Which of the following relations are not functions? Select all that apply.  {(1, 3), (3, 7), (5, 11), (7, 15), (9, 19)}  {(1, 3), (1, 7), (5, 11), (5, 15), (9, 19)}  {(−2, 4), (−1, 1), (0, 0), (1, 1), (2, 4)}  {(2, 4), (1, 1), (0, 0), (1,−1), (2, −4)}  {(6, 3), (4, 1), (2, 1), (0,−1), (−2,−3)}  {(1, 3), (3, 7), (3, 11), (7, 15), (9, 19)}  {(1, 3), (3, 7), (5, 11), (9, 15), (9, 19)}

Answer:b

Step-by-step explanation:f(x)=|x|

Answer:

The first multiple of 7 = 14 or -21

The second multiple of 7 = 21 and -14

Step-by-step explanation:

Let

The first multiple of 7 = 7x

The second multiple of 7 = 7(x+1)

Square of the first multiple = (7x)^2

Square of second multiple = {7(x+1)}^2

Sum

(7x)^2 + 7(x+1)}^2 = 637

49x^2 + 49(x+1)^2 = 637

Divide through by 49

x^2 + (x+1) = 13

Open bracket

x^2 + x^2 + 1 + 2x = 13

Subtract 13 from both sides

x^2 + x^2 + 1 + 2x - 13 = 13 - 13

x^2 + x^2 + 1 + 2x - 13 = 0

2x^2 + 2x - 12 = 0

Divide through by 2

x^2 + x - 6 = 0

Solve the quadratic equation using factorization method

x^2 + 3x - 2x - 6 = 0

x(x+3) - 2(x+3) = 0

(x - 2) (x+3) = 0

x - 2 = 0

x = 2

x+3 = 0

x = -3

Substitute x = 2 or -3 into 7x

When x= 2

7(2) = 14

When x = -3

7(-3) = -21

The first multiple of 7 = 14 or -21

Substitute x = 2 or -3 into 7(x+1)

When x= 2

7(2+1) = 7(3) = 21

When x = -3

7(-3+1) = 7(-2) = -14

The second multiple of 7 = 21 and -14

Answer:

Joey is 14, Billy is 10.

Step-by-step explanation:

The system of equations you can use is:

j=b+4

j+b=24

(b+4)+b=24

2b+4=24

2b=20

b=10

j=10+4

j=14

Answer: j+b=24

J=b+4

Step-by-step explanation: (b+4) + b=24

You’re going to substitue J=b+4 into j+b=24

you’re going to get joeys age 14, Billy’s age 10

Angle 3 is 89 Degrees.

Angle 4 is 91 degrees.

Use Vertical Angles and the Triangle Theorems to help you/

Answer:

24th term

Step-by-step explanation:

The value of the nth term is 72. Then the position of the nth term will be 24.

A series of integers called an arithmetic succession or arithmetic chain of events has a fixed difference between the terms.

Let a₁ be the first term and d be a common difference.

Then the nth term of the arithmetic sequence is given as,

aₙ = a₁ + (n - 1)d

The explicit rule for a sequence and one of the specific terms is given.

fₙ = (3n - 3) + 3

If the value of the nth term is 72. Then the position of the term is given as,

72 = (3n - 3) + 3

72 = 3n - 3 + 3

72 = 3n

n = 72 / 3

n = 24

The value of the nth term is 72. Then the position of the nth term will be 24.

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Option A is correct answer

Answer:

option A i believe is correct

Step-by-step explanation:

 hope that helps you :)

Answer:

416

Step-by-step explanation:

Answer:

£500

Step-by-step explanation:

Answer:

4,560 pounds of soil per square foot

Step-by-step explanation:

19 × 8 = 152

152 × 30 = 4,560

Answer:

$15.90

Step-by-step explanation:

$6.36(2.5)=15.90

multiply price per pound times 2.5.

Answer:

Step-by-step explanation:

The expression for the total cost of a mail is given as

f(x) - 5.32 +0.80x, where x is the amount of weight in pounds

Given that x= 36 pounds we can find the cost of mailing 36 pounds of ect

hence let us put x=36 in the expression to find the total cost

f(x) =5.32 +0.80(36)

f(x) =5.32 +28.8

f(x) =34.12

Therefore the cost of mailing 36 pounds of ect is $34.12

Answer:

C

Step-by-step explanation:

D is moving +4 squares up to go to D'' and same goes for the rest of the letters . if it makes sense kinda confusing but trust it's C

Answer:

-3

Step-by-step explanation:

19-13=6+1=7-14=-7+4=-3

The integer represents the price of a share at the end of the day will be negative 3.

The analysis of mathematical representations is algebra, and the handling of those symbols is logic.

The price of a share of stock started the day at $19. During the day it went down $13 up $1, down $14, and up $4.

Then the integer represents the price of a share at the end of the day will be

⇒ 19 - 13 + 1 - 14 + 4

⇒ -3

The integer represents the price of a share at the end of the day will be negative 3.

