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3 years ago

13

For the next school year, you must take math, English, science, and one elective. You must take all four classes in one day. How

many class schedules are possible if the math class cannot be the first class of the day?
18

4

12

24

1 answer:

ra1l [238]3 years ago

8 0

Answer:

24

Step-by-step explanation:

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here are 55 black balls and 99 red balls in an urn. If 44 balls are drawn without replacement, what is the probability that exac

ElenaW [278]

Answer:

P=0.0899.

Step-by-step explanation:

We know that are 5 black balls and 9 red balls in an urn. If 4 balls are drawn without replacement. We calculate the probability that exactly 3 black balls are drawn.

Therefore, we have 14 balls in an urn.

We calculate the number of possible combinations:

$C_4^{14}=\frac{14!}{4!(14-4)!}=1001\\$

We calculate the number of favorable combinations:

$C_3^5\cdot C^9_1=10\cdot 9=90$

Therefore, the probability is:

P=90/1001

P=0.0899.

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3 years ago

luna had $50 when she got to the carnival. after riding 12 rides, she had $26 left. what was the price of each ride.

Makovka662 [10]

Answer:

$2 per ride

Step-by-step explanation:

First determine how much she spent on rides

50 -26 = 24

She spent 24 dollars on rides

The divide by the number of rides

24/12 = 2

She spent 2 dollars per ride

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4 years ago

Read 2 more answers

Sal took four quizzes this grading period in Algebra II. He made a 56/72, 28/32, 70/90, and 42/56. Which two grades are equivale

Vanyuwa [196]

56/72 can be simplified to 14/18, then to 7/9 *dividing by 4, then by 2*

28/32 can be simplified to 7/8 *dividing by 4*

70/90 can be simplified to 7/9 *dividing by 10*

7/9 and 7/9 are equivalent, so 56/72 and 70/90 are equivalent.

4 0

4 years ago

A set S of strings of characters is defined recursively by 1. a and b belong to S. 2. If x belongs to S, so does xb. Which of th

alukav5142 [94]

Answer:

a) a

b) ab

e) bbbbb

Step-by-step explanation:

We are given the following in the question:

$a, b \in S$

$x \in S \Rightarrow xb \in S$

a) a

It is given that $a \in S$

b) ab

$\text{If }a \in S\\\Rightarrow ab \in S$

Thus, ab belongs to S.

c) aba

This does not belong to S because we cannot find x for which xb belongs to S.

d) aaab

This does not belong to S because we cannot find x for which xb belongs to S.

e) bbbbb

$\text{If }b \in S\Rightarrow bb \in S\\\text{If }bb \in S\Rightarrow bbb \in S\\\text{If }bbb \in S\Rightarrow bbbb \in S\\\text{If }bbbb \in S\Rightarrow bbbbb \in S$

Thus, bbbbb belongs to S.

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3 years ago

12 pounds of beans are distributed equally into 8 bags to give out at a food bank how many pounds of beans are in each bag

Sav [38]

Answer:

1.5 pound of beans are in each bag

Step-by-step explanation:

12/8=1.5

5 0

3 years ago

Read 2 more answers