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2 years ago

14

Please help i don’t understand

1 answer:

34kurt2 years ago

4 0

Answer:

D

Step-by-step explanation:

First of, let's make a table for y = cos(x)

(x , y): (0 , 1) (π/2 , 0) (π , -1) (3π/2 , 0) (2π , 1)

Now, making a table for y = 2cos(x) is simple. We just have to multiply all the y-values from the previous table by 2.

(x , y): (0 , 2) (π/2 , 0) (π , -2) (3π/2 , 0) (2π , 2)

Graphing these coordinates, we find that the answer is D.

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Let $f$ be a function such that $f(x+y) = x + f(y)$ for any two real numbers $x$ and $y$. if $f(0) = 2$, then what is $f(2012)?$

marusya05 [52]

<span>Given:

f(0) = 2</span>

So first of all, we let x = 2012, y = 0:

<span>
Then, F(2012) = 2012 + f(0)

Since f(0) = 2, then f(2012) = 2012 + 2 = 2014.

To add, </span>the process that relates an input to an output is called a function.

<span>There are always three main parts of a function, namely:

</span>Input

The Relationship

The Output

The classic way of writing a function is "f(x) = ... ".

What goes into the function is put inside parentheses () after the name of the function: So, f(x) shows us the function is called "f", and "x" goes in.

What a function does with the input can be usually seen as:

<span>f(x) = x2</span><span> reveals to us that function "f" takes "x<span>" and squares it.</span></span>

3 0

3 years ago

Goryan [66]

Given:

(2, 4) and (3, 3) are on the line.

To find:

The equation of line in point slope form.

Solution:

If a line passes through a point $(x_1,y_1)$ with slope m, then the point slope form of the line is

$y-y_1=m(x-x_1)$

(2, 4) and (3, 3) are on the line. So, slope of the line is

$m=\dfrac{y_2-y_1}{x_2-x_1}$

$m=\dfrac{3-4}{3-2}$

$m=\dfrac{-1}{1}$

$m=-1$

The slope of a line is -1 and it passes through (2,4). So, an equation in point slope form is

$y-4=-1(x-2)$

Therefore, an equation of the line in point slope form is $y-4=-1(x-2)$ .

8 0

2 years ago

Friday<br> Use the equation to fill in the table.<br> y = 2x -7

Ostrovityanka [42]

Answer:

x=7

Step-by-step explanation:

7=2x-7

-2x-7-7

-2x=-14

x=-14÷2

x=-7

7 0

1 year ago

A circular window is drawn on architectural plans where each unit is a foot on a coordinate grid. the window is modeled by the e

Pie

The equation indicates that the center of the window is 12 feet from the ground and the distance the window spans 6 feet.

<h3>What is the general equation of a circle?</h3>

The equation of a circle is given by the formula,

$(x-a)^{2} + (y -b)^{2} = r^{2}$

where (a,b) is the coordinate of the center of the circle, and r is the radius of the circle.

According to the given equation, if we compare this equation with the general equation of the circle.

$(x-4)^{2} + (y-12)^{2} = 9$

$(x-a)^{2} + (y -b)^{2} = r^{2}$

$(x-4)^{2} + (y -9)^{2} = 3^{2}$

On observing this equation we will get that the value of (a,b) is (4,12).

Thus, The equation indicates that the center of the window is 12 feet from the ground

window span = diameter of circle

window span = 2r

= 2 × 3 (radius = 3)

= 6

Hence, The equation indicates that the center of the window is 12 feet from the ground and the distance the window spans 6 feet.

To learn more about Equation of the circle from the given link

brainly.com/question/22223658

#SPJ4

6 0

1 year ago

(Show work thank you!) Ticket sales for the annual Fall Festival were underway. Four people bought tickets on the first day of s

maria [59]

Answer:

684. tbh I'm not sure if I did this right

Step-by-step explanation:

4x2= 8

4+8= 12

12x2= 24

24x28= 672

672+12= 684

6 0

3 years ago