Which of the following relations is a function?A. (2,4), (-5, 6), (2, 3), (-6, 2)
B. (8, 1), (-5, 4), (2, 1), (8, 2)
C. (2,4), (-5, 2), (8, 1), (-6, 2)
D.
(2,0).(-5, 3), (8, 1), (-5,5)

Answers

Answer 1
Answer:

Answer: OPTION C

Step-by-step explanation:

A relation is a function when each input value has one and only output value.

For option A:

 (2,4), (-5, 6), (2, 3), (-6, 2)

You can observe that the input value "2" has two output values. Then it is not a function.

For option B:

(8, 1), (-5, 4), (2, 1), (8, 2)

You can observe that the input value "8" has two output values. Then it is not a function.

For option C:

(2,4), (-5, 2), (8, 1), (-6, 2)

You can observe that each input value has only one output values. Then it is a function.

For option D:

(2,0).(-5, 3), (8, 1), (-5,5)

You can observe that the input value -5 has two output values. Then it is not a function.

Answer 2
Answer:

For a set of data to be a function each x value has to have different y values.

A. (2,4), (-5, 6), (2, 3), (-6, 2)

B. (8, 1), (-5, 4), (2, 1), (8, 2)

D.(2,0).(-5, 3), (8, 1), (-5,5)

The bolded coordinates are the ones of each data set that makes it not a function. As you can see the x values all have different y values.

This leaves C. as the answer!

Hope this helped!


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The faces of a cube are numbered 1-6. if the cube is tossed once what is the probability that a prime number or a number divisible by 2 is obtained

Answers

Answer:

Prime Numbers 2, 3, 5

Divisible by 2 - 2, 4, 6

One is NOT a prime number.

So, there are 5 out of 6 numbers that are even or are prime.

This leaves only 1 number that isn't.

So, the probability is 5/6 that the number rolled will be prime or even.

Step-by-step explanation:

If f(x)=3+x/x-3, What is f(a+2)

Answers

Step-by-step explanation:

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

Substituting x = a+2, we get

f(a + 2) =  (3 + (a + 2))/((a + 2) - 3)  \n f(a + 2) =   (a + 5)/(a - 1)

which is the final answer.

Please mark Brainliest if this helps!

Answer:

f(a + 2)= (5 + a) / (a - 1) or f(a+2)= (a+5)/(a-1)

Step-by-step explanation:

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

To evaluate f(a+2), simply replace the x with a+2

f(a+2) = (3 + a+2)/(a+2 - 3)= (a+5)/(a-1)

or

To answer items such as this, we directly substitute the a + 2 to the all the x's in the function:

f(a + 2) = (3 + a + 2) / (a + 2 - 3)

Simplifying the function generated above:

f(a + 2) = (5 + a) / (a - 1)

Is this expression x+2x+3 equivalent to the expression 3(x+1)

Answers

x+2x+3=3x+3 \n3(x+1)=3 * x + 3 * 1 =3x+3 \n \nx+2x+3=3(x+1)

Yes, they are equivalent.
x+2x+3=3x+3=3(x+1)\Rightarrow \hbox{ YES}

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Answers

Answer:

x = - 7

Step-by-step explanation:

Given the 2 equations

y - x = 9 → (1)

10 + 2x = - 2y → (2)

Rearrange (1) expressing x in terms of y by adding x to both sides

y = x + 9

Substitute y = x + 9 into (2)

10 + 2x = - 2(x + 9) ← distribute

10 + 2x = - 2x - 18 ( add 2x to both sides )

10 + 4x = - 18 ( subtract 10 from both sides )

4x = - 28 ( divide both sides by 4 )

x = - 7

PLEASE HELP ME ASAP 10 POINTS

Answers

To find the surface are, we can add up the area of all of the sides.

Top:
4in x 9in = 36in^2

Bottom:
4in x 9in = 36in^2

Front:
5in x 9 in = 45in^2

Back:
5in x 9 in = 45in^2

Right:
4in x 5in = 20in^2

Left:
4in x 5in = 20in^2

Adding them all together:
36+36+45+45+20+20 = 202in^2

The surface area of the prism is 1. 202 in^2

Kent sells crates of bottled soda. For every crate he sells, he makes $3.14. Last week, Kent sold 41 crates of bottled soda. How much money did he make?

Answers

Number of soda crates sold by Kent last week = 41
Amount made by Kent for selling each crate = $3.14
Amount made by Kent by selling 41 crates = (3.14 * 41) dollars
                                                                     = (314/100) * 41 dollars
                                                                     = 12874/100 dollars
                                                                     = 128.74 dollars
So the amount of money Kent makes by selling 41 crates of soda bottle is $128.74. this is the easiest way of solving such type of problems. I hope this method will help you to solve these kind of problems in future without requiring any help from others.
Crates = 41
1 crate = 3.14
 41 × 3.14 = 128.74
 
So, on 41 crates of bottled sodas he makes $128.74.
 
Hope I helped ya!!