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2 years ago

For the function f(x) = 2x +3, evaluate f(3).

Mathematics

2 answers:

aliina [53]2 years ago

8 0

Answer:

${ \tt{f(x) = 2x + 3}}$

f(3) means x = 3, substitute for x as 3 :

${ \tt{f(3) = 2(3) + 3}} \\ = 6 + 3 \\ = 9$

AveGali [126]2 years ago

4 0

Answer:

Step-by-step explanation:

f(3) = 2(3) + 3

= 9

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6x-4(3x-5)=2 solve for x.

jeka57 [31]

Answer:

x = 3

Step-by-step explanation:

6x -4(3x-5) = 2

6x - 12x + 20 = 2

-6x = 2 - 20

-6x = -18

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2 years ago

How is breaking apart the problem 16x34 like solving four simpler problems?

dedylja [7]

10*30=300
10*4=40
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2 years ago

A 12-foot ladder is leaning across a fence and is touching a higher wall located 3 feet behind the fence. The ladder makes an an

Svetllana [295]

Answer:

3 feet

Step-by-step explanation:

A 12-foot ladder is leaning across a fence and is touching a higher wall located 3 feet behind the fence. The ladder makes an angle of 60 degrees with the ground.

ladder is 12 foot

The ladder makes an angle of 60 degrees with the ground.

It form a right angle triangle . ladder is the hypotenuse

$cos(60)=\frac{x}{12}$

$0.5= \frac{x}{12}$

multiply 12 on both sides

x= 6

the distance from the base of the ladder to the bottom of the fence

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7 0

2 years ago

Solve the equation<br> (x-3)^3-( x - 1 )^3 + 7x^2 = 7(3x - 4 )

Yakvenalex [24]

Answer:

x= -1 or x = -2

Step-by-step explanation:

Your equation:

(x−3)^3−(x−1)^3+7x^2=7(3x−4)

Step 1: Simplify both sides of the equation.

x^2+24x−26=21x−28

Step 2: Subtract 21x-28 from both sides.

x^2+24x−26−(21x−28)=21x−28−(21x−28)

x^2+3x+2=0

Step 3: Factor left side of equation.

(x+1)(x+2)=0

Step 4: Set factors equal to zero.

x+1=0 or x+2=0

which equals to x=−1 or x=−2

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1 year ago

Which of the following is equal to the expression below?

rodikova [14]

(8.320)(1)/(3)=

10\root(3)(5)

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2 years ago