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ValentinkaMS [17]

3 years ago

13

A new shoe comes in two colors,black or red,and in sizes 5 to 12,including half sizes.If a pair of the shoes is chosen at random

for a store display,what is the probability it will be red and size 9 or larger?

1 answer:

Dima020 [189]3 years ago

5 0

Less then 50% thats foshow

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What is y+12 when y =29

makkiz [27]

The answer would be 41

4 0

3 years ago

There are 30 balls numbered 1-30 in a bag. One is randomly selected 12 times. What is the probability of getting a prime number

Sliva [168]

Answer: The probability of getting a prime number exactly five times = 0.1908

Step-by-step explanation:

Prime numbers from 1 to 30 are 2,3,5,7,11, 13, 17, 19, 23, 29.

The probability of getting a prime number p= $\dfrac{10}{30}=\dfrac13$

Number of trials n = 12

Binomial probability formula:

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

, where x= number of successes

n= number of trials.

x = Number of successes

p= probability of getting one success.

The probability of getting a prime number exactly five times:

$P(X=5)=\ ^{12}C_5(\frac13)^5(1-\frac13)^{7}$

$=\frac{12!}{5!7!}(\frac1{243})(\frac{128}{2187})\\\\=0.1908$

Hence, the probability of getting a prime number exactly five times = 0.1908

4 0

3 years ago

Solve the system by elimination. State whether the system has one solution, infinite solutions, or no solution.

lukranit [14]

I'm not sure I'm right, I'm not all that good at elimination but I think the answer is y = 13. So I guess the answer would be A. one solution

4 0

3 years ago

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Write the fractional equivalent (in reduced form) to each number.<br> picture below

lidiya [134]

Answer:

1. 3/10

2. 125/1000 or 1/8

3. 16/100 or 4/25

4. 1/10

5. 6/10 or 3/5

6. 2/10 or 1/5

7. 75/100 or 3/4

Step-by-step explanation:

5 0

3 years ago

PLS HELP ME WITH THIS!!<br> Also pls explain why you go the answer.

adelina 88 [10]

Answer:

C

Step-by-step explanation:

To simplify this equation,

-x+10<2

-10 from both sides

-x<-8

Take out the negative

x<8

This means x is less than 8

For ≤ and ≥ , use a closed dot to indicate the number itself is part of the solution.

For < and >, use an open circle to indicate the number itself is not part of the solution.

In this case you use a open circle and becasue x is less than 8, the arrow pointing left is correct.

6 0

3 years ago

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