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Dmitriy789 [7]
3 years ago
15

John runs a computer software store. Yesterday he counted 127 people who walked by his store, 58 of whom came into the store. Of

the 58, only 25 bought something in the store. Estimate the probability that a person who walks by the store will enter the store (put your answer as a fraction).
Mathematics
1 answer:
Delicious77 [7]3 years ago
3 0
The answer is 3/4. All you need to do is make proportion and simplify! Hope it helps! 
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How many different arrangements can be made with the letters from the word space
alekssr [168]
120 different arrangements
4 0
3 years ago
Read 2 more answers
Expand (3X-4)2 and write in standard form
riadik2000 [5.3K]
If you mean (3x-4)^2, the answer will be 9x^2 - 24x + 16.
8 0
4 years ago
Bobby decides to sell lemonade on a hot summer day. If Bobby sells 20 glasses of lemonade for $0.20 per cup, and his average tot
borishaifa [10]

Answer:

Bobby's economic profits for the day is $0.60.

Step-by-step explanation:

Bobby sells 20 glasses of lemonade for $0.20 per cup.

Amount earned = 20\times0.20=4 dollars

The average total cost is $0.17.

So, difference in selling amount and average = 0.20-0.17=0.03 dollars

Therefore, Bobby's economic profits for the day is = 20\times0.03=0.60 dollars

Hence, the answer is $0.60.

5 0
4 years ago
You are building a dining room table for family dinners. The table has a length of 3x + 1 feet and a width of 3x - 1 feet. If th
igor_vitrenko [27]

Answer:

Length 7 feet and Width 5 feet

Step-by-step explanation:

we know that

The area of the rectangle ( a dining room table) is equal to

A=LW

where

L=(3x+1)\ ft

W=(3x-1)\ ft

A=35\ ft^2

substitute

35=(3x+1)(3x-1)

Apply difference of squares right side

35=9x^2-1

9x^2=36\\x^2=4\\x=\pm2

Remember that the length cannot be a negative number

so

x=2

<em>Find the length</em>

L=(3(2)+1)=7\ ft

<em>Find the width </em>

W=(3(2)-1)=5\ ft

7 0
3 years ago
Use completing the square to solve this quadratic equation.
borishaifa [10]

Step-by-step explanation:

x² + 6x + 9 = 2

(x + 3)² = 2

x + 3 = ±sqrt(2)

x = -3 ± sqrt(2)

so, B and D are correct.

control :

(-3 + sqrt(2))² + 6(-3 + sqrt(2)) + 9 = 2

9 + 2 - 6sqrt(2) - 18 + 6sqrt(2) + 9 = 2

2 = 2

correct

(-3 - sqrt(2))² + 6(-3 - sqrt(2)) + 9 = 2

9 + 2 + 6sqrt(2) - 18 - 6sqrt(2) + 9 = 2

2 = 2

correct

(3 + sqrt(2))² + 6(3 + sqrt(2)) + 9 = 2

9 + 2 + 6sqrt(2) + 18 + 6sqrt(2) + 9 = 2

38 + 12sqrt(2) = 2

wrong.

(3 - sqrt(2))² + 6(3 - sqrt(2)) + 9 = 2

9 + 2 - 6sqrt(2) + 18 - 6sqrt(2) + 9 = 2

38 - 12sqrt(2) = 2

wrong.

7 0
3 years ago
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