The probability that a student guesses the correct answer to a four-choice multiple-choice question is ​P(correct)=0.25. How many correct answers should a student expect to guess on a test with 72 four-choice multiple-choice​ questions?

Answers

Answer 1

Answer: 18

Step-by-step explanation:

0.25 or 1/4 can be answered correctly

there's 72 questions

0.25*72=18


Related Questions

Last question for this part pls help thank you - no bitly

Answers

C) today’s soup will taste the same

Explanation: first divide 9 by 12 to get 0.75 or 75%. Then divide 6 by 8 to get 0.75 or 75%. Because they have the same percentage, the soup will be the same
scsjdb and bobs hebdid is d item

Find the total area of the composite shape below.

A. 180.48 sq ft
B. 280.96 sq ft
C. 130.24 sq ft
D. 105.12 sq ft

Answers

Answer:

A 180.48sqft

Step-by-step explanation

Answer is A, to find the area you obviously have to multiply

!!!*BRAINLIEST*!!!

The measures of the angles of a triangle are shown in the figure below. Solve for x

Answers

x is equivalent to 6

what is the volume of this prism
56.3 cubic units
31.5 cubic units
63.0 cubic units
11.75 cubic units

Answers

Answer:

56.3 cubic units

In the course of a short race, a car does 50,000 J of work in 7 s. What is the power of the car during the race? (round to the nearest whole number)

Answers

Answer:

Work done is the product of distance and force, it is measured in joules.

Power is the rate of work done given by dividing the work done by time

Power (watts)= workdone (J)/ time (s)

                     = 50,000J/7 sec

                     = 7142.857 watts

Therefore, the power of the car during the race was 7142.857 watts

Step-by-step explanation:

The goalie on the Iceblades hockey team saves (blocks) 73% of the opponent's shots. With 10 minutes to go, the Iceblades are ahead by one goal, and they will win if the other team does not score.
The other team takes 5 shots in the final 10 minutes. The Iceblades do not score any more goals.
The table shows pairs of random digits. The pairs in each group simulate the 5 shots taken by the opponent.
Answer the questions to estimate the probability that the Iceblades will win the game.


1. The paired digits 00 to 99 represent 100 shots.
Let 00 to 72 = a shot that is saved. Which digits represent a goal scored? Explain.


2. Each group represents the 5 shots taken by the other team. To win the game, the Iceblades cannot let the other team score any goals.
For a group to be a success, how many of the 5 shots does the goalie need to save?


3. Group 1 is a success. Explain why.


4. In this simulation, which groups are successes? How many successes are there in the 10 groups?


5. Estimate the probability the Iceblades will win the game. Give your answer as a percent.

Answers

1. The paired digits 00 to 99 represent 100 shots.

blocked

Let 00 to 72 = a shot that is saved. Which digits represent a goal scored? Explain.

Write your answer in the space below.

The answer is 73 to 99

2. Each group represents the 5 shots taken by the other team. To win the game, the Ice blades cannot let the other team score any goals.

For a group to be a success, how many of the 5 shots does the goalie need to save?

Write your answer in the space below.

The answer to the question Is all 5.

3. Group 1 is a success. Explain why.

Write your answer in the space below.

Group 1 is a success because none of the numbers 73 and 99 show up.

4. In this simulation, which groups are successes? How many successes are there in the 10 groups?

Write your answer in the space below.

1,3,10

There are 3.

5. Estimate the probability the Ice blades will win the game. Give your answer as a percent.

Write your answer in the space below.

3/10=30%

ok yeah I can find what the name is but how in the heck do I find the value of x?!!! directions in photo no links or your getting reported!!!!!

Answers

This is an isosceles triangle, as indicated by the two lines on two sides (they are equal). One angle is 45 degrees, as indicated. We know that the angles of the two equal sides are equal as well. Knowing that all triangles sum up to 180 degrees, we can subtract 45 from 180 and divide by two to get each equal angle.

Here it is:

180-45=135

135 divided by 2 is 67.5.

This means that the value of x is 67.5 degrees.

To check, we can add all of the sums and it should be 180 degrees.

45+67.5+67.5=180

∴ x= 67.5 degrees

Take what a triangle equal up to them subtract 45

4=32b
solve for b WILL GIVE BRAINLIEST

Answers

Answer:

1/8

Step-by-step explanation:

[tex]32b \div 32 = 4 \div 32 \\ [/tex]

An equilateral triangle has sides of length 10 cm.
**DIAGRAM IN PICTURE**

a. Calculate the perpendicular height, h, of the triangle.

b. Calculate the area of the triangle.

