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aalyn [17]
3 years ago
7

Please help . I’ll mark you as brainliest if correct!!!

Mathematics
1 answer:
damaskus [11]3 years ago
8 0

Answer:10 Seconds

Step-by-step explanation:

s=1600 ft

t=√(s) /4

t=√(1600)/4

t=40/4

t=10 seconds

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Find a closed form for Sn = 1 *1!+2*2!+...+n*n! for integer n>=1 Your response should have a factorial.
pantera1 [17]
Hello,

x_{1} =1*1!=1\\
 x_{2} =2*2!=4\\
 x_{3} =3*3!=18\\
 x_{4} =4*4!=96\\

 S_{1} = x_{1}=1=2!-1\\
 S_{2} = x_{1}+x_{2}=1+4=5=3!-1\\
 S_{3} = x_{1}+x_{2}+x_{3}=5+18=23=4!-1\\
 S_{4} = x_{1}+x_{2}+x_{3}+x_{4}=23+96=119=5!-1\\

 \boxed{S_{n} = (n+1)!-1}\\



6 0
4 years ago
A spinner with 6 equally sized slices is shown below. (2 slices are yellow, 1 is blue, and 3 are red.) The dial is spun and stop
Lady bird [3.3K]

Answer:

1/3

Step-by-step explanation:

We have 6 slices

2 are yellow

P ( yellow) = number of yellow / total

                 = 2/6

                  = 1/3

8 0
3 years ago
Read 2 more answers
A store adverstises buy one item at full price and take 1/2 off the cost of a second item. Steve buys one item with a price tag
Nitella [24]

Answer:

(D) 20%

Step-by-step explanation:

The original price of the two items = $60 + $40 = $100

The discounted price of the two items = $60 + ($40 x 0.5) = $60 + $20 = $80

To find the percent discount he received off his total purchase, we need to divide the difference between the original price and the discounted price by the original price.

$100 - $80 = $20

$20 ÷ $100 = 0.2

0.2 = 20%

~Hope this Helps!~

7 0
4 years ago
You play a video game for 15 minutes. You lose 75 points. What integer represents the mean chanse
Stells [14]

Answer:

5

Step-by-step explanation:15×5

8 0
3 years ago
Find the Area of the Garden (Must show work!!!)
sesenic [268]

Answer:

  • 162 ft²

Step-by-step explanation:

<u>The missing side of the garden is the hypotenuse of a triangle with legs:</u>

  • (80 - 70) = 10 ft and (40 - 15) = 25 ft

<u>The length of the side is:</u>

  • \sqrt{10^2+ 25^2} = \sqrt{725} ≈ 27 ft

<u>The area of the garden is:</u>

  • A = 27*6 = 162 ft²
7 0
3 years ago
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