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agasfer [191]
3 years ago
9

Rewrite x - 2y = 8 using function notation.

Mathematics
2 answers:
Vadim26 [7]3 years ago
7 0
Isolate for y.
x - 2y =8
x-8 = 2y
(x-8)/(2) = y
(x/2) - (8/2) = y
y = (1x/2) - (4)

f(x) = (1/2)x - 4
The answer is D.
hodyreva [135]3 years ago
4 0

Answer:

D) \displaystyle f(x) = \frac{1}{2}x - 4

Step-by-step explanation:

x - 2y = 8

- x - x

________

\frac{-2y}{-2} = \frac{-x + 8}{-2} \\ \\ y = \frac{1}{2}x - 4 → f(x) = \frac{1}{2}x - 4

I am joyous to assist you anytime.

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3 years ago
What is -0.75p-2=0.25p
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you move first the number without the variable to the other side with the opposite sign

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6 0
3 years ago
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There is a 0.9991 probability that a randomly selected 31​-year-old male lives through the year. A life insurance company charge
jarptica [38.1K]

Answer:

a) Monetary values corresponding to the two events are:

-In case of surviving the year = -166$

-In case of a death in the year = 89834$

b) Expected value of the purchasing the insurance is -85 $

c) Yes, insurance company can make a profit with this policy.

Step-by-step explanation:

<em>a)</em> The man need to pay 166$ first to enroll the insurance policy. If he survives within a year, he will lose 166$. Otherwise, if he dies within a year he will profit 89834$.

<em>b)</em> Expected value of the purchasing the insurance as following:

<u>-In case of surviving the year: </u>

Value: -166$

Probability: 0,9991

<u>-In case of death in a year </u>

Value: 89834$

Probability: 0,0009

Expected value is E(x) = -166×0,9991 + 89834×0,0009 = -85 $

<em>c)</em> Lets consider that 10000 different 31 year old man enrolled to this insurance policy. According to probability of death, 9 out of 10000 man expected to be dead within the year. Therefore, company need to pay 9*90000 = 810000$ to their costumers. But, company will collect 10000*166=1660000$ from their costumers in the beginning of the year

So, it is expected that company is going to profit 1660000-810000=850000$ per year.

4 0
3 years ago
2+2=4 then what is 4+4 ps. just get some brainly points
FinnZ [79.3K]

Answer:

8

Step-by-step explanation:

because yes.

5 0
3 years ago
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timurjin [86]
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