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3 years ago

Which of the following lists of ordered pairs is a function ?

Mathematics

2 answers:

lianna [129]3 years ago

5 0

B. Because it doesn’t repeat in either x or y

Nitella [24]3 years ago

3 0

To be a function, for any X value( input) you can only have one Y(output value).

In A) there are two x values of 2, but each one has a different Y value, so this cannot be a function.

In C, there are two x values of 1, each with a different Y value, so also cannot be a function.

D) has two X values of 0, and each has a different Y value so cannot be a function.

The correct answer would be B.

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Solve for x. 2(x + 14) + x = 70a. 11b. 12c. 14d. 17

Mariulka [41]

Hello!

To solve for the variable x, we need to follow the rules of SADMEP. SADMEP is ONLY used when solving algebraic equations. SADMEP is an acronym for subtraction, addition, division, multiplication, exponents, and parentheses. Also, when solving for x, our main goal is to isolate x to one side of the equation.

2(x + 14) + x = 70 (use the distributive property)

2x + 28 + x = 70 (simplify - add)

3x + 28 = 70 (subtract 28 from both sides)

3x = 42 (divide both sides by 3)

x = 14

When solving ANY algebraic equation, we need check our answer. To check your answer, you substitute the x-value, which is 14 in this case, into the original equation and solve using PEMDAS.

2(x + 14) + x = 70 (substitute x = 14)

2(14 + 14) + 14 = 70 (simplify the terms inside the parentheses)

2(28) + 14 = 70 (simplify - multiply)

56 + 14 = 70 (simplify - add alike term)

70 = 70 | This is correct!

Therefore, your final answer is x = 14, which is choice C.

6 0

2 years ago

What is the area of a triangle<br> with the base of 20 inches and a<br> height of 6 inches?

Nonamiya [84]

Answer:

60 $in^{2}$

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

Find the coordinates of S after a rotation of the triangle 90 degrees counterclockwise about the origin

Neko [114]

We first start by finding the actual coordinates of the pre - image's point S.

Assuming the x and y axis count by 1s, as there is no labels, we can conclude that:

The point's x coordiate is 4 to the left from the origin, or -4.

The point's y coordinate is 4 up from the origin, or 4.

So, the coordinates of Point S is (-4, 4).

Next, we apply the translation rule for a 90 degree counterclockwise rotation to the point's coordinates. The rule is (x, y) --> (-y, x). Using this rule on our coordinates, we get:

(-4, 4) --> (-4, -4)

So, the new coordinates of point S prime after a 90 degree counterclockwise rotation are (-4, -4).

4 0

2 years ago

The final exam of a particular class makes up 40% of the final grade, and Moe is failing the class with an average (arithmetic m

amm1812

Answer:

%82.5

Step-by-step explanation:

The final exam of a particular class makes up 40% of the final grade
Moe is failing the class with an average (arithmetic mean) of 45% just before taking the final exam.

From point 1 we know that Moe´s grade just before taking the final exam represents 60% of the final grade. Then, using the information in the point 2 we can compute Moe´s final grade as follows:

$FG=0.40*FE+0.60*0.45$ ,