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Olin [163]
3 years ago
12

Free points and brainlest andwers if you answrt this

Mathematics
2 answers:
DiKsa [7]3 years ago
8 0

Answer:

idk

Step-by-step explanation:

Juliette [100K]3 years ago
5 0
4. alternate interior angles. x= 3
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A survey of 80 randomly selected companies asked them to report the annual income of their presidents. Assuming that incomes are
Artyom0805 [142]

Answer:

The 90% confidence interval estimate of the mean annual income of all company presidents is ($579,545, $590,580).

Step-by-step explanation:

The information provided is:

n=80\\\sigma=30,000\\\bar x=585062.50\\\text{Confidence level} = 90\%

The critical value of <em>z</em> for 90% confidence level is, 1.645.

Compute the 90% confidence interval estimate of the mean annual income of all company presidents as follows:

CI=\bar x\pm z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}\\\\=585062.50\pm 1.645\times\frac{30000}{\sqrt{80}}\\\\=585062.50\pm5517.50\\\\=(579545, 590580)

Thus, the 90% confidence interval estimate of the mean annual income of all company presidents is ($579,545, $590,580).

This interval implies that there is 90% probability that the true mean annual income of all company presidents is within this interval.

4 0
3 years ago
Help I have to turn this in. In a couple hours
Gelneren [198K]

28. Surface Area

This is some sort of house-like model so for every face we see there's a congruent one that's hidden.  We'll just double the area we can see.

Area = 2 × ( [14×9 rectangle] + 2[15×9 rectangle]+[triangle base 14, height 6] )

Let's separate the area into the area of the front and the sides; the front will help us for problem 29.

Front =  [14×9 rectangle] + [triangle base 14, height 6]

          = 14×9 + (1/2)(14)(6) = 14(9 + 3) = 14×12 = 168 sq ft

OneSide =  2[15×9 rectangle] = 30×9 = 270 sq ft

Surface Area = 2(168 + 270) = 876 sq ft

Answer: D) 876 sq ft

29.  Volume of an extruded shape is area of the base, here the front, times the height, here 15 feet.  

Volume = 168 * 15 = 2520 cubic ft

Answer: D) 2520 cubic ft

6 0
3 years ago
|(2+1/3) + 0.3| = 3.5
nignag [31]

Answer:

False

Step-by-step explanation:

l(2+1/3) + 0.3| = 3.5

|7/3+3/10|=7/2

|79/30|=7/2

158=210

false

3 0
3 years ago
Read 2 more answers
-7x + 9 In the expresion show, which of the following is the constant?
Colt1911 [192]

Answer:

9

Step-by-step explanation:

The constant is the plain number that doesn't have a letter attached.

6 0
3 years ago
Read 2 more answers
Stiviko's approved work plan included 4 technicians to create 200 web pages
jenyasd209 [6]

Answer:

10 pages per technician per day is the unit metric for the production work.

Step-by-step explanation:

Consider the provided information.

Stiviko's approved work plan included 4 technicians to create 200 web pages  over 5 days.

They can create 200 web pages over 5 days.

\frac{200}{5}=40

That means in one day they can create 40 pages.

There are 4 technicians who work, therefore the unit metric for the production work is: \frac{40}{4}=10

Hence, 10 pages per technician per day is the unit metric for the production work.

6 0
4 years ago
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