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3 years ago

For f(x)=4x+1 and g(x)=(x^2)-5, find (f+g)(x).

Mathematics

1 answer:

Maslowich3 years ago

8 0

$f(x)=4x+1;\ g(x)=x^2-5\\\\(f+g)(x)=f(x)+g(x)\\\\(f+g)(x)=(4x+1)+(x^2-5)=4x+1+x^2-5=x^2+4x+(1-5)\\\\=\boxed{x^2+4x-4}$

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Solnce55 [7]

Answer:

B. $5005

Step-by-step explanation:

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These total $5005.

3 0

4 years ago

Express y=-2x^2-5x-18 as y=a(x-p)(x-q), where a,h, and k are constants. Hence state the equation of the line of symmetry and hen

UkoKoshka [18]

Answer:

y = -2·x^2 - 5·x - 18

y = -2·(x^2 + 10·x + 36)

y = -2·(x - (-5 - √11·i))·(x - (-5 + √11·i))

Maybe there is a typo in the original question, because there is no factorisation in the real numbers.

Because the question is " find the minimum value of y" the coefficient before x^2 must be a positive number. so it could be

y = 2·x^2 - 5·x - 18

Can you check this out?

4 0

3 years ago

The elevation E, in meters, above sea level at which the boiling point of a certain liquid is t degrees Celsius is given by the

otez555 [7]

Given function is

$E(t) = 1100(80 - t) + 500(80 - t)^2$

At t= 79.5 degree.

So we can place t= 79.5 in given equation

$E(79.5) = 1100 (80 - 79.5) + 500* (80 - 79.5)^2
$
= $1100 * 0.5 + 500 * (0.5)^2$
= $550 + 500 * 0.25$
= $550 + 125 = 625$

So elevation equal to 625 meter at t = 79.5 degree.

3 0

3 years ago

When we think of surface area - What real-life things do we think of?

zepelin [54]

Answer:

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Step-by-step explanation:

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4 years ago

Please help me add an explanation too pls

Elanso [62]

Answer:

42.5 inches

Step-by-step explanation:

because you gotta divide 349 by 8 to get ye height

8 0

3 years ago