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3 years ago

If f(x)=2x+7 and g(x)=11x-4, find (f+g)x.

Mathematics

1 answer:

klemol [59]3 years ago

7 0

Answer:

(f+g)(x) = 13x + 3

Step-by-step explanation:

Rewrite f(x)=2x+7 and g(x)=11x-4 in columns, as follows:

f(x)=2x+7

+g(x)=11x-4

----------------

Now add each column separately.

f(x)+g(x) = (f+g)(x) ("the sum of functions f and g")

2x + 11x = 13x, and, finally, 7-4 = 3.

Therefore,

f(x)=2x+7

+g(x)=11x-4

----------------

(f+g)(x) = 13x + 3

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The battery on McKenzies old computer can last 4(1/5) hours. She bought a new computer that has a battery that can last 40% long

Solnce55 [7]

Answer:

$5\frac{22}{25}\ hours$

Step-by-step explanation:

we know that

$4\frac{1}{5}\ hours=\frac{4*5+1}{5}=\frac{21}{5}\ hours$

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Let

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The equation that represent this situation is

$x=\frac{140}{100} (\frac{21}{5})=\frac{2,940}{500}\ hours$

convert to mixed number

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3 years ago

Can someone please answer this please!

DaniilM [7]

Answer:

T = ±22

Step-by-step explanation:

Let's solve your equation step-by-step.

0=−16t2+7744

Step 1: Add 16t^2 to both sides.

0+16t2=−16t2+7744+16t2

16t2=7744

Step 2: Divide both sides by 16.

16t2

7744

t2=484

Step 3: Take square root.

t=±√484

t=22 or t=−22

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3 years ago

Simplify the expression 2x+3(x-6)

Bingel [31]

Answer:

5x-18

Step-by-step explanation:

2x+3x-18

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makvit [3.9K]

Answer:

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Step-by-step explanation:

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Answer:

Option 1 and Option 4

Step-by-step explanation:

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2 years ago

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