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3 years ago

11

Mrs. Daly's reading classes were surveyed about their reading preferences. The data is summarized in the table below.

2 answers:

geniusboy [140]3 years ago

8 0

Count the total number of students who prefer fiction novels: In 9th grade there are 35, in 10th grade there are 52, so there are 87 students who prefer fictions. The proportion of 10th grade students out of these 87 students is 52/87=0.60 approximately.

Komok [63]3 years ago

4 0

Answer: The answer on algebra nation is 0.60

Step-by-step explanation:

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What is the original price if the discount is 36% and the sale price is $32

Andrei [34K]

The answer is $50
Assume the original cost price to be $x

Therefore ,
X - 36X/100 = $32
-> 100x - 36x = 32 x 100
-> 64x = 3200
-> x = 3200/64
-> x = 50

7 0

3 years ago

Read 2 more answers

A boat captain can see a lighthouse on the shore which is 103ft in front of him. If the lighthouse is 22ft tall, at what angle o

elena-14-01-66 [18.8K]

Answer:

21°

Step-by-step explanation:

A boat captain, lighthouse and its base form a right triangle.

<u>We need to find the angle opposite to 22 ft side:</u>

tan x = 22/103
x = arctan (22/103)
x = 21°

<em>Note, option D should read 21° not 11°</em>

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2 years ago

How can I work this problem in adding integers with counters 5 + (-7)

Monica [59]

$\huge\mathsf\green{Answer}$

$5 + ( - 7) \\ 5 - 7 = - 2$

<h3>hope it would be helpful </h3>

4 0

3 years ago

A 4-cup carton of frozen yogurt costs $3.64. What is the price per pint?

Musya8 [376]

Answer:

$0.91.

91 cents.

Step-by-step explanation:

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7 0

3 years ago

The probability of being a universal donor is 6% (O-negative-blood type). Suppose that 6 people come to a blood drive.' a) What

Tcecarenko [31]

Answer:

$Mean = 0.36$

$SD = 0.5817$

$P(x=3) = 0.003588$

Step-by-step explanation:

Given

Let

A = Event of being a universal donor.

So:

$P(A) = 0.06$

$n = 6$

Solving (a): Mean and Standard deviation.

The mean is:

$Mean = np$

$Mean = 6 * 0.06$

$Mean = 0.36$

The standard deviation is:

$SD = \sqrt{np(1-p)}$

$SD = \sqrt{6*0.06*(1-0.06)}$

$SD = \sqrt{0.3384}$

$SD = 0.5817$

Solving (b): P(x = 3)

The event is a binomial event an dthe probability is calculated as:

$P(x) = ^nC_x * p^x * (1-p)^{n-x}$

So, we have:

$P(x=3) = ^6C_3 * 0.06^3 * (1-0.06)^{6-3}$

$P(x=3) = ^6C_3 * 0.06^3 * (1-0.06)^3$

$P(x=3) = 20 * 0.06^3 * (1-0.06)^3$

$P(x=3) = 0.003588$

7 0

3 years ago