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salantis [7]
2 years ago
15

A teacher gave students seven questions and wrote that she would randomly choose one of the seven questions for an exam. If harr

y prepared for only one of the questions, what is the probability that he did not study for the question that the teacher put on the exam?
Mathematics
1 answer:
VashaNatasha [74]2 years ago
6 0

Answer:

I thinks its

\frac{6}{7}

But i can be wrong

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A plate moves south at a rate of 2 cm/year. How many meters south from its original location will the plate be in 4,000 years?
Neporo4naja [7]

Answer:

I hope I can help

welcome po

3 0
2 years ago
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At the start of 2014, Mike's car is worth 12000. the car depreciates by 30 percent every year. how much is his car worth in 2017
Anarel [89]

Answer:

$4,116

Step-by-step explanation:

Worth of Mike's car at the start of 2014 = $12,000

If the car is said to depreciates every year by 30% = 30/100 = 0.3

The worth of the car at the start of 2017 is what we are to determine.

This means that the car depreciated by 30% (0.3) for 3 years since 2014 (2017 - 2014 = 3 yrs)

The worth at the start of 2017 would be calculated as follows:

12,000 × (1 - 0.3)³

= 12,000 × (0.7)³

= 12,000 × 0.343

= 4,116

Worth of the car at the start of 2017 would be $4,116

4 0
2 years ago
Ribbon is only sold by the spool. A spool contains 25 yards of ribbon. Shannon needs 58 yards of ribbon to wrap all the presents
ella [17]

Answer:

\boxed{\text{3 spools}}

Step-by-step explanation:

\text{1 spool =25 yd}\\\text{Spools needed } = \text{58 yd} \times \dfrac{\text{1 spool}}{\text{25 yd}} = \text{2.32 spools}\\\\\text{However, Shannon can't buy part of a spool. She must $\textbf{round up}$ to the next integer.}\\\text{Shannon must buy $\boxed{\textbf{3 spools}}$ of ribbon}

6 0
2 years ago
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22 customers are eating dinner at an Italian restaurant. Of the 22 customers, 18 order pizza, 10 order a salad, and 8 order pizz
Ne4ueva [31]

Answer:

Step-by-step explanation:

P(A) = 18/22

P(B) = 10/22

P(A and B) = 8/22

P(A or B) = 18/22 * 10/22 = 0.37

4 0
2 years ago
Aaron is standing at point C, watching his friends on a
igor_vitrenko [27]

Answer: 194

Step-by-step explanation:

Did the assignment

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2 years ago
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