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frez [133]
3 years ago
9

Jacob wants to know how many students in his school enjoy watching space travel programs on TV. He poses this question to all 20

students in his history class and finds that 80% of his classmates enjoy watching space travel programs on TV. He claims that 80% of the school's student population would be expected to enjoy watching space travel programs on TV. Is Jacob making a valid inference about this population?
Mathematics
2 answers:
dusya [7]3 years ago
8 0
No.

cuz' "<span>He poses this question to all 20 students in his history class" and that is not a random sample of the school's student - they are all history buffs! lol</span>
Naddik [55]3 years ago
4 0
No because he has not went to other classes
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If f(x)=2x-4, what would be the answer if f(3)-1??
Vinil7 [7]

Answer:

1

Step-by-step explanation:

We have the function

f(x) = 2x - 4

and we want to know the value of f(3) - 1.

The first step is to find f(3) ; we can subtract 1 from it at the end! But what does f(3) mean?

Basically, we're saying <em>"what is the value of the function when </em>x = 3<em> ?"</em>

So, we simply replace x with 3 in the function, and we get:

f(3) = 2\times 3 - 4 = 2.

Finally, we subtract 1 to find f(3) - 1 = 1.

3 0
3 years ago
The width of a rectangular rug is 6 feet if the perimeter is 24 feet what is the area of the rug?
babymother [125]

Answer:

36 feet squared

Step-by-step explanation:

Finding the perimeter of an object is adding all of the sides together. If the width of the rug is 6 feet then we know that there are two sides that length. Add those together.

6 feet + 6 feet = 12 feet

You would subtract the number you get from the perimeter.

24 feet - 12 feet = 12 feet

And then divide the number by the number of sides left, 2, to get each of their lengths.

12 feet / 2 feet = 6 feet

To find the area of a rectangle you multiply length times width, which in this case both are 6 feets.

6 feet x 6 feet = 36 feet squared

6 0
3 years ago
Can someone please help? i’ll make you a brainliest.
Darya [45]

Answer:

b

Step-by-step explanation:

4 0
3 years ago
16j + -6j + -12j = -10
nordsb [41]

Answer:

j = 5

Step-by-step explanation:

16j + -6j + -12j = -10

Combine like terms

10j -12j = -10

-2j = -10

Divide by -2

-2j/-2 = -10/-2

j = 5

8 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=3%20%2B%20%284%20%2B%205%29%20%3D%20%283%20%2B%204%29%20%2B%20m" id="TexFormula1" title="3 + (
max2010maxim [7]

Answer:

The value of m in the expression is 5

Step-by-step explanation:

Given expression as :

3 + ( 4 + 5 ) = ( 3 + 4 ) + m

Or,  3 + ( 9 ) = ( 7 ) + m

Or,  12  = 7 + m

∴   m = 12 - 7 = 5

Hence The value of m in the expression is 5   Answer

8 0
3 years ago
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