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Phantasy [73]
2 years ago
14

A pen is dropped on a hardwood floor and a 1 is recorded if the pen crosses a line and a 0 if it does not. Estimate the probabil

ity that the pen crosses a line in a single drop. 1 1 1 0 1 0 0 1 0 0 1 1 1
A. 3/13

B. 5/13

C. 5/8

D. 8/13
Mathematics
1 answer:
Georgia [21]2 years ago
6 0

Answer:

D. 8/13

Step-by-step explanation:

Of the 13 drops, the pen crossed a line 8 times (there are 8 1's).  So the probability is 8/13.

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50 POINTS
egoroff_w [7]

Answer:

D

Step-by-step explanation:

Factor x^2+2x-8

(x-2)(x+4) = 0

Solve for x

x = 2

x = -4

6 0
3 years ago
Read 2 more answers
Area and percent . ​
siniylev [52]

Answer:

a. 61.92 in²

b. 21.396 ≈ 21.4%

c. $4.71

Step-by-step explanation:

a. Amount of waste = area of rectangular piece of stock - area of two identical circles cut out

Area of rectangular piece of stock = 24 in × 12 in = 288 in²

Area of the two circles = 2(πr²)

Use 3.14 as π

radius = ½*12 = 6

Area of two circles = 2(3.14*6²) = 226.08 in²

Amount of waste = 288 - 226.08 = 61.92 in²

b. % of the original stock wasted = amount of waste ÷ original stock × 100

= 61.92/288 × 100 = 6,162/288 = 21.396 ≈ 21.4%

c. 288 in² of the piece of stock costs $12.00,

Each cut-out circle of 113.04 in² (226.08/2) will cost = (12*113.04)/288

= 1,356.48/288 = $4.71.

3 0
3 years ago
2. Ne jayden spent $2.50 to wash his car. If two quarters operate the car wash
Black_prince [1.1K]
I think it is 5 minutes
3 0
2 years ago
Read 2 more answers
There are 8 sophomores on the academic team. At the last competition, they each took the math test. Their scores were 82%, 92%,
Sav [38]

Answer:

79%

Step-by-step explanation:

To find the median, you need to arrange the numbers in ascending order. Than pick the middle number. If there are two middle numbers then you add them together and then divide by 2.

3 0
3 years ago
be rectangular prism and rectangular pyramid have the same volume. determine the value of x, the height of the pyramid.
Marina CMI [18]
ANSWER

x= 9 \: in

EXPLANATION

The volume of a rectangular prism is given by the formula,

V = l \times b \times h
We substitute the dimensions to obtain,

V = 6 \times 3 \times 12 \: {in}^{3}

The volume of the rectangular pyramid is,

V = \frac{1}{3} \times 6 \times 12 \times x \: {in}^{3}

Equating the two volumes gives,

\frac{1}{3} \times 6 \times 12 \times x = 6 \times 3 \times 12

We divide through by 6×12 to get,

\frac{x}{3}=3

We solve for x to obtain,

x = 3 \times 3

x = 9 \: in
7 0
2 years ago
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