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snow_lady [41]
3 years ago
9

Suppose you are taking a multiple choice exam with 61 questions, each with 4 possible answers. If you were to guess at random fo

r each question, how many questions would you expect to get right
Mathematics
1 answer:
Brut [27]3 years ago
7 0

Answer:

15.25

Step-by-step explanation:

The probability of getting a question right is 1/4 because there are 4 possible answers, and you're just guessing randomly.

You can expect to get 1/4 of the questions right.

\frac{1}{4}\times 61 =15.25

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Jimmy earns $9.25 per hour working at a local grocery store. If Jimmy earned $74 last week, which equation would be used to dete
Alekssandra [29.7K]
9.25h=74 you multiply h by 9.25
8 0
3 years ago
What is the y-intercept of the line perpendicular to the line...
Dominik [7]

Answer:

D) 5

Step-by-step explanation:

Perpendicular lines have opposite reciprocal slopes.

The line: y=\frac{3}{4} x+3 has a slope of \frac{3}{4} as it is  in y=mx+b form, where m is the slope, and b is the y-intercept.

Since the slope is \frac{3}{4}, we see that the negative reciprocal slope is -\frac{4}{3}, as \frac{4}{3} is the reciprocal (flip the numerator and denominator).

From here, we can use point slope form: y - y1 = m(x- x1), where (y1, x1) is  the point. In this case, (3, 1) is the point.

Thus, we have: y-1 =-\frac{4}{3}(x-3) as our final equation.

Simplifying: y-1 = -\frac{4}{3}x+4

And: y=-\frac{4}{3}x+5, which gives us the y-intercept to be 5.

Let me know if this helps!

4 0
2 years ago
Please help meeeeeeeeeeeeeee
Colt1911 [192]

Answer:

4/25 or 0.16

Step-by-step explanation:

your welcomeee

8 0
2 years ago
Read 2 more answers
Summer exercises for 0.5 hour on Monday Wednesday and Friday each week. How many hours will she exercise in four weeks
Sati [7]

Answer:

She will exercise for 6 hours in four weeks.

Step-by-step explanation:

Summer exercises for 0.5 hour on Monday, 0.5 hour on Wednesday, and 0.5 hour on Friday. There are 3 days where she exercises for 0.5 hour.

3 days X 0.5h = 1.5h each week

For four weeks, multiply the hours each week by 4.

1.5h X 4 weeks = 6h

Therefore Summer will exercise for 6 hours over the course of 4 weeks.

6 0
3 years ago
Read 2 more answers
Jacob puts his 731 marbles in 37 bags if he put the same amount in each bag how many marbles were in each bag how many marbles w
frozen [14]

Answer:

their would be 19 marbles in each bag but the total left out the bag will be 28 which is explain below

731 ÷ 37= 19

19 × 37 = 703

703 - 731 = - 28

6 0
2 years ago
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