4 years ago

Buenas tardes

Mathematics

1 answer:

DiKsa [7]4 years ago

5 0

No Podemos abrir su foto :c

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If f(x)=4x2=1 and g(x)=x2-5, find (f-g)(x)<br>A:3x2+6<br>B:5x2-6<br>C:3x2-4<br>D:5x2-4

Alex787 [66]

For this case we have the following functions:

$f (x) = 4x ^ 2 + 1\\g (x) = x ^ 2-5$

We must find $(f-g) (x):$

By definition of operations with functions we have:

$(f-g) (x) = f (x) -g (x)$

So:

$(f-g) (x) = f (x) -g (x) = 4x ^ 2 + 1- (x ^ 2-5) = 4x ^ 2 + 1-x ^ 2 + 5 = 3x ^ 2 + 6$

Answer:

Option A

$3x ^ 2 + 6$

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4 years ago

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3 years ago

Sum of two numbers is 58 and the smaller number is 20 less than the larger number

Dmitrij [34]

Answer:

X=38 ANS. FOR THE LARGER NUMBER.

Y=20 ANS. FOR THE SMALLER NUMBER.

Step-by-step explanation:

38+Y=58

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3 years ago

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s344n2d4d5 [400]

For this case we have by definition, if "y" varies directly with "x", then it is true that:

$y = kx$

Where:

k: It is the constant of proportionality

We have the following equation:

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$k = 2.5$

Answer:

$k = 2.5$

Option B

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3 years ago