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slega [8]
2 years ago
11

A bookstore classifies its books by reader group, type of book, and cost. What is the probability that a book selected at random

is a child’s book, given that it costs $15?
< $10 > $10
Child Fiction 120 255
Nonfiction 35 60
Adult Fiction 200 110
Nonfiction 75 150
A. 3151005
B. 4701005
C. 315575
D. 470575
Mathematics
1 answer:
Alina [70]2 years ago
3 0

Answer:

A) 315/1005

Explanation:

Total choices: 120 + 255 + 35 + 60 + 200 + 110 + 75 + 150 = 1005

Favorable choices: 255 + 60 = 315

probability:

favorable choices/total choices

315/1005

21/67

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a recipe for cookies calls for 10 1/6 cups of sugar. krystal has already put in 4 2/3 cups. how many more cups does she need to
DENIUS [597]

Answer:

5 1/2 cups

Step-by-step explanation:

10 1/6 = \frac{61}{6} cups

10 x 6 + 1

\frac{61}{6}

4 2/3 = \frac{14}{3} cups

4 x 3 + 2

\frac{14}{3}

Find a common denominator (6)

\frac{14}{3} = \frac{28}{6}

\frac{14}{3} · 2 = \frac{28}{6}

\frac{61}{6} - \frac{28}{6} = \frac{33}{6}

\frac{33}{6} or 5 1/2 cups

6 0
3 years ago
Three bacteria are ina dish. Each hour the number of bacteria increases by four. If at the end of the first hour there are 12 ba
Zanzabum

12+4=16 the second hour. (The first of the next three hours)

16+4=20 the third hour (the second of the next three)

20+4=24 the fourth hour( the last of the next three hours)

8 0
3 years ago
PLEASE PLEASE HELP!! ITS DUE TODAY!!
Nitella [24]

Answer:

7.5 square miles

Step-by-step explanation:

Begin by counting the number of squares that the lake completely or almost completely covers. There are six of these, as indicated by an X. Then find the squares which are about half covered by the lake. These are indicated by a Y. There are three of these. The remainder of the squares that contain some portion of the lake are less than half covered, so we will not count them.

Irregular Object

1 square = 1 sq. mile

Each X counts as one square mile, and each Y counts as 0.5 (12) of a square mile.

(6 × 1) + (3 × 0.5) = 6 + 1.5 = 7.5

The area of the lake is about 7.5 square miles.

4 0
3 years ago
Read 2 more answers
1. Walmart’s stock price started at $70. It went up by $2, then went down by $4. What is the final stock price?
Paul [167]

Answer:

68

Step-by-step explanation:

70+2-4= 68

3 0
3 years ago
If h(x)=x-9, find h(13)
Helen [10]

If you plug in h, the answer would be 13-9 which is 4.

6 0
3 years ago
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