All categories

3 years ago

Is the following relation a function? {(3, 2), (3, −2), (1, −4), (−1, 2)}

Mathematics

1 answer:

Ksivusya [100]3 years ago

8 0

Step-by-step explanation:

no it is not because if 3 maps on 2, then it cannot map on -2 at the same time

You might be interested in

Can someon tell me which one it is

podryga [215]

The correct answer is second one

5 0

3 years ago

For the function F defined by F(x) = x2 – 2x + 4, find F(b+3).

Ivanshal [37]

Answer:

$\displaystyle F(b + 3) = b^2 + 4b + 7$

Step-by-step explanation:

We are given the function:

$\displaystlye F(x) = x^2 - 2x + 4$

And we want to find F(<em>b</em> + 3).

We can substitute:

$\displaystyle F(b + 3) = (b + 3)^2 - 2(b+3) + 4$

Expand:

$\displaystyle = (b^2 + 6b + 9) + (-2b -6) + 4$

Rearrange:

$\displaystyle = (b^2) + (6b-2b) + (9 - 6 + 4)$

Combine like terms. Hence:

$\displaystyle = b^2 +4b + 7$

In conclusion:

$\displaystyle F(b + 3) = b^2 + 4b + 7$

6 0

3 years ago

Write the expression in words. three times, four plus two, to the second power

OverLord2011 [107]

Youve already written it in words though

8 0

3 years ago

Solve the system of linear equations using any method 6x+6y=-6, 5x+y=-13

Sergio [31]

Answer:

x=-3

y=2

Step-by-step explanation:

To solve this problem you can use the elimination method:

- Multiply the second equation by -6:

$(-6)5x+y=-13\\-30x-6y=78$

- Add both equations:

$6x+6y=-6\\-30x-6y=78\\-------\\-24x=72\\x=-3$

- Substitute the value of x into one of the original equations and solve for y:

$6(-3)+6y=-6\\-18+6y=-6\\6y=12\\y=2$

8 0

3 years ago

Read 2 more answers

Sonya and her family went to dinner. The cost of the meal was $47.28. They left a 15% tip. What was the total amount sonyas fami

chubhunter [2.5K]

Answer:

$54.37

Step-by-step explanation:

First, need to find 15% of 47.28.

47.28 x .15 = 7.092

Then we add that to the original cost.

47.28+7.092 = 54.372

Round your answer

$54.37

Hope this helped!

3 0

3 years ago