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guajiro [1.7K]
3 years ago
8

In which survey was a parameter reported? Select two answers. (25 POINTS PLEASE HELP)

Mathematics
2 answers:
NISA [10]3 years ago
8 0

Answer:

B and D

This is what a parameter is it should help you on the rest of the school year "The value of a parameter is a fixed number. In contrast to this, since a statistic depends upon a sample, the value of a statistic can vary from sample to sample. Suppose our population parameter has a value, unknown to us, of 10. One sample of size 50 has the corresponding statistic with value 9.5. Another sample of size 50 from the same population has the corresponding statistic with value 11.1." The only ones that fit this is  b and d

sertanlavr [38]3 years ago
6 0

Answer:

answer is C

Step-by-step explanation:

A survey reported that out of 50 teenagers, 9 said they get their news from a newspaper.

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30 POINTS
Romashka [77]

calculating each of the products

noting that i² = (√- 1 )² = - 1

(1 + 2i)(8i) ( distribute by 8i )

= 8i + 16i² = - 16 + 8i ← complex number

(1 + 2i)(2 - 5i) ( expand using FOIL )

= 2 - 5i + 4i - 10i²

= 2 - i + 10 = 12 - i ← complex number

(1 + 2i)(1 - 2i) ( expand using FOIL )

= 1 - 2i + 2i - 4i²

= 1 + 4 = 5 ← real number

(1 + 2i)(4i) ( distribute by 4i )

= 4i +8i² = - 8 + 4i ← complex number

(1 + 2i)(1 - 2i) is the only product which results in a real number


7 0
3 years ago
A car uses 1 gallon of gasoline for every 25 miles driven. At the start of a trip the tank was full of gasoline. After driving 5
dezoksy [38]

Answer:

d = 22 - x / 25

Step-by-step explanation:

The first thing is to calculate the tank capacity, we know that per gallon 25 miles are traveled and at 500 miles there were still two gallons, therefore:

500 miles / 25 miles / gallon = 20

and how there were still 2

20 + 2 = 22

the tank has a 22 gallon capacity

Therefore the equation would be:

d = 22 - x / 25

where x is the number of miles traveled.

for example, if they have traveled 500 miles it would be:

d = 22 - 500/25 = 22 - 20

d = 2 gallons

we can verify that it is correct because it is what the statement says

8 0
3 years ago
Identify p, b, and a. Do not solve for the unknown.<br><br> 10.9 is what percent of 34?
Rashid [163]
10.9 = x% of 34

10.9 is the amount
x% is the percent
34 is the base
8 0
3 years ago
What is the slope of the line given by the equation y= 11x + 5?
Anton [14]

Answer:

The slope is 11

Step-by-step explanation:

y=mx+b

Where m is slope, x is variable, and b is the y-intercept.

5 0
3 years ago
Read 2 more answers
The sum of four consecutive odd integers is three more than five times the least of the integers. Find the integers.
Olegator [25]

Answer:

<h3>              9, 11, 13, 15</h3>

Step-by-step explanation:

{k - some integer}

2k+1  - the first odd integer (the least)

5(2k+1)  - five times the least

5(2k+1)+3 -<u> three more than five times the least</u>

2k+1+2 = 2k+3  - the odd integer consecutive to 2k+1

2k+3+2 = 2k+5  - the next odd consecutive integer (third)

2k+5+2 = 2k+7  - the last odd consecutive integer (fourth)

2k+1+2k+3+2k+5+2k+7 - <u>the sum of four odd consecutive integers</u>

2k+1 + 2k+3 + 2k+5 + 2k+7 = 5(2k+1) + 3

8k + 16 = 10k + 5 + 3

     - 10k       -10k

-2k + 16 = 8

     -16       - 16    

      -2k = -8  

    ÷(-2)    ÷(-2)  

      k = 4

2k+1 = 2•4+1 = 9

2k+3 = 2•4+3 = 11

2k+5 = 2•4+5 = 13

2k+7 = 2•4+7 = 15  

Check: 9+11+13+15 = 48;  48-3 = 45;  45:5 = 9 = 2k+1

4 0
3 years ago
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