All categories

3 years ago

Which of these sets of ordered pairs represent a function

Mathematics

2 answers:

Elodia [21]3 years ago

8 0

Both a and b are functions.

GuDViN [60]3 years ago

6 0

Both a and b are functions. for it to be a function, you can only have 1 y value per x value.

this is not a function because 1 has 2 y values
(1,3)(2,5)(1,4)(3,2)

You might be interested in

g A report on the nightly news broadcast stated that 10 out of 108 households with pet dogs were burglarized and 20 out of 208 w

Naya [18.7K]

Answer:

Test statistic |Z| = 0.1040 < 1.96 at 0.05 level of significance

Step-by-step explanation:

Step(i):-

Given that a report on the nightly news broadcast stated that 10 out of 108 households with pet dogs were burglarized

First proportion

$p_{1} = \frac{x_{1} }{n_{1} } = \frac{10}{108} = 0.0925$

Given that a report on the nightly news broadcast stated that 20 out of 208 households without pet dogs were burglarized

Second proportion

$p_{2} = \frac{x_{2} }{n_{2} } = \frac{20}{208} = 0.0961$

where

$P = \frac{n_{1}p_{1} +n_{2}p_{2} }{n_{1} +n_{2} }$

P = 0.09486

Q = 1 - P = 1 - 0.09486 = 0.90514

Step(ii):-

Test statistic

$Z = \frac{p_{1}-p_{2} }{\sqrt{PQ(\frac{1}{n_{1} } +\frac{1}{n_{2} } )} }$

$Z = \frac{0.0925-0.0961 }{\sqrt{0.09486 X 0.90514(\frac{1}{108 } +\frac{1}{208 } )} }$

Z = -0.1040

|Z| = |-0.1040|

|Z| = 0.1040

Critical value Z = 1.96 at 0.05 level of significance

6 0

3 years ago

Factor each expression below. a. 16x − 4 = b. −10x 5x2 = c. 30y − 24x =

Artyom0805 [142]

A) Answer:

4 (4x - 1)

B) Answer:

-5x ( 2 + x )

C) Answer:

6 (5y - 4x)

hope it helped.

4 0

3 years ago

Emily researched the average prices of desktop PCs worldwide since 2000. She could only find data from 2005 to 2010. She created

gregori [183]

Answer: There is a linear relationship between the average price of PCs and the number of years that have passed since 2000.

Step-by-step explanation:

From the given graph, we can see there is a straight line , which shows that there is a linear relationship between both quantities.

As the number years increases the average price of PCs decreases.

The given equation of the line is $y=-39x+998$ , which shows that the slope of the line is -39, i.e the rate of decrease in the average price of PCs with respect to the the number of years that have passed since 2000.

7 0

3 years ago

To test Upper H 0 : sigma equals 1.6 versus Upper H 1 : sigma less than 1.6, a random sample of size n equals 21 is obtained fr

kicyunya [14]

Answer:

Answer: is answer hope this helps

Step-by-step explanation:

8 0

3 years ago

using 3.14 for pi what is the circumference of a circle with a radius of 6cm, show ur work PLEASE /using 3.14 for pi what is the

Illusion [34]

PT 1
the circumference of a circle is always pi times the diameter. The diameter is 2 times the radius, because diameter is all the way across the circle, whereas radius is from the center of the circle to the edge. Anyways, if the radius is 6, multiply it by 2 and you get 12, so 3.14 times 12 is 37.68, which is the answer.
PT 2
diameter=9 cm. So, just do 9 times 3.14. (diameter times pi = circumference.)
(2*radius times pi = circumference.)
9 times 3.14 is 28.26
:3

6 0

4 years ago

Read 2 more answers