Which ones are functions and which ones aren't?

Which Ones Are Functions And Which Ones Aren't?

Answers

Answer 1

Answer:

1. A is function.

2. A, is function

3. B is function.

Step-by-step explanation:

Hope it helps.

Answer 2

Answer:

1) B

2) A

3) B

Step-by-step explanation:

In a function... no value can be repeated in the domain

This is especially easy to discern in graphs because of the Horizontal Line Test


Related Questions

Marco went to the cafeteria to buy chicken sandwiches, C, worth $2.00, and hamburgers, h, worth $2.50.
He bought a total of 9 items and spent a total of $20.50. How many hamburgers and chicken sandwiches
did Marco buy?
HELP

Answers

Answer:

5 Hamburgers  = $12.50 4 Chicken sandwiches $8.00( $12.50 + $8.00 = $20.50

Step-by-step explanation:

Answer:

Marco bought 5 hamburgers and 4 chicken sandwiches.

Step-by-step explanation:

Set up a system of equations:

2c + 2.5h = 20.5

c + h = 9

Solve by elimination by multiplying the bottom equation by -2:

2c + 2.5h = 20.5

-2c - 2h = -18

Add the equations together and solve for h:

0.5h = 2.5

h = 5

So, he bought 5 hamburgers. Plug in 5 as h into the second equation to solve for c:

c + h = 9

c + 5 = 9

c = 4

So, Marco bought 5 hamburgers and 4 chicken sandwiches.

Which statement is Irue about the given information?
+
B
с
DE

Answers

Answer:

b

Step-by-step explanation:

awnser 3

both are congrent

______ terms are also expressions. (fill in the blank)
A. No
B. All
C. Some

Answers

the answer is:

c. some

Help!
What is one and sixty-seven hundredths added to fifteen and nine tenths?

Answers

1.67 + 15.9 And just add them together


Which set of ordered pairs represents a function?
A {(1, 2), (2, 3), (2, 4), (2,5)}
B {(2, 3), (3, 5), (5, 7), (7, 9)}
C {(3, 3), (3, 5), (3, 6), (4, 5)}
D {(0,1), (0, 2), (0, 3), (0,4)}

Answers

Answer:

Step-by-step explanation:

The anser would be B.

The y is allowed to repeat a number but the x cannot. If the x does repeat a number then its not a function. (X,Y)

please help meee i’m abt to failllllllllllll

Answers

Answer:

stop cheating boi

Step-by-step explanation:

Find the area of a square with side length x when x is equal to the given value. Are the area of a square and the length of its side directly proportional? Justify your answer. x=10 in.

Answers

Step-by-step explanation:

The formula for calculating the area of a square is expressed as;

A = x² where;

x is the length of one side of the square

Given

x = 10in

A = 10²

A = 10 * 10

A = 100in²

Area of the square with side length 10in is 100in²

From the equation A = x², we can see that as the value of x increases, the value of the area also increases and vice versa. This means that the area of the square is directky proportional to its length. Hence we can say YES, the area of a square and the length of its side directly proportional

Answer:

100 sq in

Step-by-step explanation:

No, not proportional

Put the steps in order?

Answers

1) distribute 2 to each term within the parentheses

2) combine like terms . ( which means you would subtract 6 - 2 )

3) subtract 4 from bout sides of the equation

4) divide both sides of the equation by 4

5)final answer x = 1/4

Help please! Thanks!

Answers

Answer:

50

Step-by-step explanation:

120 +angle1 = 180  angle 1 is 60   70+60+angle2 should be equals 180 so 2 is 50 degree

1 is 60 degree 3 is 80 degree 4 is 100 degree 2 is 50 degree

60+40 +angle3 = 180 angle3 is 80  

3+4 should be equal 180 3 is 80 180-80= 100 4 is 100


Find the length of YZ.

Answers

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The triangle is right-angle so we are allowed to use the Pythagorean theorem.

According to the Pythagorean theorem :

[tex] ({XZ})^{2} = ({XY})^{2} + ({YZ})^{2} [/tex]

[tex] {65}^{2} = {56}^{2} + ( {YZ})^{2} [/tex]

[tex] {65}^{2} - {56}^{2} = ({YZ})^{2} [/tex]

[tex]( {YZ})^{2} = 1089[/tex]

[tex]YZ = \sqrt{1089} [/tex]

[tex]YZ = 33[/tex]

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Alex bought 3 tacos for $4.00. How much would she have to pay for 10 tacos at this rate?