Give your answers correct to one decimal place. 10 cm 10 cm 10 cm

Answers

Answer:

a. 8.7cm

b. 43.5cm squared

Step-by-step explanation:

a. draw the triangle with a side length of 10cm, and measure the height which is 8.7cm.

b. formula to find the area  of a triangle: (base into height) divided by 2 ((b x h) / 2)

the base is 10

the height is 8.7

(10 x 8.7)/2 = 87/2 = 43.5 cm squared

A is 8.7cm
B is 43.5 cm

Jeff bought a bottle of water for $2. He also bought some hot dogs for $3 each. Jeff did not spend more than $14 on the hot dogs and the bottle of water. Witch inequality can be used to find h, the number of hot dogs that jeff could have bought. (If you answer I'll give you a brainilst;))

F. 3h-2<≤4
G. 3h+2≤14
H. 3H-2≥14
J. 3h+2≥14

Answers

Answer:

3H - 2 ≤ 14 I believe.

If i'm wrong forgive me

Answer:

G: 3h+2[tex]\leq \\[/tex]14

Step-by-step explanation:

He could've spent 14 dollars, or less, so the sign is the less than, equal to sign. The 3h represents the cost of hot dogs times the number of hot dogs. The represents the cost of the water bottle. It is addition because he purchased both the water bottle and hot dogs.

Solve the system of equations by substitution.

-8x+2y=4
y=4x+2

Answers

Answer:

the answer by substitution would be y = 4x+2

Correct answer: Infinite solution because 2 = 2.

Set the first equation equal to y.

-8x + 2y = 4

+8x          +8x

___________

2y = 8x + 4

__   ___  __

2      2     2

y = 4x + 2

At this step, you can choose any equation to substitute into the other equation. However, I'm going to substitute the new first equation with the second equation where y is. Solve for x.

y = 4x + 2

4x + 2 = 4x + 2

-4x        -4x

____________

2 = 2

So, at this point, we know the system of equation does not have one solution. Thus, when the same number equals the same number, it is an infinite solution.

We can prove this by an online graphing tool. Insert the two equations onto the online graphing tool. If the lines appear to be on the same line, they have infinite solutions. Hope this helps :) Let me know if you have any questions related to this problem!

Find the surface area of the prism. 7yd 7yd 7yd.

Answers

Answer:

294 yd ^2

Step-by-step explanation:

it should be correct!

It’s 294yd 2 step equations

Help plz .......................

Answers

Step-by-step explanation:

hope this helps ..........

Answer:

Look at the image.

Step-by-step explanation:

0.25(4x - 24) + x = 14

x - 6 + x = 14

2x - 6 = 14

2x - 6 + 6 = 14 + 6

2x = 20

2x ÷ 2 = 20 ÷ 2

x = 10

Sara purchased a porcelain sculpture that is in the shape of a square pyramid. The slant height is 6.1 inches and the base 6.4 inches. Find the surface area. Round to the nearest tenth.
I need help asap

Answers

Answer:

119.04

Step-by-step explanation:

Which expression is equivalent to the expression: -3(4x-2)-2x
A.) -8x
B.) -16x
C.) -14x - 2
D.) -14x + 6

Answers

Answer:

The answer is D.

Step-by-step explanation:

-3(4x) = -12x, -3(-2) = -6, and then we have -2x. -12x - 6 - 2x simplified is

-14x - 6.

help fake answers will be reported

Answers

Answer:

i think it is 1/32

Step-by-step explanation:

Please answer correct with an explanation thanks!

Answers

Answer:

17/50

Step-by-step explanation:

P(red or purple) = number of red or purple / total

There are 7 red rings and 10 purple rings

                          = (7+10) / 50

                          = 17/50

17/50
There are 7 red rings, and there are 10 purple rings, If you add all the rings together, it is out of 50, therefore it is 17/50

65% of what number is 78?

Quick

Answers

Answer:

The answer is 120.

Step-by-step explanation:

The answer to this question is 120.

True or False: The weight of an object varies with the amount of gravity that pulls on it.
I'll mark brainliest

Answers

Answer:

True

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Answer: true

Step-by-step explanation:

need help
Which is the verbal expression for k≤10?

