
10

Question 20 (5 points)

Mathematics
1 answer:
igor_vitrenko [27]3 years ago
3 0

Answer:

Step-by-step explanation:

What you gave 4x – y = 7 is in standard form

The problem on screen

4x-2/3y=7

The standard form is 12x-2y=21

Answer is A

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Find the slope of the line through each pair of points use the slope formula show your work (-9,-13), (-12,15)
drek231 [11]

Answer:

-28/3

Step-by-step explanation:

The formula for slope is [ y2-y1/x2-x1 ].

15-(-13)/-12-(-9)

28/-3 or -9 1/3

Best of Luck!

7 0
2 years ago
Part A: Explain why x = 5 makes 4x - 1 5 19 true but not 4x - 1 < 19.
Westkost [7]

9514 1404 393

Answer:

  • 19 ≤ 19 . . . true
  • 19 < 19 . . . false
  • x = 9

Step-by-step explanation:

A) A number cannot be less than itself, but can be equal to itself.

In each case, the left side of the inequality evaluates to 19:

  4(5) -1 = 20 -1 = 19

It is true that 19 is less than or equal to 19. This is true because 19 = 19.

It is not true that 19 is less than 19. A number cannot be less than itself.

__

B) 5x +2 = 47

  5x = 45 . . . . . . subtract 2 from both sides

  x = 9 . . . . . . . . . divide both sides by 5

The element 9 from the set is the solution to the equation.

6 0
3 years ago
Find the average rate of change of = f(x)= 2x^2-8x from X = 2 to X = 6 . Simplify your answer as much as possible.
erastova [34]
Average rate=delta y/delta x...  

c=(72-48-8+16)/(6-2)

c=32/4

c=8


7 0
3 years ago
the formula to convert a temperature C and degrees Celsius to a temperature F in degrees fahrenheit is 1.8C+32=F. Use this equat
Arturiano [62]

Answer:

Step-by-step explanation:

sorry this one isnt an easy one. but your answr should be 1.8

3 0
3 years ago
what is the equation of a line that passes through the point (6,1) and is perpendicular to the line whose equation is y=2x-6?
alexandr402 [8]

Answer:

y = -(1/2)x + 4

Step-by-step explanation:

Use the standard form on an equation:  y = mx + b

A line that is perpendicular has a slope that is the opposite reciprocal of the other line.  We also have a point (x, y) that is on the line, so our equation begins as..

1 = -(1/2)(6) + b           We must solve for b (  -1/2 is the opposite reciprocal of 2)

1 = -3 + b

4 = b  

so our equation is

y = -(1/2)x + 4

3 0
3 years ago
Read 2 more answers
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