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Andru [333]
3 years ago
11

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). I suck at probability
Mathematics
2 answers:
alisha [4.7K]3 years ago
8 0
I was pretty bad at probability myself. So its ok! My estimate of the probability is 3/4. I simplified so that's what I got. Hope it helps!
Alona [7]3 years ago
5 0
The estimate/fraction is 3/4
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Damm [24]

Answer: C. 29.18 in.^3

Step-by-step explanation:

First you have to find the radius from the circumference. The formula for that is: r=C/2π

After you find the radius you can now find the volume using this formula: V = 4/3 π (C/2π)^3.

6 0
4 years ago
3(2x+x)/6 > 1/3x+2 solve for x
tangare [24]

1)Find all the like terms=3x3x/6>1/3x+2

2)Multiply both sides by six=9x>2x+12

3)Move the variables to the left side and change the sign=9x-2x>12

4)Find the like terms=7x>12

5)Divide by sides by seven=x>12/7

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I hope this helps! :)

4 0
3 years ago
Find a third-degree polynomial equation with rational coefficients that has roots -4 and 6 + i.
dolphi86 [110]

Answer:

x³ - 8x² - 11x + 148

Step-by-step explanation:

Given that x = 6 + i is a root then x = 6 - i is also a root

Complex roots occur as conjugate pairs.

The factors are therefore (x - (6 + i)) and(x - (6 - i))

Given x = - 4 is a root then (x + 4) is a factor

The polynomial is the product of the factors, that is

p(x) = (x + 4)(x - (6 + i))(x - (6 - i))

      = (x + 4)(x - 6 - i)(x - 6 + i)

      = (x + 4)((x - 6)² - i²)

      = (x + 4)(x² - 12x + 36 + 1)

      = (x + 4)(x² - 12x + 37) ← distribute

      = x³ + 4x² - 12x² - 48x + 37x + 148

      = x³ - 8x² - 11x + 148

 

3 0
3 years ago
The diameter of a flour tortilla is 12 inches. What is the area to the nearest hundredth?
docker41 [41]

Answer:

18.85

Step-by-step explanation:

The area of a circle is A= pi × r² (r being the radius)

The radius is half the diamter so the radius would be 6

Plug 6 into the equation for the radius

A = pi × 6²

A = pi ×36

A= 18.85

8 0
3 years ago
Which of the following rational functions is graphed below?
Viefleur [7K]
A I think is the answer
7 0
3 years ago
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