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____ [38]
3 years ago
12

Please help me with this. 10 points. thank you.

Mathematics
1 answer:
Rudiy273 years ago
5 0

Answer:

7.639 times 10^6

Step-by-step explanation:

You move the decimal all the way until you get a number between 1 and 10. Then you count the digits behind where you would place the decimal (7.639) and that would be your exponent. Finally, place it in scientific notation from to get 7.639 times 10^6

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Consider random samples of size 50 from a population with proportion 0.15
WITCHER [35]

Answer:

a) Mean = 0.75

b) Standard error = 0.051

c) Yes                              

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 50

Sample proportion , p = 0.15

a) Mean

\mu = np = 50(0.15) = 7.5

b) Standard error

S.E = \sqrt{\dfrac{p(1-p)}{n}} = \sqrt{\dfrac{0.15(1-0.15)}{50}} = 0.051

c) Application of central limit theorem

Since the sample size is larger than 30, we cam apply central limit theorem for normal approximation.

6 0
4 years ago
Which statement is sometimes true:
Lelu [443]

Answer:

4. A rectangle is a square

Step-by-step explanation:

A rectangle can be a square, but not always. A rectangle has 2 pairs of parallel sides, 2 pairs of congruent sides, and 4 right angles. Squares have 2 pairs of parallel sides, 4 congruent sides, and 4 right angles. So, the difference between the two is that adjacent sides are not necessarily congruent in rectangles, but they are in squares. This means that some rectangles can be a square. If a rectangle has all congruent sides, then it is a square. On the other hand, some rectangles do not have all congruent sides, and thus are not squares.

6 0
2 years ago
You are giving a rectangle with dimensions of: length = 60 inches and width = 4j. The perimeter of the rectangle is 400 inches.
Illusion [34]

Answer:

perimeter is sum of all four sides; two of which are '4j' and other two are 60 inches each

Step-by-step explanation:

P= 2(4j) + 2(60)

We know perimeter is 400 inches

400 = 8j + 120

8j = 280

j = 35

4 0
3 years ago
A club wants to choose a committee of 4 people from its 12 members.
AlladinOne [14]
Hello!
.
The answer to your question is 495 ways.
.
n = 12
r = 4
.
nCr = n1 / (n-r)! r1
12C4 = 12! / (12-4)! 4!
12C4 = 12x11x10x9x8! / 8! 4!
12C4 = 11880 / 24
12C4 = 495
:)
3 0
3 years ago
Read 2 more answers
What is the full answer to pie
Anit [1.1K]

Answer:

\pi= 3.1415926...= c/d

Step-by-step explanation

Pie is infinite so there is no simple answer.

circumference divided by the diameter = pie

6 0
2 years ago
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