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vladimir2022 [97]
2 years ago
10

The Department of Homeland Security wants to test a computer virus that it has developed to combat hackers. They plan to test ru

n the virus on randomly selected computers with pre-set "hacker" programs.
choose one:

-census

-cluster sampling

-convenience sampling

-simple random sampling

-stratified sampling



choose one:

-experiment

-observational study

-simulation

-survey
Mathematics
1 answer:
ra1l [238]2 years ago
8 0

Answer:

Simple random sampling  

Observational study

Step-by-step explanation:

Since in the given situation it is mentioned that department wants to test the computer virus and have to run the virus on the random selected computers so here the simple random sampling would be done and based on the simple random sampling the observational study would be done

Therefore the above represent the answer

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What is 0.94% written as a decimal?​
kenny6666 [7]

Answer:

0.0094

Step-by-step explanation:

0.94%=0.0094

8 0
2 years ago
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What are the coordinates of the x-intercepts of the parabola y = x² - 8x + 15?
tamaranim1 [39]

Answer:

(3, 0) and (5, 0)

Step-by-step explanation:

we have

y=x^{2}-8x+15

we know that

The x-intercepts are the values of x when the value of y is equal to zero

so

For y=0

x^{2}-8x+15=0

The formula to solve a quadratic equation of the form

ax^{2} +bx+c=0

is equal to

x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}

in this problem we have

x^{2}-8x+15=0  

so

a=1\\b=-8\\c=15

substitute in the formula

x=\frac{-(-8)\pm\sqrt{-8^{2}-4(1)(15)}} {2(1)}

x=\frac{8\pm\sqrt{4}} {2}

x=\frac{8\pm2} {2}

x=\frac{8+2} {2}=5

x=\frac{8-2} {2}=3

so

x=3, x=5

therefore

The x-intercepts are (3,0) and (5,0)

4 0
2 years ago
Line CD contains points A (4, -7) and B (4, 8). The slope of line CD is
mylen [45]
<span>To find the slope, you divide the difference of the y-coordinates of a point on a line by the difference of the x-coordinates. It is expressed as:

slope = (y2 - y1) / (x2-x1)
slope = 8-(-7) / 4 - 4
slope = 15 / 0
slope = undefined <------ SECOND OPTION

The line should be vertical where the slope is undefined. Hope this answers the question. Have a nice day.</span>
6 0
3 years ago
Read 2 more answers
Please help me I think the answer is 12 cm .
-Dominant- [34]

You can find the value of the hypotenuse if you apply the Pythagorean Theorem, which is show below:


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 a and b: legs (the sides that form the right angle).


 Then, you have:


 h²=a² + b²

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6 0
3 years ago
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yan [13]
I hope this helps you



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