Question 6 (1 point)

Mathematics

1 answer:

iris [78.8K]3 years ago

8 0

Answer:

-9√11

Step-by-step explanation:

Simplify 5√11-12√11-2√11

Applying,

The law of surd,

Step 1: factor out the common surd or irrational number i.e √11

√11(5-12-2)

√11(-9)

Step 2: Multiplying the whole number and the surd

-9√11

Therefore,

5√11-12√11-2√11 = -9√11

Hence the right option from the list of option is

c -9√11

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The proportion of students who own a cell phone on college campuses across the country has increased tremendously over the past

pickupchik [31]

Answer:

Binomial, with $p = 0.9, n = 15$

Step-by-step explanation:

For each student, there are only two possible outcomes, either they own a cellphone, or they do not. The probability of a student in the sample owning a cellphone is independent of whether other students own a cellphone or not. This means that we use the binomial probability distribution to solve this question.

Binomial probability distribution:

Probability of exactly x sucesses on n repeated trials, with p probability.

90% of students now own a cell phone.

This means that $p = 0.9$