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Aliun [14]
4 years ago
5

The probability that a student guesses the correct answer to a four-choice multiple-choice question is ​P(correct)=0.25. How man

y correct answers should a student expect to guess on a test with 52 four-choice multiple-choice​ questions?
A student should expect to guess _________ correct answers.
Mathematics
1 answer:
Pie4 years ago
8 0

Answer:

13

Step-by-step explanation:

Expected answer to be correct is 52*0.25 = 13

Since we know that 52 is the number of questions, and 0.25 is the probability of getting a correct answer we multiply them together to get the chance of getting correct answers.

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Sue uses 1/5 cup of flour for 2 cups of milk to make a cake. how many cakes can she make with 15 cups of flour
Rasek [7]
She can make 75 cakes with 15 cups of flour
4 0
4 years ago
An older TV screen was 11 centimeters wide. The
Montano1993 [528]

Answer:

The new TV screen is 12.1 centimeters wide.

Step-by-step explanation:

Find 10% of 11:

0.10 x 11 = 1.1

Add 1.1 to the original size.

11 + 1.1 = 12.1

hope this helps

4 0
4 years ago
Read 2 more answers
Write the equation of a circle whose center is at (3,-2) and has a radius of 11.<br>Show your work!
Viefleur [7K]

Answer:

(x - 3)^{2} + (y + 2)^{2} = 121

Step-by-step explanation:

The equation of a circle has the following format:

(x - x_{0})^{2} + (y - y_{0})^{2} = r^{2}

In which r is the radius and the centre is the point (x_{0}, y_{0})

In this question:

Center at (3,-2), so x_{0} = 3, y_{0} = -2

Radius 11, so r = 11

Then

(x - 3)^{2} + (y - (-2))^{2} = 11^{2}

(x - 3)^{2} + (y + 2)^{2} = 121

3 0
3 years ago
If (7^0)^x = 1, what are the possible values of x? Explain your answer.
kobusy [5.1K]

Hello,

What do you think of 7^0 ?

It is 1

and what do you think of 1^x  ?

it is 1

and the solution of 1 = 1 ?

There is an infinity of solutions as 1 = 1 is always true.

thanks

6 0
3 years ago
Writebthe name of the period that has the digit 913
den301095 [7]
Nine hundred thirteen thousand
7 0
3 years ago
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