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2 years ago

F(x) = 3x+2 what is f(5)

Mathematics

2 answers:

scoray [572]2 years ago

6 0

Answer: 17

Step-by-step explanation:

3(5)+2

15+2

F(5)=17

Aleksandr-060686 [28]2 years ago

5 0

When you are given a function and it asks you what f(a number) is then you plug in the number in the parentheses into everywhere you see x in the function equation.

Essentially this equation is saying that x is equal to 5

f(5)

f(x) = 3x + 2

f(x) = 3(5) + 2 ---> 15 + 2 ---> 17

so...

f(5) = 17

Hope this helped!

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Describe the net for a square pyramid with a base with edges of 6 inches and slant height of 4 inches. Calculate the surface are

motikmotik

The square pyramid with a base with edges of 6 inches and slant height of 4 inches have a surface area of 84 in².

The net of the square pyramid have a base of 6 inches and the height of each triangle is 4 inches.

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more numbers and variables.

The square pyramid with a base with edges of 6 inches and slant height of 4 inches. Hence:

Surface area = (6 * 6) + 2(6 * 4) = 84 in²

The net of the square pyramid have a base of 6 inches and the height of each triangle is 4 inches.

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2 years ago

The slope that passes through the point (-2,-4) and (-3,-8) is

enot [183]

Answer:

$y=4x+b$ (four being the slope)

Step-by-step explanation:

So lets use

ΔY/ΔX

or the y2-y1 over x2-x1

$\frac{-8+4}{-3+2}$

$\frac{-4}{-1}$

Therefore, the slope is 4

7 0

2 years ago

Read 2 more answers

Find an equation of the circle and sketch it if it has: Center on y=4, tangent x-axis at (–2, 0)

Digiron [165]

Answer:

$(x+2)^2+(y-4)^2=16$

OK, lets start by drawing a basic graph (the first one) so we can visualize.

We already know that the y coordinate of the circle's center is $4$ .

We know that the circle is tangent to the $X$ axis at $(-2,0)$

That means the x coordinate of the center has to be $-2$ , as the tangent is a point on the edge of the circle that touches a line at exactly one point.

The radius is the distance from the center of the circle to its edge. We know the center's location now, it is $(-2, 4)$ and a point on the edge of the circle (the tangent point) which is $(-2,0)$ . so the distance between the points is 4 which is the radius (you can use the distance formula, but it's quite oblivious.)

We can imagine the circle should look like this (the second one):

Now we can piece together an equation

The equation of a circle is $(x-h)^2+(y-k)^2=r^2$ where $(h,k)$ is the center and $r$ is the radius. When we put the numbers in: we get $(x-(-2))^2+(y-(4))^2=4^2$ which can be simplified into $(x+2)^2+(y-4)^2=16$ which is the answer.