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Katen [24]
3 years ago
9

HELP PLEASE:(

Mathematics
2 answers:
valentina_108 [34]3 years ago
8 0

Answer:

i need more info

Step-by-step explanation:

Pepsi [2]3 years ago
5 0
The length is 4.5ft.
Explanation...
Perimeter= ( L2 + W2 )
we know that the perimeter is 19ft and the width is 5ft.
19= L2 + 5•2
19= L2 + 10
19-10= 9 (L2)
So divide 9 by 2.
4.5
perimeter is 19, length is 4.5 and the width is five.
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Explain how to use a pattern to find 35.6 ÷10 to the second power
Ad libitum [116K]
10 to the 2nd power only means 10x10=100
35.6/100=0.256
35.6/10x10=0.256
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If you invest $823 at an interest rate of 3 percent,how much money will you have in total afer nine years?​
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Step-by-step explanation:

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Jordan starts his day by doing his exercises. Jordan jumps rope for 10 minutes and lifts weights for 30 minutes. Jordan runs 10
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Step-by-step explanation:

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Add an intersection the red light times normally distributed by the mean of three minutes and a standard deviation of .25 minute
Soloha48 [4]

95% of red lights last between 2.5 and 3.5 minutes.

<u>Step-by-step explanation:</u>

In this case,

  • The mean M is 3 and
  • The standard deviation SD is given as 0.25

Assume the bell shaped graph of normal distribution,

The center of the graph is mean which is 3 minutes.

We move one space to the right side of mean ⇒ M + SD

⇒ 3+0.25 = 3.25 minutes.

Again we move one more space to the right of mean ⇒ M + 2SD

⇒ 3 + (0.25×2) = 3.5 minutes.

Similarly,

Move one space to the left side of mean ⇒ M - SD

⇒ 3-0.25 = 2.75 minutes.

Again we move one more space to the left of mean ⇒ M - 2SD

⇒ 3 - (0.25×2) =2.5 minutes.

The questions asks to approximately what percent of red lights last between 2.5 and 3.5 minutes.

Notice 2.5 and 3.5 fall within 2 standard deviations, and that 95% of the data is within 2 standard deviations. (Refer to bell-shaped graph)

Therefore, the percent of  red lights that last between 2.5 and 3.5 minutes is 95%

8 0
3 years ago
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