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Olin [163]
3 years ago
13

The probability that a student guesses the correct answer to a four-choice multiple choice question is

Mathematics
2 answers:
garik1379 [7]3 years ago
5 0

Answer:

the answer is 17

Step-by-step explanation:

Hope this helps!

Lilit [14]3 years ago
3 0

Since we already know that there is a 25% chance to guess the correct answer to a multiple choice question, all we have to do is multiply .25 and 68 to get the expected amount of answers a student can possibly guess. We multiply .25 since it is the decimal form of 25% and 68 is our total questions.

.25 x 68 = 17

Therefore, a student can expect to guess 17 answers correct on a test with 68 multiple choice questions.

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Find the area of the triangle with a = 3 feet, b = 4 feet, and c = 6 feet. Round to the nearest tenth.
vova2212 [387]

Answer:

12 feet squared.

Step-by-step explanation:

The formula is (A*B)/2. (Remember, multiply first, then divide.)

3 0
3 years ago
Factor completely. a2 + 28 a + 27
solong [7]
I'm guessing you mean a^2? if so then,
a^2+28a+27=
(a+1)(a+27)
6 0
3 years ago
In the image below, 10 is the long leg of the 30-60-90 triangle.<br><br><br> True or false?
never [62]

The measure of the angle between the hypotenuse and the <em>short</em> leg is 60° and we can conclude that the side with length 10 is not the <em>long</em> leg of the 30 - 60 - 90 <em>right</em> triangle. (Right choice: False)

<h3>Is the length of a known arm in a 30 - 60 - 90 right triangle the long arm?</h3>

In accordance with geometry, the length of the <em>long</em> arm of a 30 - 60 - 90 <em>right</em> triangle is √3 / 2 times the length of the hypotenuse, the length of the <em>short</em> arm is 1 / 2 times the length of the hypotenuse and the length of the <em>long</em> arm is √3 times the length of the arm.

Thus, the measure of the angle between the hypotenuse and the <em>short</em> leg is 60° and we can conclude that the side with length 10 is not the <em>long</em> leg of the 30 - 60 - 90 <em>right</em> triangle. (Right choice: False)

To learn more on right triangles: brainly.com/question/6322314

#SPJ1

3 0
1 year ago
Someone plz help to become brainliest and get points !! :) plz answer truthfully
Irina18 [472]

Answer:

A. add the areas of both bases to the rectangular area around the cylinder.

Step-by-step explanation:

If we flatten out the cylinder we would have two circles and a rectangle. When you roll up the rectangle, it would make the body of the cylinder. Surface area by definition the total area the surface of an object occupies.

So to get it, we add up the different shapes that make up the cylinder, which is the two circles and the rolled up rectangle.

7 0
3 years ago
We can use the formula, density = mass over volume, to find the density of a substance. A square metal plate has a density of 10
mash [69]

Answer:

2.15cm^3

Step-by-step explanation:

V = Mass / Density

21.93g / 10.2g/cm^3

2.15cm^3

3 0
3 years ago
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