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3 years ago

What is 13\15-1\5 and what is the simplified answer

1 answer:

4 0

13/15 - 1/5 
common denominator is 15 
Multiply numerator and denominator of 1/5 by 3 = 3/15 
13/15 - 3/15 = 10/15 = 2/3

2/3 is your answer.

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BlackZzzverrR [31]

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3 years ago

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Annie needs $30 to buy a coat. She has saved $12 and plans to work as a babysitter to earn $6 per hour. Which inequality shows t

algol [13]

Annie's total earnings from her initial savings, $12, and from babysitting should be equal or more than 30. Annie's total earnings from babysitting may be expressed as $6n. The inequality should be,

12 + 6n ≥ 30

Solving for x,
6n ≥ 30 - 12

6n ≥ 18 ; n ≥ 3

Thus, the answer is the second among the choices.

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3 years ago

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POSSIBLE POINTS: 5.26

azamat

Answer:

<h3>The volume is 144.</h3>

Step-by-step explanation:

Volume of a rectangular solid = l × w × h

where

l is the length

w is the width

h is the height

From the question

l = 12 feet

w = 3 feet

h = 4 feet

Volume = 12 × 3 × 4

= 144 feet

Hope this helps you.

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3 years ago

Five binders and three folders cost $23. Five binders and one folder cost $20. How much does one binder cost?

riadik2000 [5.3K]

Answer: $3.7

Step-by-step explanation:

23-20=3

3/2=1.5

20-1.5=18.5

18.5/5=3.7

5 0

3 years ago

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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

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3 years ago