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castortr0y [4]
3 years ago
15

Solve 2lyl+8=8 please help

Mathematics
1 answer:
zhuklara [117]3 years ago
8 0
2y + 8= 8

2y= 0

|y|= 0

y = 0
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If f(x)=1/x+2 what is f(3+h)?
Wittaler [7]
I don't know if you want the whole x+2 on the bottom or not, but I will put it on the bottom for now.
Replace x with (3+h)

f(3+h)=1/[(3+h)+2]

Now if it's supposed to be JUST x in the denominator...
Replace x with (3+h)

f(3+h)=1/(3+h)+2


Best wishes!
3 0
3 years ago
Simplify the expression, only odds 9-17
Elodia [21]

All exercises involve the same concept, so I'll show you how to do the first, then you can apply the exact same logic to all the others.

The first thing you need to know is that, when a certain quantity multiplies a parenthesis, you can distribute that number to every element in the parenthesis. This means that

a(b+c) = ab+ac

So, a is multiplying the parenthesis involving b and c, and we distributed it: a multiplies both  b and c in the final result.

Secondly, you have to know how to recognize like terms, because they are the only terms you can sum. Two terms can be summed if they have the same literal expression. So, for example, you cannot sum 3x+2y, and neither 5x^2-4x exponents count.

But you can su, for example,

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or

23xy^2z^6 - 17xy^2z^6 = 6xy^2z^6

So, take for example exercise 9:

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We distribute the 1.2 through the first parenthesis:

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And you can distribute the negative sign through the second parenthesis (it counts as a -1 to distribute):

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Now sum like terms:

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3 years ago
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cestrela7 [59]

Answer:

y = 90 -5/2 x

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The angle on the right equals 2y

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Solving for y

2y = 180-5x

Divide by 2

2y/2 = 180/2 -5x/2

y = 90 -5/2 x

4 0
2 years ago
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Airida [17]

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Use a 70% discount coupon or 40%, then 20%, then 10% on your whole purchase?
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