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3 years ago

F(x) = 2x - 4 f(3) = [?]

Mathematics

2 answers:

Serga [27]3 years ago

5 0

2 would be the answer. Replace the x with the three and multiply that with the 2 and then subtract 4.

Oliga [24]3 years ago

3 0

2(3)-4 =2 very simple replace x with 3

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The area of a cell phone is 12 inches squared. What is the length of the missing side?

zzz [600]

Answer:

Step-by-step explanation:

8 0

3 years ago

The diffrence between 2 numbers is 1 and their product Is 132

il63 [147K]

Answer:

x = 12

y = 11

For any clarification, Please contact me in the comment section :)

I Hope It Helps .

Step-by-step explanation:

$Let -the-unkonown- numbers-be-x-and-y \\x-y = 1 (1)\\xy = 132 (2)\\Make-x-subject-of-formula-in-equation1 \\x = 1+y\\Substitute , 1+y for- x -in -equation ,2\\y(1+y) = 132\\y + y^{2} =132\\y^{2} +y-132=0\\Solve- the-quadratic-equation.\\y = 11\\substitute- 11 -for- y- in- equation -1- 0r- 2\\x -y = 1\\x-11 = 1\\x = 1+11\\x = 12$

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3 years ago

What is the value of y in the equation, 5x+2y=20, when x=0.3

gregori [183]

Answer:

y = -5/2x + 10

Step-by-step explanation:

Step one: Add -5x to both sides.

5x + 2y + -5x = 20 + -5x

2y = -5x + 20

Step two: Divide both sides by two.

2y/2 = -5x + 20/ 2

y = -5/2x + 10

Hope my answer help.

4 0

3 years ago

IM TAKING THE TEST RN PLEASE HELP ME ASAP :(

12345 [234]

Answer:

Step-by-step explanation:

x=17

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

6(x−5)=72

Step 1: Simplify both sides of the equation.

6(x−5)=72

(6)(x)+(6)(−5)=72(Distribute)

6x+−30=72

6x−30=72

Step 2: Add 30 to both sides.

6x−30+30=72+30

6x=102

Step 3: Divide both sides by 6.

pelase vote brainlist

6 0

3 years ago

Read 2 more answers

The diameter of a circle is 8 kilometers. What is the angle measure of an arc kilometers long?

inn [45]

Answer: 14.32 degrees

The circle has a diameter of 8 kilometers, so the perimeter would be:
perimeter= pi * diameter
perimeter= 22/7 * 8 kilometers= <span>25.14 kilometers

A full perimeter </span>of the circle, which is 25.14km, has 360° angle. So 1km arc would be: 1km/ 25.14 km * 360°= 14.32°

7 0

2 years ago