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stellarik [79]
3 years ago
5

The following list details the numbers of tickets sold for a talent show grade 9:22; grade 10:32; grade 11: 41; and grade 12:30.

What are the
domain and range of this relation?
A domain: (22, 32, 41, 30); range: {9, 10, 11, 12}
B. domain: {9, 22, 10, 32); range: {11, 41, 12, 30}
C. domain: {9, 10, 11, 12); range: (22, 32, 41, 30)
D
domain: {11, 41, 12, 30}; range: {9, 22, 10, 32)
Mathematics
1 answer:
Montano1993 [528]3 years ago
7 0

Answer: C. domain: {9, 10, 11, 12); range: (22, 32, 41, 30)

Step-by-step explanation:

The data set is:

(9, 22)

(10,32)

(11, 41)

(12, 30).

In the usual notation, the number at the left is the input (belons to the domain) and the number in the right is the output (belongs to the range).

Then the domain would be:

{9, 10, 11, 12}

and the range:

{22, 32, 41, 30}

The correct option is C

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A.645,473<br> B.2,151,575<br> C.8,175,987<br> D.10,542,719
ELEN [110]
21515754 people total* 0.38= 8175986.52 people

Final answer: C
3 0
4 years ago
1) 2x11 =<br> I don’t know how to do this
Fynjy0 [20]

Answer:

22, Twenty Two

Step-by-step explanation:

A good way to look at multiplying 11 is that the number, if it’s under 10, will then be two of that number. For instance, 4 x 11 = 44, 6 x 11 = 66, and so on and so forth.

Hope This Helped!

5 0
3 years ago
For what value of b do the lines bx+3y=10 and x–2y=4 intersect at a point on the x-axis?
MatroZZZ [7]

Answer:

b=2.5

Step-by-step explanation:

every point on x axis has y coordinate =0

so bx=10

x=4

4b=10

b=10/4=5/2=2.5

5 0
4 years ago
Solve the system using addion<br> 7x+2y=-13<br> -7x+y=25
larisa [96]

Answer:

x = -3

y = 4

Step-by-step explanation:

7x + 2y = -13

-7x + y = 25

3y = 12

-7x + y = 25

y = 4

-7x + 4 = 25

y = 4

-7x = 21

y = 4

x = -3

there is only 1 solution for this equation is (-3,4)

5 0
3 years ago
The amount of time a certain brand of light bulb lasts is normally distribued with a mean of 1300 hours and a standard deviation
Bezzdna [24]

Answer:

The interval of hours that represents the lifespan of the middle 68% of light bulbs is 1210 hours - 1390 hours.

Step-by-step explanation:

In statistics, the 68–95–99.7 rule, also recognized as the Empirical rule, is a shortcut used to recall that 68%, 95% and 99.7% of the values lie within one, two and three standard deviations of the mean, respectively.

Then,

  • P (µ - σ < X < µ + σ) = 0.68
  • P (µ - 2σ < X < µ + 2σ) = 0.95
  • P (µ - 3σ < X < µ + 3σ) = 0.997

he random variable <em>X</em> can be defined as the  amount of time a certain brand of light bulb lasts.

The random variable <em>X</em> is normally distributed with parameters <em>µ</em> = 1300 hours and <em>σ</em> = 90 hours.

Compute the interval of hours that represents the lifespan of the middle 68% of light bulbs as follows:

P (\mu - \sigma < X < \mu + \sigma) = 0.68\\\\P(1300-90

Thus, the interval of hours that represents the lifespan of the middle 68% of light bulbs is 1210 hours - 1390 hours.

4 0
3 years ago
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