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Eva8 [605]
4 years ago
5

A physics test is normally distributed. The class average was 79.3, and the standard deviation was 7.5. What percent of students

scored between a 68 and 86.8?
Mathematics
1 answer:
Bezzdna [24]4 years ago
5 0

Answer:97.275% or 97.5%

Step-by-step explanation:

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4 divided by 1/2 in a model
seraphim [82]

Answer:

8

Step-by-step explanation:

4 ÷ \frac{1}{2} = \frac{4}{1} · \frac{2}{1}

4 · 2 = 8

3 0
3 years ago
Which statement is logically equivalent to the following statement: “If it is raining, I will stay home from the concert”?
Gnoma [55]

Answer:

It’s If I do not stay home from the concert then it is not raining.

Step-by-step explanation:

it’s the answer that I have because in the question it’s asking what is the same but I guess opposite. Which is why I chose the first answer as my answer since if it’s not raining then they would go to the concert.

8 0
2 years ago
The angles of a pentagon are in ratio
ivanzaharov [21]

Answer:

  216°

Step-by-step explanation:

The ratio of the sum of smallest and largest to the total of all angles is ...

  (9 +15)/(9 +10 +12 +14 +15) = 24/60 = 0.4

__

The total of all angles in an n-gon is 180°(n -2), so the total of all angles in a pentagon is ...

  180°(5 -2) = 540°

Then the sum of smallest and largest angles is ...

  0.4(540°) = 216°

6 0
4 years ago
Read 2 more answers
A hot air balloon to descends 305 feet per minutes for 4 minutes and then ascends at a rate of 215 feet per minute for another 2
expeople1 [14]
305 × 4 = 1220
215 × 2 = 430
1220 - 430 = 790

The change in the altitude of the balloon is 790 feet.
5 0
4 years ago
1. Give an example of where you would use a credit card versus a debit card. List the pros and cons of each for this purchase yo
natka813 [3]
Buying a new car. you should always use a debit card but if you used a credit card than the pros would be you would not have to worry about the cost. the cons, if it is over your budget you would go into debt. if you used a debit card than you could use Ur own money which means no debt. cons. if you don't have enough money you would need a loan or a cheaper or worse car
4 0
3 years ago
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