How do I do Question 9?

Mathematics

2 answers:

saw5 [17]3 years ago

5 0

Answer:

$9.30 x 30 minutes and $9:30 x 5 hours

Step-by-step explanation:

Brums [2.3K]3 years ago

3 0

If I did the math right it should be: he should earn $186. Hopefully I was helpful.

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 $x^2 + 4x + 4 = 18 \\ \\ x^2+4x+4-18= 0 \\ \\ x^2+4x-14=0 \\ \\ x_1_y_2= \dfrac{-b\pm \sqrt{b^2-4ac} }{2a} \qquad a= 1\qquad b= 4\qquad c= -14 \\ \\ \\ x_1_y_2= \dfrac{-4\pm \sqrt{4^2-4(1)(-14)} }{2(1)} \\ \\ \\ x_1_y_2= \dfrac{-4\pm \sqrt{16-(-56)} }{2} \\ \\ \\ x_1_y_2= \dfrac{-4\pm \sqrt{72} }{2} \\ \\ \\ x_1= \dfrac{-4+ \sqrt{72} }{2} \qquad\qquad x_2= \dfrac{-4+ \sqrt{72} }{2}\\ \\ \\ x_1= \dfrac{-4+ \sqrt{2^3*3^2} }{2} \qquad\qquad x_2= \dfrac{-4- \sqrt{2^3*3^2} }{2}$

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if employee a logged 120 hours of travel in four years and employee b logged of travel at a 20% higher rate how many more hours

Gnoma [55]

First we need to find the rate of logging for employee A per year. To do this, the number of hours can be divided by the number of years to find out how many hours of travel they log per year.

120 ÷ 4 = 30. Employee A logs roughly 30 hours of travel per year.

To find a percentage increase of 20%, you need to multiply by 1.2.
30 x 1.2 = 36.
Therefore, Employee B logs roughly 36 hours of travel per year.

To find out how many hours of travel Employee B logs after 1.5 years, we simply need to multiply 36 by 1.5, which equals 54.

To find out how many hours of travel Employee A logs after 1.5 years, we simply need to multiply 30 by 1.5, which equals 45.

Finally, we need to find out how many MORE hours Employee B logged after 1.5 years compared to Employee A. To do this, we simply need to do 54 - 45 = 9 hours.

Working = (((120/4) x 1.2) x 1.5) - (120/4 x 1.5)
Answer = 9 hours.

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