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3 years ago

Which one if these sets of ordered pairs is not a function ? help please

Mathematics

1 answer:

abruzzese [7]3 years ago

7 0

A function has only one y-value for each x-value. If you find a set that has an x-value used more than once, it is not a function, because that x-value is now paired with more than one y-value.

The fourth answer is the only one that has the same x-value used more than once.

Side note: Don’t worry if a y-value is used more than once. That’s totally fine. It’s all about the x-values.

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The following list shows how many brothers and sisters some students have: 3, 4, 3, 5, 6, 2, 5, 4, 5, 4, 6, 5, 3 State the mode.

omeli [17]

I believe the mode is 5 because there are four 5’s which is the most of a certain number in this list.

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2 years ago

Can u please help me i dont get it please thank u soo much

Bumek [7]

12pm: -3° + 4° = 1°

7pm: 1° - 5° = -4°

the answer is C.

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3 years ago

HELP ASAP True or False: The church was able to perform all of Palestrina’s masses.

jek_recluse [69]

Answer:

true

Step-by-step explanation:

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2 years ago

Read 2 more answers

Help please, what’s: 5x-7+2-2x=-26

svetoff [14.1K]

Answer:

Let's solve your equation step-by-step.

5x−7+2−2x=−26

Step 1: Simplify both sides of the equation.

5x−7+2−2x=−26

5x+−7+2+−2x=−26

(5x+−2x)+(−7+2)=−26(Combine Like Terms)

3x+−5=−26

3x−5=−26

Step 2: Add 5 to both sides.

3x−5+5=−26+5

3x=−21

Step 3: Divide both sides by 3.

−21

x=−7

Answer:

x=−7

3 0

3 years ago

Read 2 more answers

I don’t understand this one

Masja [62]

Answer:

see below

Step-by-step explanation:

Put -1 where x is in each expression and evaluate it.

You will find that the expression is zero when the numerator is zero. And you will find the numerator is zero when it has a factor that is equivalent to ...

(x +1)

Substituting x=-1 into this factor makes it be ...

(-1 +1) = 0

Evaluating the first expression, we have ...

$\dfrac{4(x+1)}{(4x+5)}=\dfrac{4(-1+1)}{4(-1)+5}=\dfrac{4\cdot 0}{1}=0$

This first expression is one you want to "check."

You can see that the reason the expression is zero is that x+1 has a sum of zero. You can look for that same sum in the other expressions. (The tricky one is the one with the factor (x -(-1)). You know, of course, that -(-1) = +1.)

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3 years ago