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dedylja [7]
3 years ago
7

Which pair of expressions is not equivalent? A 3(2a + 5) and 6a + 15 B. 4x – 7 + 5x + 5 and 9x + 12 0. C. 80 - 6) and 8j – 48 D.

9b + 4 + 3b - 9 and 12b - 5​
Mathematics
1 answer:
Sergio039 [100]3 years ago
5 0

Answer:

The correct answer is B.) (4x - 7 + 5x + 5) and (9x + 12).

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Identify the class midpoints for the given frequency distribution.
german

Answer:

s

Step-by-step explanation:

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1/3 + 5/6 + 5/12 What is the answer
SOVA2 [1]
1/3 + 5/6 + 5/12

1.583333333333333
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Maggie is making a necklace using a 13-inch string and identical beads.
matrenka [14]

Answer:

52

Step-by-step explanation:

First find out how many beads cover 1 inch of the string which is 4 beads then multiply that number, 4, by the length of the string, 13. You should get 52.

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2 years ago
Given (64y^2)+(4x^2)+128y+16x+64=0, transform the equation into the appropriate form
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Answer:

(8y+8)²+(4x²+16)=0

Step-by-step explanation:

Given:

(64y²)+(4x²)+128y+16x+64=0

Find:

Equation into the appropriate form

Computation:

(64y²)+(4x²)+128y+16x+64=0

(8y)²+(2x)²+128y+16x+64=0

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(8y+8)²+(4x²+16)=0

6 0
3 years ago
In 2012, Red Rose tea randomly began placing 1 of 12 English porcelain miniature figurines in a l00-bag box of the tea, selectin
Mandarinka [93]

Answer:

n = 144 bags

Step-by-step explanation:

Given:-

- English porcelain miniature figurines in total = 12

- 1 figurine is to be placed in a 100-bag box

Find:-

On the average, how many boxes of tea must be pur-chased by a customer to obtain a complete collection consisting of the 12 nautical figurines?

Solution:-

- We will denote a random variable (X) as the number of figurines in (n) number of bags purchased.

- The probability (p) of finding a figurine in a single bag is ( success ):

                                 p = 1 / 12

- The random variable (X) can follow a binomial distribution with parameters n = number of bags purchased, and p = probability of selecting a bag with a figurine.

                                X ~ B ( n , 1/12 )

- The average number of bag "n" that need to be purchased to find all 12 figurines available:

                               E ( X ) = 12

                               n*p = 12

                               n = 12 / p

                               n = 12 / ( 1 / 12) = 12^2

                               n = 144 bags

- A total of average n = 144 bags need to be purchased to find all the 12 figurines.

6 0
3 years ago
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