Answers

Answer = 13$
Explanation = This would mean each taco would be roughly 1.3$ since 4/3=1.333, so 1.3x10=13$

Will give brainliest if correct.

Answers

Answer:

The equation is y = 3x + 15.

The second equation is y = 3 * 50 + 15

If you have a value of 50 berries picked, you would make 165 dollars.

Noa was paid a 25 percent commission for selling a used car.

Percents
Total

100%


If she was paid $1,631.24, what was the selling price of the car?
$4,078.10
$6,524.96
$8,156.20
$40,781.00

Answers

Answer:

$6,524.96

Step-by-step explanation:

His quarter commission times four is the awnser

Answer:

BHOPE THIS HELPS

How do you solve this problem?
9=-y it is equations and inequalities
PLEASE HELP

Answers

Bc there is no x in the equation you can assume that the x varies and would be a complete horizontal line with a Y intercept of -9 (if you divide both sides by -1 you get -9=y) . Hope this helps

50% of 320 is equal to 80% of what number?

Answers

Answer:

128

Step-by-step explanation:

help plz (I give you brainlist)

Answers

Answer:

58.3825

Step-by-step explanation:

Add all 4 numbers together and divided by how many numbers are there (4)and you get your answer

Terry has $5.79 to go shopping Which mixed number below is the fraction equivalent to $5.79? 500 a 5 79/100 b. 5 79/1000 57 9/100 d 57 9/10​

Answers

Answer:

579/100 is the same if u turned it into a decimal it would be 5.79

Step-by-step explanation:

you would do 579 divided by 100 and that will give you 5.79  

Answer:

the answer is 579/100

Step-by-step explanation:

can someone help me answer this question please?

Answers

Answer:

A

Step-by-step explanation:

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

The three roots are going to give - 18 so only A and D can be correct. Why minus? because at some point 3 and 2 and - 3 will all be multiplied together. When they are, the result is - 18

So why did I write x + 2 rather than x - 2? Because the roots turn an equation into 0. You are looking for a way to make x + 2 = 0. It will do that when x = - 2

which is what you were given.

Now to get the answer

(x - 3)(x + 3) = x^2 - 9

(x^2 - 9)(x + 2) = x^3 + 2x^2 - 9x - 18 = f(x)

A circuit overloads at 1800 watts of electricity you plug in a toaster that uses 800 watts of electricity write and solve an inequality that represents how many watts you can add to the circuit without overloading it.

Answers

Answer:

x ≤ 1000 W

Step-by-step explanation:

Since the circuit becomes overloaded when the load exceeds 1800W and the toaster uses 800 W.

Let the additional watts be x

Therefore;

800 + x ≤ 1800

x ≤ 1800 -800

x ≤ 1000 W

What is the slope of this graph?
O
5
3
o
3
O
-3

Answers

Answer:

where is the graph?

Step-by-step explanation:

Jordan created a scale drawing of a rectangular room. The drawing is 8 inches long by 6 inches wide. He used a scale of 1 inch equals 3 ft. What is the area, in the square feet, of the room?

Answers

Answer: 432 ft^2

Step-by-step explanation:

If 1"=3', and the box is 8"x6", then we can simply multiply the 8 and 6 by three. You would get 24 by 18.

Follow this up by the equation a=w*l to get

a=24*18 = 432 ft^2.

What is the definition of scale factor

Answers

Answer:

The scale factor is the ratio of the length of a side of one figure to the length of the corresponding side of the other figure. Example: Here, XYUV=123=4 . So, the scale factor is 4 .

Step-by-step explanation:

:D

Yeah whatever they said ^^^^^

What is 1 5/9 as a percent?

Answers

Answer:

1 and 55%

Step-by-step explanation:

Five divided by nine.

Write an equation that could be used to find three consecutive odd integers whose sum is -3

Answers

Answer:

          2x+1 + 2x+3 + 2x+5 = -3

Step-by-step explanation:

2x+1       - the first odd integer

2 x+1 + 2 = 2x+3   - the next odd integer consecutive to 2x+1

2x+3+2 = 2x+5 - the odd integer consecutive to 2x+3 (the third consecutive odd integer)

2x+1 + 2x+3 + 2x+5  - the sum of three consecutive odd integers

therefore the equation:

                                     2x+1 + 2x+3 + 2x+5 = -3

6x + 9 = -3

6x = -12

x = -2

2x+1=2(-2)+1=-3

2x+3=2(-2)+3=-1

2x+5=2(-2)+5=1

the three consecutive odd integers whose sum is -3 are: -3,-1,1

What figure models 6 divided by 3/2?

