Turn 18/5 into a decimal
2 answers:
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Answer:
23.72% probability that 3 of them have hardcover texts.
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
The order in which the students are chosen is not important. So we use the combinations formula to solve this question.
Combinations formula:
is the number of different combinations of x objects from a set of n elements, given by the following formula.
If you randomly choose 15 students in this class, find the probability that 3 of them have hardcover texts.
Desired outcomes:
3 with hardcover texts, from a set of 25.
15-3 = 12 with paperback texts, from a set of 75. So
Total outcomes:
15 students from a set of 100. So
Probability:
23.72% probability that 3 of them have hardcover texts.
The measure of the exterior angle x is 90°.
We need to find the measure of the exterior angle x.
<h3>What is the exterior angle theorem formula? </h3>An exterior angle of a triangle is equal to the sum of its two opposite non-adjacent interior angles.
Now, x°=∠A+∠B
⇒x°=30°+60°=90°
Therefore, the measure of the exterior angle x is 90°.
To learn more about the exterior angle visit:
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