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padilas [110]
3 years ago
7

Jack will attend a 2 year university and study to become a Radiology Tech The total

Mathematics
1 answer:
Lady bird [3.3K]3 years ago
5 0

Answer:8,650 is the amount he still owes

Step-by-step explanation: well first were going to do 1,000x3=3,000 now were going to do 3,250x3=9,750 now we add 9,750+3,000+4,000=16,750

so now we do the total 25,400-16,750=8,650

this was a lot of work for 5 points :( but i helped you bc im nice :)

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2. A statistics student plans to use a TI-84 Plus calculator on her final exam. From past experience, she estimates that there i
Anarel [89]

Answer:

  1. P(≥1 working) = 0.9936
  2. She raises her odds of completing the exam without failure by a factor of 13.5, from 11.5 : 1 to 155.25 : 1.

Step-by-step explanation:

1. Assuming the failure is in the calculator, not the operator, and the failures are independent, the probability of finishing with at least one working calculator is the complement of the probability that both will fail. That is ...

... P(≥1 working) = 1 - P(both fail) = 1 - P(fail)² = 1 - (1 - 0.92)² = 0.9936

2. The odds in favor of finishing an exam starting with only one calculator are 0.92 : 0.08 = 11.5 : 1.

If two calculators are brought to the exam, the odds in favor of at least one working calculator are 0.9936 : 0.0064 = 155.25 : 1.

This odds ratio is 155.25/11.5 = 13.5 times as good as the odds with only one calculator.

_____

My assessment is that there is significant gain from bringing a backup. (Personally, I might investigate why the probability of failure is so high. I have not had such bad luck with calculators, which makes me wonder if operator error is involved.)

7 0
3 years ago
Wages. JoAnn works in the publicity office at the state university. She is paid $10 an hour for the first 35 hours she works eac
rosijanka [135]

Since Joann receives $10 per hour for the first 35 hours, so she receives $350 (35 times $10) before she starts receiving extra hours.

Since she received $515, we know that she worked extra hours.

Let's use the variable x to represent the number of extra hours worked.

So we can write the following equation for the total payment received:

\begin{gathered} 10\cdot35+15\cdot x=515 \\ 350+15x=515 \\ 15x=515-350 \\ 15x=165 \\ x=11 \end{gathered}

She worked 11 extra hours. Adding this to the 35 regular hours, so she worked for 46 hours.

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1 year ago
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A candy shop buys rootbeer candies for $3.15 per pound and watermelon candies for $3.75 per pound. They sell their rootbeer cand
Lorico [155]
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2 years ago
Jonathan purchases 15 pounds of bananas for $.49 a pound. How much did Jonathan pay
ExtremeBDS [4]

Answer:

$7.35

Step-by-step explanation:

To find the answer to this question, you would need to multiply 15 times .49 which would equal 7.35

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