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Ket [755]
3 years ago
15

Solve the equation. −4x+3=19

Mathematics
2 answers:
algol133 years ago
7 0

Answer:

\large\boxed{x=-4}

Step-by-step explanation:

-4x+3=19\qquad\text{subtract 3 from both sides}\\\\-4x+3-3=19-3\\\\-4x=16\qquad\text{divide both sides by (-4)}\\\\\dfrac{-4x}{-4}=\dfrac{16}{-4}\\\\x=-4

nordsb [41]3 years ago
7 0

Step 1: Combine like terms ( 3 and 19) by subtracting 3 to both sides

-4x + (3-3) = 19 -3

-4x = 16

Step 2: Isolate x by dividing -4 to both sides

\frac{-4x}{-4} =\frac{16}{-4}

x = -4

Hope this helped!

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lbvjy [14]

Answer:

Step-by-step explanation:

3x + 1 =  10

3x = 10 - 1

3x = 9

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hope this helps

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5 0
3 years ago
What's the markdown price of this red dress
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3 0
3 years ago
Dorothy Little purchased a mailing list of 2,000 names and addresses for her mail order business, but after scanning the list sh
DaniilM [7]

Answer:

b) 2.00

Step-by-step explanation:

For each name, there are only two possible outcomes. Either it is authentic, or it is not. The probability of a name being authentic is independent of any other name. This means that we use the binomial probability distribution to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

The expected value of the binomial distribution is:

E(X) = np

She randomly selects five names from the list for validation.

This means that n = 5

40% of the names on the list are non-authentic

This means that p = 0.4

The expected (average) value of x is

E(X) = np = 5*0.4 = 2

The correct answer is given by option B.

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Read 2 more answers
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