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IceJOKER [234]
3 years ago
7

If the coin is flipped 140 times, how many times would you predict the coin lands on heads

Mathematics
1 answer:
Debora [2.8K]3 years ago
3 0
The theoretical probability of a coin flip is 1/2, meaning half the time the coin will land on heads and half the time the coin will land on tails. If the coin is flipped 140 times, half of those flips should be heads. So, the prediction would be 140 * 1/2 = 70
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A construction company purchased some equipment costing $300,000. The value of the equipment depreciates
Daniel [21]

Answer:

Cost of equipment after n years = 300000 x 0.86ⁿ

Step-by-step explanation:

A construction company purchased some equipment costing $300,000.

Price of equipment = 300000 $

The value of the equipment depreciates  (decreases) at a rate of 14% per year.

Let c(n) be the cost of equipment after n years.

\texttt{Cost of equipment after 1 year =}300000-\frac{14}{100}\times 300000=0.86^1\times 300000\$\\\\\texttt{Cost of equipment after 2 years =}0.86^2\times 300000\$\\\\\texttt{Cost of equipment after 3 years =}0.86^3\times 300000\$\\\\\texttt{Cost of equipment after n years =}0.86^n\times 300000\$

Cost of equipment after n years = 300000 x 0.86ⁿ

5 0
3 years ago
the perimeter of a rectangular floor is 150 feet. find the dimensions of the floor if the length is twice the width
Vesnalui [34]

Answer:

length = 100  width = 50

Thus, the length is twice the width (50 width x 2 = 100 which is the length)

Step-by-step explanation:


6 0
3 years ago
The local pizza placed has placed a new circular sign above the restaurant. The circumference of the sign is 37.68 feet, and the
zlopas [31]

Answer:

B

Step-by-step explanation:

The circumference of a circle can be described as the linear distance round the circle

The circumference of a circle = 2πr or πD

π = 3.14

r = radius

d = diameter

the diameter is the straight line that passes through the centre of a circle and touches the two edges of the circle.

π  = circumference / 2r or circumference / D

37.68 / 12

5 0
3 years ago
you invest ​$1,000 in each of two accounts. account a earns simple interest at a rate of2.42​% over 4 years. account b earns sim
Setler79 [48]

Answer:

Account A = $ 96.80

Account B = $ 48.40

Step-by-step explanation:

Account A

Principal = $1,000

rate = 2.42% = 0.0242

time = 4 years

To find the interest we will use the formula :

I = PTR

I = 1000 x 4 x 0.0242

I = $96.80

Account B

P = 1,000

t = 24 months = 2 years

r = 2.42% = 0.0242

I = PTR

I = 1000 x 2 x 0.0242

I = $ 48. 40

difference in interest = Interest a - Interest b

difference = 96.80 - 48.40

difference = $ 48 . 40

The interest on Account A doubles the interest on Account B

6 0
3 years ago
Read 2 more answers
The sum of 6 consecutive integers is 519. What is the third number in this sequence?
egoroff_w [7]
<span>let x be the first integer, then
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x + (x+1) + (x+2) + (x+3) + (x+4) + (x+5) = 519
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6x + 15 = 519
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6x = 504
:
x = 84</span>
5 0
3 years ago
Read 2 more answers
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