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3 years ago

How do you factor n^2-4n=0

Mathematics

1 answer:

Sveta_85 [38]3 years ago

3 0

   n² - 4n = 0
n(n) - n(4) = 0
    n(n - 4) = 0
n = 0 or n - 4 = 0
   + 4 + 4
      n = 4

Solution Set: {0, 4}

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Translate the sentence into an equation. The sum of 3 times a number and 7 is 19.

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D. Because you're multiplying 3 by a number which is what the variable represents (n), then you're just adding 7 to that which equals 19 all together. It all translates to 3n+7=19.

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3 years ago

Dorji thought of a number. He first multiplied the number by 3 and then subtracted 12

jeyben [28]

Answer

The answer is 24

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3 years ago

A bag contains 11 numbered chips inside. Two chips are labeled 1, three are labelled 2, and six are labelled 3. Let the random v

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Answer: 2.36

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Using the μ=∑[x⋅P(X=x)

U will need to do

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6/11 because you have 6 labeled 3

Then you will do:

1 x 2/11 = 0.18

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Hope that helps, plz put a good rating

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2 years ago

A car company is going to issue new ID codes to its employees. Each code will have one digit followed by four letters. The lette

scoray [572]

2734375 employee ID codes can be generated

Solution:

Given that Each code will have one digit followed by four letters

The letter V and the digits 3, 4, and 5 will not be used

So, there are 25 letters and 7 digits that will be used

Assume that the letters can be repeated

Each code = 1 digit + four letters

digits 3 , 4 , 5 cannot be used

Therefore, the remaining digits are 1, 2, 6, 7, 8 , 9, 0

7 digits that will be used

One digit can be chosen from 7 digits in 7 ways

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Since given that letters can be repeated

The second letter can be chosen from 25 letters in 25 ways

Similarly, the third letter can be chosen from 25 letters in 25 ways

Similarly, the fourth letter can be chosen from 25 letters in 25 ways

Therefore, the total number of ways are:

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Thus 2734375 employee ID codes can be generated

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3 years ago

Identify the solution and graph of the given inequality. 34 > 3(2 − x)

Verizon [17]

Answer:

Solving the inequality we get x>-9.33

The graph is shown in figure attached.

Step-by-step explanation:

We need to solve the inequality: $34 > 3(2-x)$

Solving:

$34 > 3(2-x)\\$

Switching the sides , reversing the inequality and Multiply 3 with terms inside the bracket

$3(2-x)$

Subtract 6 from both sides

$6-3x-6$

Divide both sides by -3 and inequality will be reversed

$\frac{-3x}{-3} >\frac{-28}{3} \\x>\frac{-28}{3}\\x>-9.33$

Solving the inequality we get x>-9.33

The graph is shown in figure attached.

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3 years ago