Answers

Answer:

A number k is less than or equal to 10

Step-by-step explanation:

Answer:

The number k is less than or equal to ten

Step-by-step explanation:

no links or i'll report

Answers

Answer:

D

Step-by-step explanation:

you need to ask as many people as possible you cant just choose one grade. you need to sample multiple grades

ReWaRding brainliest
What is the absolute value of –9?


–9

–3

3

9

Answers

Answer:

9

hope this helps

have a good day :)

Step-by-step explanation:

Answer:

9

Step-by-step explanation:

Absolute value is how far a number is from 0 on the number line. Regardless of negative or positive, -9 is 9 spaces away from 0, therefore the answer is 9.

Please give me brainliest if I helped!

On cold days, Nate likes to make hot chocolate, Ile uses 6 tablespoons of cocoa and 2 tablespoons of sugar. How does the amount of coca Nate uses compare to the amount of sugar he uses?

Answers

Answer:

45

Step-by-step explanation:

There u go

I believe 45 is the answer

PLS HELP DUE SOON GIVING BRAINLIEST

Answers

102 and 102

72 and 72

142 and 142

Answer:

Answer 1                  Answer 2

102                            102 again

72                              72 again

142                            142 AGAIN

All answers together: 632

Key to a lock= 1264

Step-by-step explanation:

Sorry for the wait I just saw this question. Lol, I guess answer 1 is always equal to answer two but here is my work:

6(3)+21(4)=18+84=102

2(2(3)+7(4)=2(6+28)=12+56=102

5(6)x7(6)=30+42+72

6(5+7)=6(12)=72

14(10)+2=140+2=142

2(7(10)+1)=2(70+1)=2(71)=142

102+102+72+72+142+142=632

632 squared means 632x2 which is 1264.

Help me pleaseeeeeee

Answers

everything except the last two, I think.

I got 240 so I just need to double-check that. I also need to explain why it's 240 mins? Maybe an expression? Help

Answers

Let’s find the slope of this equation

Slope formula:

(y2-y1/x2-x1)

Plug things in

(-3000-0/20-0)

(-3000/20)

Condense the fraction

Slope = -150 or lowering 150 feet per minute.

Let’s get point slope form, add in some points.

Point slope form:

y - y1 = -150(x - x1)

Plug things in

y - (-3000) = -150(x - 20)

y + 3000 = -150x + 3000

Subtract 3009

y = -150x

Plug in -36000 for y

(-36000) = -150x

Divide by -150

x = 240

You are correct, it took 240 minutes.

A picnic basket was marked up 95% from an original cost of $9.57. Last Friday, Rosanne bought the picnic basket and paid an additional 8% in sales tax. What was her total cost?

Answers

Answer: $10.60

Step-by-step explanation:

Turn 95% into a decimal then add $9.57, then turn 8% into a decimal then add all of the numbers together.

I'm not sure if this is right, I did it on my own.

The total cost to be paid is $20.15

What is Percentage?

To determine the quantity or percentage of something in terms of 100, use the percentage formula. Per cent simply means one in a hundred. Using the percentage formula, a number between 0 and 1 can be expressed. A number that is expressed as a fraction of 100 is what it is. It is mostly used to compare and determine ratios and is represented by the symbol %.

Given:

Original cost =  $9.57

Markup= 95%

So, the new cost of the basket

=95/100 x 9.57

=0.95 x 9.57

=$9.0915

Thus, the cost of the basket is

= 9.57+9.0915

=18.66

Also, the sales tax is 8%

=8/100 x 18.66

=0.08 x 18.66

=1.4928

Therefore, the total amount to be paid is

=18.66+1.4928

=$20.15

Learn more about Percentage here:

https://brainly.com/question/29306119

#SPJ1

I know this is kinda easy but I don’t know and don’t have a lot of time

Answers

D
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Stephanie took out a loan from her bank that charges 8.5% interest. If she borrowed $10,000 for 20 years, what is the total amount that she will have to pay the bank?

Answers

Answer:

10 850

Step-by-step explanation:

First, take 8.5% of 10 000, which is 850.

Then that plus what she already had to pay equals 10 850.

Answer: something like 10 850 probably

Please answer correctly both questions and no links please and thank you! :)

Answers

Answer: 2 and then 1 Step-by-step explanation:

the answer is 2 :)))))))))
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