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2 years ago

F(x) is a function. A. True B. False

Mathematics

2 answers:

pogonyaev2 years ago

7 0

I’m pretty sure it’s true

lina2011 [118]2 years ago

4 0

Answer:

True, this is a function

Step-by-step explanation:

There is a 1 to one correspondence between x and y

Each x goes to one y, so this is a function

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Find the value of a and of b for which<br>(a) the solution of x2 + ax < b is<br>-2<x < 4

KengaRu [80]

Answer: $a = -2$

$b = 8$

Step-by-step explanation:

Given :

$x^{2} +ax$

re - writing the equation , we have

$x^{2} +ax-b$

we need to find the value of a and b for which -2<x < 4 , this means that the roots of the quadratic equation are -2<x < 4.

The formula for finding the quadratic equation when the roots are known is :

$x^{2}$ - sum of roots(x) + product of root = 0

sum of roots = -2 + 4 = 2

product of roots = -2 x 4 = -8

substituting into the formula , we have:

$x^{2} -2x-8=0$ , which could be written in inequality form as

$x^{2} -2x-8$

comparing with $x^{2} +ax-b$ , it means that :

$a = -2$

$b = 8$

3 0

2 years ago

Write <br> 2/9 as a repeating decimal.

grigory [225]

Answer:

.2 repeating

Step-by-step explanation:

if you are allowed to use calculators, then do so, if not, you're going to have to do a lot of division

8 0

2 years ago

Read 2 more answers

Answer for 35 points but work out problems please

OlgaM077 [116]

IDK!!!!! EXPLAIN AND SPECIFY!!!!

8 0

2 years ago

Help please. 10 points to who help me

Lelechka [254]

9514 1404 393

Answer:

64/109 ≈ 0.5872

Step-by-step explanation:

41 + 23 = 64 of the events have outcome E.

An additional 35 + 10 = 45 do not.

The probability of an outcome of E is 64 out of a total of 64+45 = 109 events.

P(E) = 64/109 ≈ 0.5872

4 0

2 years ago

Sarah is saving for a vacation. She kept track of how much she saved each month over the last six months in the following table.

ohaa [14]

You will add them all together, then multiply the sum by 6.
713/6 = 118.833333
this rounded to the nearest hundredth
$118.83 per month

4 0

2 years ago