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atroni [7]
3 years ago
13

Which is f(5) for the function –2x2 + 2x – 3?

Mathematics
2 answers:
il63 [147K]3 years ago
7 0
Given:
f(5) for the function -2x² + 2x - 3

usually the value enclosed in a parenthesis in a function is the value of x.

f(x) = -2x² + 2x - 3

So if x = 5 ; then, we simply substitute x by its value

f(5) = -2(5²) + 2(5) - 3
f(5) = -2(25) + 10 - 3
f(5) = -50 + 10 - 3
f(5) = 10 - 50 - 3
f(5) = 10 - 53
f(5) = -43
Damm [24]3 years ago
4 0

Answer:

-43

Step-by-step explanation:

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katovenus [111]

Answer:

55/43

Step-by-step explanation:

(x/y) = 7/3, (x^2/y^2)=49/9, multiply by 3 above and multiply 2 below, 3x^2/2y^2=147/18. Next apply C&D and you will get (3x^2+2y^2)/(3x^2-2y^2)=(147+18)/(147-18)=165/129=55/43

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2 years ago
Simplify, picture attached
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Answer:

01/6

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Step-by-step explanation:

5 0
3 years ago
2 5/6 - 11/4=?ggffcgyujjh
ElenaW [278]
1/12 I think I’m sorry if it isn’t
6 0
3 years ago
A minimum temperature of -4.44°C was recorded at a lake. A minimum temprature of 23.3°C was recorded later on the same day. Dete
GuDViN [60]

Answer:

27.74 is the difference

Step-by-step explanation:

23.3° C - (-4.44° C)

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5 0
2 years ago
There are 8 members on a board of directors. if they must form a subcommittee of 6 members, how many different subcommittees are
Shtirlitz [24]
1. Given a group of n people. There are C(n, r) ways of forming groups of r out of n.

2. Where C(n, r)=\frac{n!}{r!(n-r)!}

3. For example, given {Andy, John, Julia}. We want to pick 2 people to give a gift: we can pick {(Andy, John), (Andy, Julia), (John, Julia)}, so there are 3 ways. So we can list and count.

4. Or we could do this with the formula C(3, 2)=\frac{3!}{2!(1)!}= \frac{3*2*1}{2*1}=3

5. C(8, 6)=\frac{8!}{2!6!}= \frac{8*7*6!}{2*6!}= \frac{8*7}{2}= 4*7=28

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3 years ago
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