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2 years ago

Use the following table to determine P(X>4).

Mathematics

1 answer:

STatiana [176]2 years ago

4 0

Answer:

0.11

Step-by-step explanation:

To get the probability above, we simply look for the events greater than 4, then add their probabilities

That is;

P(5) + P(6) + P(7)

So the probability in this case will be;

0.07 + 0.03 + 0.01 = 0.11

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On Sunday 440 people visited a museum that charges $9 for each child and $12.50 for each adult. If the museum earned $5,220 on t

alisha [4.7K]

Answer:

A) 360 adults

Step-by-step explanation:

c=quantity of child

a=quantity of adult

9c+12.5a=5220

a+c=440 then c=440-a

substitute for c

9(440-a)+12.5a=5220

3960-9a+12.5a=5220

reduce

3.5a=1260

a=360

3 0

3 years ago

The angle of elevation to a nearby tree from a point on the ground is measured to be 61 ∘ ∘ . How tall is the tree if the point

marishachu [46]

Answer:

106.44 ft

Step-by-step explanation:

tan = opp/adj

tan61 = opp/59

59*tan61 = opp

opp = 106.438817561014012

Rounded

106.44 ft

5 0

3 years ago

What is the income distribution of super shoppers? A supermarket super shopper is defined as a shopper for whom at least 70% of

patriot [66]

Answer:

Yes, the probability distribution is valid.

Step-by-step explanation:

Given :

Income range ___ midpoint(x) ___ %

5 - 15 __________ 10 _____20%

15 - 25 _________ 20 _____13%

25- 35 _________ 30 _____ 21%

35 - 45 _________40 _____ 17%

45 - 55_________ 40 ____ 20%

55 or more _______ 50 _____9%

Yes, we do have a valid probability distributuon ; as the summation of the percentage values is equal to 100%

4 0

2 years ago

There are 3 consecutive integers that add up to 9 which integers are they?

matrenka [14]

Answer:

The integers are 2,3,4

Step-by-step explanation:

Let one integer be = $x$

Since, the integers are consecutive, so they will increase by one.

So, 2nd integer will be = $x+1$

3rd integer will be = $x+1+1=x+2$

It is given that the 3 integers add up to 9.

So, we have the sum equation as:

$x+x+1+x+2=9$

Solving for $x$

Combining like terms.

$3x+3=9$

Subtracting both sides by 3.

$3x+3-3=9-3$

$3x=6$

Dividing both sides by 3.

$\frac{3x}{3}=\frac{6}{3}$

$x=2$

∴ 1st integer = $2$

2nd integer = $2+1 = 3$

3rd integer = $2+2 = 4$

7 0

2 years ago

Perform the indicated operation 11/b-7 - 2b-3/b-7 = ___

statuscvo [17]

Answer:

-2(b^2 + 7b - 4)/b

Step-by-step explanation:

You need to simplify the expression

8 0

2 years ago