3 years ago

Which relation describes a function?

Mathematics

1 answer:

Leviafan [203]3 years ago

4 0

B is correct, because there is only 1 output for each input.

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B is the midpoint of AC. What is the length of AB? AB is 9x+7 and BC is -3x+20

ahrayia [7]

<h3>Answer:</h3>

$AB = \frac{67}{4}\\$

<h3>Step-by-step explanation:</h3>

If $B$ is the midpoint of $\overline{AC}$ then $AB$ is just half of $AC$ and also, $BC$ is just half of $AC$ . This means that $AB$ must be equal to $BC$ . Essentially, $9x +7 = -3x +20$ and we can solve for the of $x$ from that equation.

$9x +7 = -3x +20 \\ 9x +7 +3x = -3x +20 +3x \\ 12x +7 = 20 \\ 12x +7 -7 = 20 -7 \\ 12x = 13 \\ \frac{12x}{12} = \frac{13}{12} \\ x = \frac{13}{12}$

Now we can solve for $AB$

$AB = 9(\frac{13}{12}) +7 \\ AB = 3(\frac{13}{4}) +7 \\ AB = \frac{39}{4} +7 \\ AB = \frac{39}{4} +\frac{28}{4} \\ AB = \frac{67}{4}$

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2 years ago

a pet store advertises a 30% off sale on dog crates. what is the regular price of a large crate that costs $85.50 on sale ?

lyudmila [28]

Answer:

$285

Step-by-step explanation:

30% of 285 is 85.50

Hope this helps! :)

8 0

3 years ago

A gumball machine contains 23 Green gumballs 52 red gum balls 34 blue gum balls 61 yellow gumballs and 30 pink gumballs what per

bulgar [2K]

All you need to do is add up all the gumballs, which is 201, then divide the number of red gumballs by the total amount.

201/52 = %26

4 0

3 years ago

Plz help me solve this

Sidana [21]

The answer is C, lmk if i helped

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3 years ago

Will give brainliest if correct

irakobra [83]

Answer:

The mean is 6.7

The median is 6.5

The mode is 10

The range is 7

8 0

3 years ago