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3 years ago

10

When Marcie stands 5 feet from a light post, her shadow is 6 feet long. Find the height of the light post if Marcie is 4 feet ta

ll.

1 answer:

kozerog [31]3 years ago

7 0

22/3 or 7.3333333333333333333333333333 or 7 1/3 feet

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In a manufacturing process that laminates several ceramic layers, 1% of the assembles are defective. Assume that the assemblies

Setler79 [48]

There are several information's already given in the question. based on those information's, the answer can be easily deduced.

a. It is already given that 1% are defective. It is required to find the number that is needed to be checked to get 5 defective products.
Then
1% of X = 5
0.01X = 5
x = 5/0.01
= 500

b. <span>σ = square root [(<span><span><span><span>n^2</span>−1)/</span>12]
= square root [(250000 - 1)/12]
= square root [249999/12]
= square root (20833.25)
= 144.34
= 144
I hope the procedure is clear enough for you to understand. I also hope that this is the answer that you were looking for and the answer has actually come to your desired help.</span></span></span>

6 0

3 years ago

A Local group claims that the police issue more than 60 speeding tickets a day in thire area. To prove their point, they randoml

MissTica

Answer:

The group's claim is not supported at 1% significance level.

Step-by-step explanation:

given that a local group claims that the police issue more than 60 speeding tickets a day in thire area

The data they collected for 2 weeks is given below:

70 48 41 68 69 55 70

57 60 83 32 60 72 58

$\bar x = 60.2\\s = 12.9\\n=14$

Std error of mean = $\frac{12.9}{\sqrt{14} } \\=3.4477$

$H_0: \bar x=60\\H_a: \bar x >60$

(Right tailed test at 1% significance level)

Mean difference = 0.10

Test statistic t with df 13 = mean difference/std error

= 0.029

p value = 0.4886

Since p >0.01, we accept null hypothesis

The group's claim is not supported at 1% significance level.

7 0

2 years ago

Daniel started a video game with 30 tokens. He earned 8 more tokens 0/10

WINSTONCH [101]

Answer:

2x(30+8-6)-20

Step-by-step explanation:

7 0

2 years ago

Could someone help please

leonid [27]

Answer: B

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

There are 26 letters in the alphabet. D is the 4th letter, so there are 26 - 4 = 22 letters after D.

$\frac{22}{26}$ ÷ $\frac{2}{2}$ = $\frac{11}{13}$

3 0

3 years ago

What is the volume of the pyramid? <br> A. 60 ft^3<br> B. 240 ft^3<br> C. 106.7 ft^3<br> D. 80 ft^3

uranmaximum [27]

Answer:

the correct answer is

D. 80 ft^3

vol. of pyramid = (l× w × h)/3

= (6×8×5)/3

= 80 ft^3

7 0

3 years ago

Read 2 more answers