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mr Goodwill [35]
3 years ago
6

Which expression represents the following calculation?

Mathematics
2 answers:
RideAnS [48]3 years ago
4 0

Answer:

Step-by-step explanation:

The answer is C.

Because it says The difference which means subtraction.

____ [38]3 years ago
3 0

Answer:

(381-22)*16

Step-by-step explanation:

(381-22)*16

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Points A, B, and C are collinear. Point B is between A and C, AC=15a-5 , AB=10a+6, and BC=3a+11. Find AB
sdas [7]

Answer:

I bet you're smarter than me so you can figure it out

Step-by-step explanation:

good thing you aint like me

7 0
3 years ago
A random sample of 64 observations produced a mean value of 84 and standard deviation of 5.5. The 90% confidence interval for th
ASHA 777 [7]

Answer:  The 90% confidence interval for the population mean μ is between 82.85 and 85.15,

Step-by-step explanation:

When population standard deviation is not given ,The confidence interval population proportion is given by (\mu ):-

\overline{x}\pm t^*\dfrac{s}{\sqrt{n}}

, where n= Sample size.

s= Sample standard deviation

\overline{x} = sample mean

t* = Critical t-value (Two-tailed)

As per given , we have

\overline{x}=84

n= 64

Degree of freedom : df = n-1=63  

s= 5.5

Significance level : \alpha=1-0.90=0.1

Two-tailed T-value for df = 63 and  \alpha=1-0.90=0.1 would be

t_{\alpha/2,df}=t_{0.05,63}=1.669  (By t-distribution table)

i.e. t*= 1.669

The 90% confidence interval for the population mean μ would be

84\pm (1.669)\dfrac{5.5}{\sqrt{64}}

=84\pm (1.669)\dfrac{5.5}{8}

\approx84\pm 1.15

=(84-1.15,\ 84+1.15)=(82.85,\ 85.15)

∴ The 90% confidence interval for the population mean μ is between 82.85 and 85.15,

6 0
3 years ago
Which of these values represents the longest period of time?
laiz [17]
The answer is D. 6 days 

A. 60 hours is 3600 minutes
B. 60,000 milliseconds is   0.016 minutes
C. 6,000 minutes
D.  6 days is 8640 minutes
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3 years ago
Put the following decimals in order, starting with the smallest at the top.
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Answer:

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3 years ago
An architect created the blueprints for the Chin's house. The scale factor is 1 inch: 40 inches. The length and width of the liv
Gnoma [55]

Step 1: Find the area of the living room on the blueprint with the formula Area = length x height

A = 4 x 8

A = 32

Step 2: We now know that the area of the living room on the blueprint is 32 inches, but we have to convert it into the actual answer. To do this multiply 32 by 40 (you have to do this because 1 inch is 40 inch in reality meaning that each inch in  the 32 inches is times 40 <<< Does that make sense?), so...

40 x 32 = 1,280

Hope this helped!

8 0
3 years ago
Read 2 more answers
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