What is domain and range

Answers

Answer 1

Answer: domain = x
range = y
so like in (4,1) The four is the domain and the range is 1

Answer 2

Answer: Domain is all the x coordinates, range is the y coordinates

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Lionel computed the average rate of change in the depth of a pool over a two-week interval to be zero. Which statement must be true?The pool must have been empty for the entire interval. The pool must have been the same depth at the start of the interval as it was at the end of the interval. The pool must have been deeper at the end of the interval than it was at the start of the interval. The pool must have been more shallow at the end of the interval than it was at the start of the interval.
A carton of paper is priced at $27.00 now. If the papergoes on sale for 25% off the current price, what will be the sale price of the carton?
Which of the following is the equation of a line parallel to the line y=3x+2, passing through the point (10,1)?A. 3x - y=29 B. 3x + y=29 C. -3x - y=29 D. 3x + y=29
Triangle ABC is similar to Triangle DEF, then AB is congruent to DE

Solve the system of equations. 5x+9y+9z=5 4x+9y+6z=10 2x+2y+5z=9 Answer choices:a. x=116, y=8,z=-21
b. x=82, y=-10, z=9
c. x=-116, y=28,z=37
d. x=6,y=-14,z=1

Answers

5x + 9y + 9z =   5 ⇒ 5x +   9y +   9z =   5
4x + 9y + 6z = 10 ⇒ 4x +   9y +   6z = 10
2x + 2y + 5z =   9    9x + 18y + 15z = 15

5x + 9y + 9z =   5 ⇒ 4x + 9y +   6z = 10
4x + 9y + 6z = 10 ⇒ 2x + 2y +   5z =   9
2x + 2y + 5z =   9    6x + 11y + 11z = 19

9x + 18y + 15z = 15 ⇒ 99x + 198y + 165z = 165
6x + 11y + 11z = 19 ⇒ 90x + 165y + 165z = 285
      9x + 33y = -120

5x + 9y + 9z =   5 ⇒ 5x + 9y + 9z =   5
4x + 9y + 6z = 10 ⇒ 4x + 9y + 6z = 10
2x + 2y + 5z =   9 ⇒ 1x + 0y + 3z = -5

5x + 9y + 9z =   5 ⇒ 4x + 9y + 6z = 10
4x + 9y + 6z = 10 ⇒ 2x + 2y + 5z =   9
2x + 2y + 5z = 9 2x + 7y + 1z =   1

1x + 0y + 3z = -5 ⇒ 1x +   0y + 3z = -5
2x + 7y + 1z = 1 ⇒ 6x + 21y + 3z = 3
      -5x - 21y = -8

9x + 33y = -120 ⇒ 63x + 231y = -840
-5x - 21y =    -8 ⇒ -55x - 231y =   -88
         8x = -928
      8 8
   x = -116
             -5x - 21y = -8
         -5(-116) - 21y = -8
         580 - 21y = -8
         - 580      - 580
   -21y = -588
      -21    -21
          y = 28
      5x + 9y + 9z = 5
      5(-116) + 9(28) + 9z = 5
      -580 + 252 + 9z = 5
      -328 + 9z = 5
      + 328    + 328
   9z = 333
      9    9
   z = 37
   (x, y, z) = (-116, 28, 37)

The answer to the problem is C.

F(x) = 3x + 2 g(x) = 2x^2 - 4x
h(x) = x^2 - x + 7

Find f[g(5)]

A. 92
B. 2
C. 30
D. 242

Answers

Answer:

Step-by-step explanation:

Evaluate g(5), then use the value obtained to evaluate f(x) , that is

g(5) = 2(5)² - 4(5) = 2(25) - 20 = 50 - 20 = 30, then

f(30) = 3(30) + 2 = 90 + 2 = 92

Solve each equation by finding all roots x^4-16=0

Answers

${ x }^( 4 )-16=0\n \n { x }^( 4 )=16\n \n x=\pm \sqrt [ 4 ]{ 16 } \n \n \therefore \quad x=\pm 2$

add both sides by 16
so you'll have x^4 =16
take the 4th root of both sides and you'll get x= 2

Every year Aiden uses income from his job to pay for 80% of his college tuition. Next year’s tuition will be $590 more than this year’s, and Aiden will have to pay $3,064. How much is this year’s tuition? A) $2,474 B) $2,774 C) $2,824 D) $2,924

Answers

The answer is A. $2,474

The sum of a number and 18 times its reciprocal is 11. Find the number(s). Let x represent the unknown number.
The Reciprocal of x is____?

Answers

i believe that n=-9?

sorry if im not right i just guessed based on an equation that i know for this stuff

Functions 1 and 2 are shown below:Function 1: f(x) = −3x2 + 2
A graph of a parabola with x intercepts of negative 0.5, 0 and 2, 0 and a vertex of 0.5, 4 is shown.

Which function has a larger maximum? Type your answer as 1 or 2.