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scoundrel [369]
3 years ago
10

PLEASE HELP FAST!!!

Mathematics
1 answer:
maks197457 [2]3 years ago
4 0
Using the elimination method, multiply the first equation by 60 and the second one by 30 (least common denominators)

30x-45y=11...(1)
12x+5y=9...(12)

Multiply the second equation by 9, to eliminate y

30x-45y=11
+ 108x+45y=81
———————-
138x=92
x=92/138 (reduce fraction with 46)
x=2/3

Substitute x=2/3 into equation 2
12(2/3x)+5y=9
y=1/5

Therefore, the solution to the system is C. (2/3, 1,5)
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Records show that Oliver is typically 10-30 minutes late
Ratling [72]

The percentage of the time will Oliver get a written warning when  he is more than 16 minutes late for his shift at work is 46.7%.

<h3>What is a density curve?</h3>

The density curve is a type or way of representation of numbered distribution data over a graph. Here, the outcomes are continues. The density curve can not be below the x-axis or horizontal line of the graph.

In a density curve,

  • The mean of a density curve is indicated by μ (mu).
  • The standard deviation of a density curve is indicated by Sx.

Records show that Oliver is typically 10-30 minutes late for his shift at work. The distribution for the minutes he is late forms a consistent pattern, which can be graphed as the given uniform density curve.

Oliver will get a written warning if he is more than 16 minutes late for work. The time remain after the 16 minutes is,

t=30-16

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Thus, the percentage of the time will Oliver get a written warning is,

p=(14/30)*100

p=46.7 %

Thus, the percentage of the time will Oliver get a written warning when  he is more than 16 minutes late for his shift at work is 46.7%.

Learn more about the density curve here;

brainly.com/question/25334760

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tony bought a video game on sale for $7 off the original price of $45.99. What percent was the video game marked down?
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Step-by-step explanation:

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1/4 because they sweeped up 1/2 of the city on Monday and half of 1|2 is 1/4 so the answer is 1/4 or 0.25 or 25%
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