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3 years ago

Inverse of f(x)=2x+7

Mathematics

1 answer:

nekit [7.7K]3 years ago

6 0

Answer: f^-1(x) = x/2-7/2

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Father's age is 3 times the sum of ages of his two children. After 5 years his age will be twice the sum of ages of two children

ra1l [238]

Answer:

45 is the father's age

Step-by-step explanation:

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2 years ago

Suppose a three-seat city council election. For each seat, one progressive and one conservative is running, and voters must choo

Kitty [74]

Answer:

The probability that conservative party wins all 3 seats is 0.216

The probability that conservative party wins exactly two seats is 0.432

Step-by-step explanation:

Consider the provided information.

The probability of a conservative candidate winning is p=0.6.

The probability of one progressive candidate will win is: 1-0.6=0.4

Part (a) What is the probability that the conservative party wins all three seats?

According to binomial distribution: $b(x; n, p) =^nC_xp^x(1- p)^{n-x}$

$P(x=3) =^3C_3(0.6)^3 (0.4)^{3-3}$

$P(x=3) =(0.6)^3$

$P(x=3)=0.216$

P(conservative party wins all 3 seats) = 0.216

Hence, the probability that conservative party wins all 3 seats is 0.216

Part (a) What is the probability that the conservative party wins exactly two seats?

$P(x=2) =^3C_2(0.6)^2 (0.4)^{3-2}$

$P(x=2) =3(0.36)(0.4)$

$P(x=2) =0.432$

Hence, the probability that conservative party wins exactly two seats is 0.432

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3 years ago

The legs of an isosceles right triangle both measure 10 inches. Find the length of the hypotenuse.

gavmur [86]

Answer:

14.14

Step-by-step explanation:

10^2 + 10^2 = c^2

100 + 100 = c^2

200 = c^2

c = 14.14

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3 years ago

PLEASE HELP I need this like rn!!!

butalik [34]

Answer:

Step-by-step explanation:

360 is going to be what you have to end up with. Add all of the numbers you have then subtract 360 and whatever you get that's your anserw

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2 years ago

You wash dishes for a chemistry laboratory to make extra money for laundry. You earn 12 dollars/ hour, and each shift lasts 75 m

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It would pay with 3 loads

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3 years ago

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