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ella [17]
3 years ago
9

On a multiple choice test with 17 questions, each question has four possible answer, one of which is correct. For students who g

uess at all answers, find the mean for the number of correct answers.
a. 12.8
b. 8.5
c. 4.3
d. 5.7
Mathematics
1 answer:
Virty [35]3 years ago
3 0

Answer:

C. 4.3

Step-by-step explanation:

Given that

n = 17

P = 1/4

Using binomial

Mean = np

Mean = 17 × (1/4)

= 17 × .25

= 4.25

Approximately = 4.3

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(50 pts) Find the odds in favor of rolling two consecutive odd numbers when a pair of dice is rolled.
Verdich [7]

Answer:

<h3>1/4</h3>

Step-by-step explanation:

Rolling two consecutive odd numbers when a pair of dice is rolled.

There are 3/6 (1, 3, 5) odd numbers on a fair dice.

3/6 = 1/2

The dice is rolled twice.

1/2 × 1/2 = 1/4

3 0
3 years ago
Read 2 more answers
You and a friend both work two different jobs. the system of linear equations represents the total earnings for x hours worked a
levacccp [35]
Me :           4 x + 8 y   =  64
My friend:  8 x + 16 y = 128
A ) 4 * 4 + 8 y = 64
     16 + 8 y = 64
     8 y = 64 - 16
     8 y = 48
     y = 48 : 8
     y = 6 ( me and my friend work 6 hours at the second job )
B )  The number of hours we each work at the first job are also the same.
5 0
3 years ago
Solve 6( x + 20) = 168
Licemer1 [7]

Answer: X=8

Step-by-step explanation:

168/6=28. x+20=28. 8+20=28.

6(8+20)=168

8 0
2 years ago
Read 2 more answers
A. Going 20 miles per hour over the speed limit will result in a fine of $ 2
Zina [86]
Assuming that the cost of the fine is proportionate per each 20mph increase, then a 40mph speeding ticket should be $4, and if they received a fine of $150 would be a crazy amount of speed, is there something you did not attach?
5 0
2 years ago
5=g/8 PLRASE HELP Me
pantera1 [17]

G= 40

5x8=40

40/8=5

All you have to do is inverse operations so instead of dividing you multiply your 5 and 8 to get 40 and then check your work.

4 0
2 years ago
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