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oksano4ka [1.4K]
2 years ago
15

50 points! The campaign manager for one of the five candidates running for office in a city wants to conduct a survey to see how

popular his candidate is among all voters in the city. He chooses the first name on a voter registration list at random then goes through the list, choosing every 15th name after that, cycling through the whole list until he ends up where he started.
What type of sampling method did the campaign manager use?
A.) Non-random sampling

B.) Simple random sampling

C.) Systematic random sampling

D.) Stratified random sampling
Mathematics
1 answer:
luda_lava [24]2 years ago
4 0

Answer:

B

Step-by-step explanation:

He chose the names on the voter registration list radomly

You might be interested in
D is a point on AB, AC=7, AD=6, BC=18
irinina [24]

Answer:

Length of DB = 19 (Approx)

Step-by-step explanation:

Given:

AC=7

AD=6

BC=18

Find:

Length of DB

Computation:

AB = AD + DB

AB = 6 + DB

AC + BC ≥ AB

7 + 18 ≥ 6 + DB

19 ≥  DB

Length of DB = 19 (Approx)

3 0
2 years ago
Solve each system of equations <br> X^2+y^2+18x+29=0<br> X+y=1
tatyana61 [14]

Answer:

two solutions : (-3;4)  and (-5;6)

Step-by-step explanation:

hello :

X²+y²+18x+29=0    ..(1)

X+y=1 ...(2)

by (2) : y = 1 - x

put this value in (1) : x² +(1-x)² +18x+29 = 0

x² +1 +x² -2x+18x +29 =0

2x²+16x +30 = 0

x²+8x+15 =0

delta = b²-4ac     a=1   b=8   c = 15

delta = (8)²-4(1)(15)=64-60 =4 = 2²

X1=(-8+2)/2 = - 3

X2=(-8-2)/2 = - 5

case 1 : x = -3    y = 1 - (-3) = 4

case 2 : x = -5    y = 1 - (-5) = 6

8 0
3 years ago
How do I solve this problem<br>​
bija089 [108]
Attach a photo so we can see the problem
4 0
3 years ago
The expression (X + 3)(x + 2) is the product of two binomials. Which expression is also a product of binomials?
kow [346]

Answer:

B

Step-by-step explanation:

Binomials are expressions containing the sum (or difference) of two terms.

A. is not the answer because pq and qp are <u>products</u>.

C. is not the answer because 3x is not a sum/difference.

D. is not the answer because it is one binomial, not two muliplied together.

6 0
3 years ago
Which of these describes the equation –18x + 9y = –416?
Minchanka [31]

Answer:

We conclude the equation is linear because it can be rewritten in the form y = mx + b.

Hence, option D is correct.

Step-by-step explanation:

The slope-intercept form of the line or linear equation

y = mx+b

where

  • m is the slope
  • b is the y-intercept

<u>Important Tip:</u>

The graph of a linear equation is always a straight line.

Convert the given equation in the slope-intercept form

18x + 9y = -416

subtract 18x from both sides

18x+9y-18x = - 18x-416

simplify

9y = -18x - 416

divide both sides by 9

y=-2x-\frac{416}{9}

Now, comparing the equation y=-2x-\frac{416}{9} with a slop-intercept form of linear equation

  • The slope m = -2
  • The y-intercept b = -416/9

Therefore, we conclude the equation is linear because it can be rewritten in the form y = mx + b.

From the attached graph, is also clear that the graph of the equation y=-2x-\frac{416}{9} is a straight line.

Hence, option D is correct.

3 0
2 years ago
Read 2 more answers
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