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deff fn [24]
3 years ago
11

Charlotte is working two summer jobs, making $21 per hour tutoring and $14 per hour clearing tables. Last week Charlotte worked

twice as many hours tutoring as she worked hours clearing tables hours and earned a total of $168. Graphically solve a system of equations in order to determine the number of hours Charlotte worked tutoring last week, x,x, and the number of hours Charlotte worked clearing tables last week, yy.
Mathematics
1 answer:
kramer3 years ago
4 0

Answer: this is the answer please follow to the explanation

Step-by-step explanation:

21x + 14y = 168. X=2y

14y = -21x +168. 2y=x

14 divided by 14 on one side and

-21 + 168 divided by 14 on the other side

You should get...

Y= -3/2x +12

For part 2 where they want you to put the 2 numbers in, you should put the point they intercept which is (6,3).

Well, have a good day

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Javier volunteers in community events each month. He does not do more than five events in a month. He attends exactly five event
enot [183]

Answer:

P(x < 3) = 25\%

E(x) = 3

Step-by-step explanation:

The given parameters can be represented as:

\begin{array}{ccccccc}x & {5} & {4} & {3} & {2} & {1}& {0} & P(x) & {25\%} & {30\%} & {20\%} & {15\%} & {5\%} & {5\%} \ \end{array}

Solving (a): P(x < 3)

This is calculated as:

P(x < 3) = P(x = 0) + P(x = 1) + P(x =2) ----- i.e. all probabilities less than 3

So, we have:

P(x < 3) = 5\% + 5\% + 15\%

P(x < 3) = 25\%

Solving (b): Expected number of events

This is calculated as:

E(x) = \sum x * P(x)

So, we have:

E(x) = 5 * 25\% + 4 * 30\% + 3 * 20\% + 2 * 15\% + 1 * 5\% + 0 * 5\%

E(x) = 125\% + 120\% + 60\% + 30\% + 5\% + 0\%

E(x) = 340\%

Express as decimal

E(x) = 3.40

Approximate to the nearest integer

E(x) = 3

3 0
3 years ago
A person has eaten 2/5 of a cake. When his family comes he wants to split it even with 10 people. How much of the cake will each
sergij07 [2.7K]
Each person will get 3/5 of the cake
6 0
3 years ago
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Evaluate 4x power of 3 +4x when x=3
viva [34]

\text{Hey there!}

\text{Evaluate:\ }\bf{4x^3+4x}\text{ if x = 3}

\text{If we know what the x-value is then replace the x with 3}

\bf{4(3)^3+4(3)}

\bf{4(3)^3+12}

\text{4 = 4}

\bf{3^3=27}

\text{4(3) = 12}

\text{4(27) + 12}

\text{4(12)=108}

\text{108 + 12 = 120}

\boxed{\boxed{\text{Answer: 120}}}\checkmark

\text{Good luck on your assignment and enjoy your day!}

~\frak{LoveYourselfFirst:)}

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Answer:

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Step-by-step explanation:

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3 years ago
How to write (-4,5) and (0,-4) in y=mx+b
anzhelika [568]

Answer:

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3 years ago
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