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3 years ago

7

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aaa hi plz help me

1 answer:

Nadya [2.5K]3 years ago

5 0

Answer:

36

Step-by-step explanation:

Easy math all you have to do is look at he problem

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navik [9.2K]

Answer:

D

Step-by-step explanation:

|-6x+3|=0

-6x+3=0

-6x=-3

x=-3/-6

x=1/2

4 0

2 years ago

Can u combine 3xy with 3y

Wewaii [24]

Can the answer is 6 xy2

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3 years ago

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When full, a cinema house has n people. When 280 people have taken seat the remaining seats comes to $384 if each tickets cost $

Yuki888 [10]

I don’t understand the question, can you restate it?

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2 years ago

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3/5 of a Conductors Club went on the last camping trip.If 39 people went on the trip, how many are in the club?

Lerok [7]

The answer is 65 people in the club.

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3 years ago

A driving exam consists of 29 multiple-choice questions. Each of the 29 answers is either right or wrong. Suppose the probabili

Sholpan [36]

Answer and explanation:

Given : A driving exam consists of 29 multiple-choice questions. Each of the 29 answers is either right or wrong. Suppose the probability that a student makes fewer than 6 mistakes on the exam is 0.26 and that the probability that a student makes from 6 to 20 (inclusive) mistakes is 0.53.

Let X be the number of mistake

$P(X$

$P(6\leq X\leq 20)=0.53$

To find : The probability of each of the following outcomes.

a) A student makes more than 20 mistakes

i.e. $P(X>20)$

$P(X>20)=1-P(X\leq 20)$

$P(X>20)=1-(P(X\leq 5)+P(6\leq X\leq 20))$

$P(X>20)=1-(0.26+0.53)$

$P(X>20)=1-(0.79)$

$P(X>20)=0.21$

b. A student makes 6 or more mistakes

i.e. $P(X\geq 6)=1-P(X$

$P(X\geq 6)=1-0.26$

$P(X\geq 6)=0.74$

c. A student makes at most 20 mistakes

i.e. $P(X\leq 20)=1-P(X>20)$

Using 'a' part $P(X>20)=0.21$

$P(X\leq 20)=1-0.21$

$P(X\leq 20)=0.79$

d. Which two of these three events are complementary?

The complement of an event happening is the exact opposite: the probability of it not happening.

According to definition,

Option a and c are complementary events.

6 0

2 years ago

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