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3 years ago

How to solve foil methods give me a example please

1 answer:

8 0

FOIL: First, Inner, