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2 years ago

7 less than a number is 20

Mathematics

2 answers:

Shalnov [3]2 years ago

5 0

Answer:

x-7=20

Step-by-step explanation:

the equation would be written like it it above ^

the answer would be x=27

sesenic [268]2 years ago

4 0

Answer:

7 - x = 20 hope this helps!!

Step-by-step explanation:

can Iget brainliest?? ;P

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Answer:

a) E(y) = 0.8

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Step-by-step explanation:

We are given the following distribution in the question:

y: 0 1 2 3

P(y): 0.50 0.25 0.20 0.05

a) E(y)

$E(y) = \displaystyle\sum y_iP(y_i)\\\\E(y) = 0(0.50)+1(0.25)+2(0.20)+3(0.05)\\E(y) = 0.8$

b) Expected value of subcharge

Subcharge =

$\$110y^2$

Expected value of subcharge =

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2 years ago

2.072539 rounded to the nearest hundredth

zalisa [80]

Answer:

2.07

Step-by-step explanation:

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3 years ago

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Mabel is comparing the prices of two car rental companies. Company A charges $35 per day and an additional $15 as service charge

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Answer:

Part A:

Equation for Company A:

x = Number of days renting a car

35x + 15

Equation for Company B:

x = Number of days renting a car

42x + 10

Part B:

Company A will charge $ 37 less than Company B

Part C:

Company A will charge $ 65 less than Company B

Step-by-step explanation:

Part A:

Equation for Company A:

x = Number of days renting a car

35x + 15

Equation for Company B:

x = Number of days renting a car

42x + 10

Part B:

Renting a car for 6 days

Company A:

35 * 6 + 15 = 210 + 15 = $ 225

Company B:

42 * 6 + 10 = 252 + 10 = $ 262

Company A will charge $ 37 less than Company B

Part C:

Renting a car for 10 days

Company A:

35 * 10 + 15 = 350 + 15 = $ 365

Company B:

42 * 10 + 10 = 420 + 10 = $ 430

Company A will charge $ 65 less than Company B

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3 years ago