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choli [55]
3 years ago
14

Which of the following relations represent a function? A. {(-1,-1),(0,0),(2,2),(5,5)}. B. None of these. C. {(0,3),(0,-3),(-3,0)

,(3,0). D. {(-2,4),(-1,0),(-2,0),(2,6)
Mathematics
1 answer:
Cerrena [4.2K]3 years ago
3 0

Answer:

  A

Step-by-step explanation:

In a list of ordered pairs, a relation that is a function will not have any repeated x-values.

A -- a function (x-values are {-1, 0, 2, 5} with no repeats)

B -- irrelevant

C -- not a function (x-values are {0, 0, -3, 3} with 0 being repeated)

D -- not a function (x-values are {-2, -1, -2, 2} with -2 being repeated)

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A group of 70 people attended a ball game. There were four times as many children as adults in the group. Set up a system of equ
anzhelika [568]

Answer:

4b+b=70

5b=70

b=14

Step-by-step explanation:

4(14)+(14)=70

3 0
3 years ago
What is the value of g?<br> −5+7g=3g+9<br> A.) g=−1<br> B.) g = 1<br> C.) g=125<br> D.) g=312
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Answer:

The answer is D

Step-by-step explanation:

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The expression for the distance traveled is rt where r represents rate and t represents time.
astraxan [27]

I don't really get what the "35,000 feet university sea level" part is saying, but without it, the answer would be:

3.5 x 550 = 1,925

The plane traveled 1,925 miles.

And with it, the answer would be:

3.5 x 550 = 1,925

35,000 ft = 6.6 mi

1,925 + 6.6 = 1,931.6

The plane traveled 1,931.6 miles.

Hope this helped a little at least.

8 0
3 years ago
The total sales of a company (in millions of dollars) t months from now are given by S(t) = 0.03t3 + 0.5t2 + 9t + 4. Find S'(t).
o-na [289]

Answer:

S'(t) = 0.09t^2 + t + 9

S(2) = 24.24

S'(2) = 11.36

S(11) = 203.43 means that the sales of the company 11 months from now is $203,430,000.

S'(11) = 30.89 means that, 11 months from now, the rate at which sales change is $30,890,000 per month

Step-by-step explanation:

The derivate of the sales function S'(t) , which is the rate at which sales vary with time in months, is:

\frac{dS(t)}{dt} =S'(t) = 0.09t^2 + t + 9

S(2) is found by applying t=2 to S(t):

S(2) = 0.03*(2^3) + 0.5*(2^2) + 9*2 + 4\\S(2)= 24.24

S'(2) is found by applying t=2 to S'(t):

S'(2) = 0.09*(2^2) + 2 + 9\\S'(2) = 11.36

Since the sales function gives the amount of sales in millions of dollars,

S(11) = 203.43 means that the sales of the company 11 months from now is $203,430,000.

S'(t) represents the rate of change in sales in millions of dollars per month.

S'(11) = 30.89 means that, 11 months from now, the rate at which sales change is $30,890,000 per month

8 0
3 years ago
PLEASE HELP!! what is the surface area of a cylinder with a radius of 7 and a height of 32? Note: Answer must not be fraction or
Anton [14]

Area = 2pi*r*h + 2pi*r^2
Area = 2pi*r(h + r)
 
radius of 7 in and a height of 32 in


 Area = 14pi*39 = 546pi in^2

8 0
3 years ago
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