2 years ago

Substitute to solve Brainliest for correct answer

Mathematics

2 answers:

Ostrovityanka [42]2 years ago

8 0

Answer:

4x-1y=3xy

Step-by-step explanation:

because 3-2=1 and add the y on and the do 4x-1y and that will = 3xy

Marina86 [1]2 years ago

3 0

Answer:

x=4, y=6

Step-by-step explanation:

hope that helps :)

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Andrew [12]

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2 years ago

1. If a = -1 , the value of3a + 1 is

erastovalidia [21]

Answer:

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Therefore, <em><u>-2</u></em> is the right answer.

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Reil [10]

Answer:

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Step-by-step explanation:

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Jaerd made 12 3/4 cups of snack mix for a party. His guest ate 2/3 of the mix. How much snack did his guest eat

77julia77 [94]

Answer:

8 1/2 cups

Step-by-step explanation:

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A sign on the pumps at a gas station encourages customers to have their oil checked, and claims that one out of 10 cars needs to

Archy [21]

Answer:

0.2916, 0.1488, 0.0319

Step-by-step explanation:

Given that a sign on the pumps at a gas station encourages customers to have their oil checked, and claims that one out of 10 cars needs to have oil added.

Since each trial is independent there is a constant probability for any random car to need oil is 0.10

Let X be the number of cars that need oil

A) Here X is BIN(4,0.1)

$P(X=1) = 4C1(0.1)(0.9)^3 \\= 0.2916$

B) Here X is Bin (8, 0.1)

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C) Here X is Bin (20,5)

$P(x=5) = 20C5 (0.1)^5 (0.9)^{15} \\=0.0319$

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2 years ago