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coldgirl [10]
3 years ago
8

Which relations are functions?

Mathematics
1 answer:
pychu [463]3 years ago
5 0

For a relation to be a function every x value will have a single y value.

The first one has two x values of -2 but their y values are different so can’t be a function.

The second one has two 10’s with different y values so isn’t a function.

The 3rd one has 1 and -1 with the same y value, so isn’t a function.

The correct answer is the 4th choice

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Find the sum of the following
Arisa [49]
1) 23
2) -20
3) 2
4) -28
5) -11
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3 years ago
A clock chimes 4 times each hour. whixh expression can be used to find the number of times the clock chimes in a week
solong [7]

There are 24 hours in a day, so if it chimes twice in an hour it will chime 24*2 or 48 times a day. There are 7 days in a week, so it will chime 48*7 or 336 times.

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Your neighbor has decided to enlarge his garden. The garden is rectangular with width 6 feet and length 15 feet. The new garden
Nana76 [90]

Answer:

Original garden: 42 feet

Enlarged garden: 98 feet

Step-by-step explanation:

Perimeter = length (2) + width (2)

<u>Original perimeter:</u>

P = 15(2) + 6(2)

P = 30 + 12

P = 42 feet

In this problem, similar is proportional, so the new garden will be proportional to the old one.

If the original length was 15 and the new length is 35, then 15 would have had to have been multiplied by 2 1/3. That means you need to multiply 6 by 2 1/3, which is 14. That means the dimensions of the enlarged yard is 14 (width) × 35 (length).

<u>Enlarged perimeter</u>

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P = 98 feet

4 0
3 years ago
ANSWER QUICK!!!!
deff fn [24]

Answer:

C

Step-by-step explanation:

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A.twice as much as a number   2x

B.12 less than a number      x-12

C.half of a number is 15   1/2x =15

D.the difference of 20 and a number?  20-x

A,B, and D are expressions

8 0
3 years ago
Read 2 more answers
A(n)=-6-4(n-1) find the 4th term
egoroff_w [7]

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Step-by-step explanation:

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