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Brrunno [24]
3 years ago
8

Which of the following lists of ordered pairs is a function?

Mathematics
2 answers:
likoan [24]3 years ago
4 0
A. (1, 2), (0, 3), (1, 4), (6, 5)
It's not a function, becouse:
(1, 2): 1 ⇒ 2 and (1, 4) - 1 ⇒ 4

B. (9, 4), (5, 0), (1, -4), (-2, -6)
It's a function

C. (4, 2), (4, -2), (9, 3), (16, 4)
It's not a function, becouse:
(4, 2): 4 ⇒ 2 and (4, -2): 4 ⇒ -2

D. (9, 4), (5, 0), (5, 3), (-2, -6)
It's not a function, becouse:
(5, 0): 5 ⇒ 0 and (5, 3): 5 ⇒ 3
Zigmanuir [339]3 years ago
4 0
So a function is basically the x values don't repeat with any differnt y values
(x,y)

the first number should never repeat with a differnt y value

A. 1 repeats with2 and 4, not a function
B.. no repeat, it's a function
C. 4 repeats with 2 and -2,not a function
D. 5 repeats with 0 and 3, not a function


answer is B
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The histogram shows the 9th grade shoe sizes at a Lakeview High School. Which inequality correctly describes the relationship be
Nikitich [7]

Answer:

I think it might be B a mean is bigger than the median

6 0
3 years ago
What percentage of students under age 15 travel to school by car? Round to the nearest whole percent. 11% 18% 41% 80%
bixtya [17]

Answer:

11%

Step-by-step explanation:

We need to fill the missing cells of the table first and are interested in first row for under age 15

1. 152- 65= 87 for the top left cell

2. 165- (87+60)= 18 for car column on same row

now we have number 18 and the total of the first row is 165:

  • 18/165*100%= 10.9%

So the first choice- 11% is the answer

3 0
3 years ago
For all values of x
Yuliya22 [10]

Answer:

A.) gf(x) = 3x^2 + 12x + 9

B.) g'(x) = 2

Step-by-step explanation:

A.) The two given functions are:

f(x) = (x + 2)^2 and g(x) = 3(x - 1)

Open the bracket of the two functions

f(x) = (x + 2)^2

f(x) = x^2 + 2x + 2x + 4

f(x) = x^2 + 4x + 4

and

g(x) = 3(x - 1)

g(x) = 3x - 3

To find gf(x), substitute f(x) for x in g(x)

gf(x) = 3( x^2 + 4x + 4 ) - 3

gf(x) = 3x^2 + 12x + 12 - 3

gf(x) = 3x^2 + 12x + 9

Where

a = 3, b = 12, c = 9

B.) To find g '(12), you must first find the inverse function of g(x) that is g'(x)

To find g'(x), let g(x) be equal to y. Then, interchange y and x for each other and make y the subject of formula

Y = 3x + 3

X = 3y + 3

Make y the subject of formula

3y = x - 3

Y = x/3 - 3/3

Y = x/3 - 1

Therefore, g'(x) = x/3 - 1

For g'(12), substitute 12 for x in g' (x)

g'(x) = 12/4 - 1

g'(x) = 3 - 1

g'(x) = 2.

5 0
2 years ago
1.What is the principal which would amount to $6 900 in 3 years at 5% simple interest per annum?Required to answer. Single choic
Jobisdone [24]

Answer:

c

Step-by-step explanation:

I just looked up the question

8 0
2 years ago
9.48 as a mixed number in simplist form
mafiozo [28]

Answer:

<h2>9 12/25.</h2>

Step-by-step explanation:

9.48 as a mixed number in simplest form:

<em><u>948/100</u></em>

<em><u>948/100= 948 ÷ 4/100 ÷ 4</u></em>

<em><u>948/100= 948 ÷ 4/100 ÷ 4= 237/25</u></em>

<em><u>948/100= 948 ÷ 4/100 ÷ 4= 237/25= 9 12/25</u></em>

<u>9 12/25 is the mixed number.</u>

8 0
3 years ago
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