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Answer:

all of these are rational numbers

Step-by-step explanation:

Answer:

it's acually 107,800

Answer:

30,000 yes this is correct

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

It's not going negative you can tell by the line it has y-intercept and the last on didn't the other ones have aa negative. If you have a problem with these kinds of equations just do process of elimination and you'll be fine also here's the answer to another question

Answer:

42/12

Step-by-step explanation:

3 1/2 in improper fraction form is 7/2. We can see the denominator in the equivalent fraction is 12. In order for that to happen, the common factor that must have been multiplied is 6. So the numerator of the equivalent fraction should be 42 because:

                         7            42

                       ___ =    ____

                         2            12

42/12

The answer is [tex]\frac{42}{12}[/tex]

First, you must simplify both sides if the equation.

[tex]\frac{7}{2}=\frac{x}{12}[/tex]

Then, multiply both sides by 12

[tex]42=x[/tex]

[tex]x=42[/tex]

Finally, substitute in 42 for x

[tex]3\frac{1}{2}=\frac{42}{12}[/tex]

Answer:

E

Step-by-step explanation:

basically if you do a graph y will start at 5 always because the entrance fee never change. then 0.6 equal 60 cents and since it's per pound you will multiple with x (how many pounds)

Answer:

E.

Step-by-step explanation:

Because it is 0.60 PER pound and an extra $5 so the equation would be C=0.60x+5

Answer:

a, R=P+C

b,$870

Step-by-step explanation:

a if P=R‒C.(to find R you have to know the opposite of ‒C) ( -C≠C)

then add C in two sides

(P+C=R‒C+C)

(P+C=R)

SO the formula is R=P+C

b the given are P=$350,C=$520

R=$350+$520

R=$870

i believe it helps you

Answer:

37 boxes

Step-by-step explanation:

you should try and write each of the steps into an equation of x. Where x is the boxes she started with

so, she had x boxes, she bought 7 (that's addition) and then half of those boxes (that's division) got destroyed in the fire and she has 22 left (that's your total).

you can write the equation like this:

(x+7)/2 = 22

then, you solve

(x+7) = 44

x = 37

she originally had 37 boxes

Answer:

4

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

Answer:

y=-5x+9

Step-by-step explanation:

Answer:

y=-5x+-9

Step-by-step explanation:

If you notice is says that the line HAS to go through (1,4) but if you need it to go through (-1,4) it would be y=-5x+-1

Answer:

18

Step-by-step explanation:

it does not have an area its an circle so it just 18 feet

really want a crown

Answer:

Another way to identify the domain and range of functions is by using graphs. Because the domain refers to the set of possible input values, the domain of a graph consists of all the input values shown on the x-axis. The range is the set of possible output values, which are shown on the y-axis.

Step-by-step explanation:

Answer:

a

Step-by-step explanation:

cause I had this question

Answer:

see below

Step-by-step explanation:

y= 1/2x - 2

To find the x intercept, set y =0 and solve for x

0= 1/2x - 2

Add 2 to each side

2 = 1/2x -2+2

2 = 1/2x

Multiply by 2

2*2 = 1/2x *2

4 =x

The x intercept is 4

Answer:

1. x = 6.5

2. x = 5

Step-by-step explanation:

Answer: 28.

Step-by-step explanation:

Let's define D = # of marbles in Damon's bag at the beginning.

First, he gave D/2 + 2 marbles to Artemio, so now he has:

(D - D/2 - 2) = (D/2 - 2) marbles left.

Now, he gives 1/4 plus of what he has left plus 5 to Banou, so he gives:

(D/2 - 2)/4 + 5 marbles to Banou.

Then Damon has now:

(D/2 - 2) - (D/2 - 2)/4 - 5 = 3*(D/2 - 2)/4 - 5.

Now Damon gives half of this to Alex, then the amount that he has left is:

(3*(D/2 - 2)/4 - 5)/2

And we know that this is equal to 2, then we can solve this equation as:

(3*(D/2 - 2)/4 - 5)/2 = 2

Let's solve this for D.

(3*(D/2 - 2)/4 - 5) = 2*2 = 4.

3*(D/2 - 2)/4 = 4 + 5 = 9

3*(D/2 - 2) = 9*4 = 36

(D/2 - 2) = 36/3 = 12

D/2 = 12 + 2 = 14

D = 2*14 = 28

Damon initially had 28 marbles.

Answer:

=18y+47

Step-by-step explanation:

Let's simplify step-by-step.

14y−(y−2)+5(y+9)

Distribute:

=14y+−y+2+(5)(y)+(5)(9)

=14y+−y+2+5y+45

Combine Like Terms:

=14y+−y+2+5y+45

=(14y+−y+5y)+(2+45)

=18y+47

Answer:

y = -2 11/18 or y = -2.6111 repeating

Step-by-step explanation:

14y -(y - 2) + 5(y + 9)

    Distribute the negative (-) to (y - 2)

    Distribute the five (5) to (y + 9)

14y -y + 2 + 5y + 45

    Combine like terms

18y + 47 = 0

       -47 = -47

18y = -47

18y/18 = -47/18

y = -2 11/18

Hope this helps! :)