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vampirchik [111]
4 years ago
8

Given the relation y = –4x2 – 8, if the input is 2, what is the output?

Mathematics
2 answers:
pochemuha4 years ago
8 0

Answer:

So is it right

Step-by-step explanation:

UkoKoshka [18]4 years ago
5 0
-24. 
You Find This By Putting In To The Second Power.
-4 x 2² - 8
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At a school with 100? students, 33 were taking? Arabic, 32 ?Bulgarian, and 40 Chinese. 9 students take only? Arabic, 12 take onl
Stels [109]

Answer: The answer is 4 and 32.

Step-by-step explanation: Let "A", "B" and "C" represents the set of students who were taking Arabic, Bulgarian and Chinese respectively.

The, according to the given information, we have

n(A)=33,~~n(B)=32,~~n(C)=40,~~n(A\cap B)=14.

Let 'p' represents the number of students who take all the three languages, then

n(A\cap B\cap C)=p.

Also,

n(A)-n(A\cap B)-n(A\cap C)+n(A\cap B\cap C)=9\\\\\Rightarrow n(A\cap B)+n(A\cap C)=24+p~~~~~~~~~~~~~~(a),\\\\n(A\cap B)+n(B\cap C)=20+p~~~~~~~~~~~~~~(b),\\\\n(B\cap C)+n(A\cap C)=20+p~~~~~~~~~~~~~~~(c).

From here, we get after subtracting equation(c) from (b) that

n(A\cap B)=n(A\cap C)=14.

Therefore,

p=14+14-24=4, and from equation (a), we find

n(B\cap C)=24-14=10.

Thus,

n(A\cap B\cap C)=4 and

n(A\cup B\cup C)=n(A)+n(B)+n(C)-n(A\cap B)-n(B\cap C)-n(A\cap C)+n(A\cap B\cap C)\\\\\Rightarrow n(A\cap B\cap C)=33+32+40-9-12-20+4\\\\\Rightarrow n(A\cap B\cap C)=68.

Thus, the number of students who take all the three languages is 4 and the number of students who take none of the languages is 100-68 = 32.

5 0
3 years ago
__<br> Find the midpoint of AB, where<br> A(7,6) and B(4, 2).
AVprozaik [17]

Answer:

(11/2,4)

Step-by-step explanation:

8 0
4 years ago
Tehee fwee pointsssssss<br><br><br><br> tbh this is the rest of my points sooooooooo
miv72 [106K]
Thank you and have a great day.
6 0
3 years ago
Read 2 more answers
4x + 12 = 12 one solution
Vsevolod [243]

Answer:

x=0

Step-by-step explanation:

4x+12=12

-12      -12

<u>4x=0</u>

4       4

x=0

7 0
4 years ago
Daria makes and sells stuffed toys. She uses special fabric to cover a foam cube to make a number cube. How much fabric did Dari
denis-greek [22]

Answer:294

Step-by-step explanation: you’re trying to find the surface area of the cube to find out how much material Daria needs. To do so find the area of 1 face of the cube (which is a square). The problem gives us 1 side of the square as 7cm. A square has the same length for its 4 sides, so to find the area of that 1 face do 7 x 7=49. The question also gives the hint that a cube has 6 faces so you would multiply the 49 by 6 to get the total surface area of the cube. 49 x 6=294.

Not sure if this is right but hope it helps.

8 0
3 years ago
Read 2 more answers
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