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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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Ymorist [56]

Jupiter has greatest mass.


7 0
2 years ago
Read 2 more answers
martin will roll a number of cube 150 times.The number cube is labeled 1 to 6.How many times could Martin expect to roll a numbe
olga_2 [115]
So the probability of rolling a number greater than 2 is 4/6. So 4/6 times 150 should give you the answer 100.
7 0
2 years ago
Minato drove 390 miles. Part of the drive was along local roads, where his average speed was 20 mph, and the rest was along a hi
pashok25 [27]

Answer:

45 miles.

Step-by-step explanation:

Given that the:

Total distance covered = 390 miles

Total time = 8 hours

Let the distance covered along the local way = L

And the distance covered along the highway = H

Along with local way,

Speed = distance/ time

20 = L / T

T = L /20 .... (1)

Along the highway,

Distance covered H = 390 - L

Let the time = t

Speed = distance/time

60 = (390 - L)/t

t = ( 390 - L)/60

But total time = T + t

That is

8 = L/20 + (390 - L)/60

The LCM at right hand side will be 60

8 = ( 3L + 390 - L )/60

Cross multiply

480 = 2L + 390

Collect the like terms

2L = 480 - 390

2L = 90

L = 90/2

L = 45 miles.

Therefore, the distance Minato drive along local roads is 45 miles

4 0
2 years ago
A bag of potato chips contain 0.96 grams of sodium. If the bag is split into 8 equal servings, how many grams of sodium will eac
givi [52]

Answer:

0,12 grams

Step-by-step explanation:

0,96:8=0,12

6 0
1 year ago
Divya (height 53 cm) and Surjeet ( 58 cm ) are standing in a ground .If distance between their toes is 12 cm ,what is the distan
Morgarella [4.7K]

Answer:

The answer would be 17 cm

Step-by-step explanation:

If the distance between their feet is 12 cm, then the distance between their heads would also be 17 cm, because of their five cm height difference. [ You add that on to their normal distance]. I hope this helped! If I'm wrong, I'm sorry and please let me know... Have a great day!!

8 0
1 year ago
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