(6 divided by 3/2 equals 4)

NEEDS HELP NOW!
BRAINLIEST!

Answers

The second one

Pls mark brainliest

Solve the equation for y , (REDUCE IF POSSIBLE, AND WRITE YOUR ANSWER IN THIS FORM; y=mx+b).

−6x+y=18

Answers

Answer:

y=6x+18

Step-by-step explanation:

add the -6x to the other side to get y alone

Answer:

-6x + y = 18 reduced is -2x + y = 2

Step-by-step explanation:

it is called the Hamber Pickering Formula according to STUIPDPEDIA LOL!

Emie read that the movie made 25,992,412.50 in its third week he also read that the average ticket price for this week was 8.35how many people saw the movie this week

Answers

Given :

Collection in third week, C = $25,992,412.50 .

Average ticket price, T = $8.35 .

To Find :

Number of people who saw movie in  week.

Solution :

Let, number of people are x.

[tex]\text{Number of people }=\dfrac{\text{Total amount }}{\text{Average price}}\\\\= \dfrac{25,992,412.50 }{8.35}\\\\[/tex]

≈ 3112864

Therefore, around 3112864 people saw the movie this week.

Hence, this is the required solution.

There is 1500 ft of fencing available to make 6 identical pens. Find the maximum area for EACH pen (meaning maximum of one pen).​

Answers

Answer:

The maximum area is therefore is 93750 ft²

Step-by-step explanation:

The given parameter are;

The a]length of fencing available = 1500 ft.

The perimeter of the figure = 9·x + 4·y

Therefore, 9·x + 4·y = 1500 ft.

The area of the figure = 6 × (x × y) = 3·x × 2·y

From the equation for the perimeter, we have;

9·x + 4·y = 1500

y = 1500/4 - 9/4·x = 375 - 9/4·x

y = 375 - 9/4·x

Substituting the value of y in the equation for the area gives;

Area = 3·x × 2·y = 3·x × 2·(375 - 9/4·x) = 2250·x - 27/2·x²

Area = 2250·x - 27/2·x²

The maximum area is found by taking the derivative and equating to zero as follows;

d(2250·x - 27/2·x²)/dx = 0

2250 - 27·x = 0

x = 2250/27 = 250/3

x = 250/3

y = 375 - 9/4·x = 375 - 9/4×250/3 = 187.5

The maximum area is therefore, 3·x × 2·y = 3 × 250/3 × 2 × 187.5 = 93750 ft²

The maximum area is therefore = 93750 ft.²

24. Seven tenths of a number plus 14 is less than forty-nine.

Answers

Answer:

50. ☺️☺️

Step-by-step explanation:

I'm going to assume you need this inequality solved.

First, write it as numbers, not words.

7/10n + 14 < 49

where "n" is the unknown number.

Second, if I were you, I'd change that fraction into a decimal, as it'll make life easier later on.

7/10 = 0.7

Now, solve it like you would any other equation.

0.7n + 14 < 49

0.7n +14 - 14 < 49 - 14

0.7n < 35

0.7n ÷ 0.7 < 35 ÷ 0.7

n < 50

The answer is n < 50

Answer: 50

Step-by-step explanation:

49 - 14 = 35

35/7 = 5

10 x 5 = 50

Since, 35 is Seven tenths of a number, One tenth is 5 and there are ten tenths, One tenth which is 5 times ten since there are ten tenths equals to 50 (5 x 10 = 50).

What value of x is in the solution set of 9(2x + 1) < 9x – 18?

Answers

Answer:

-3 > x

Step-by-step explanation:

Multiply 2x and 1 by 9. You have 18x +  9 < 9x - 18.Add 18 to 9. You are adding because it is the opposite of subtraction, so it cancels out. You now have 18x + 27 < 9x.Subtract 18x from 9. There is no addition sign in front of the 18x, but it's basically implied. You now have 27 < -9x.Divide both sides by -9. When you divide by a negative, the inequality sign flips. You now have -3 > x.
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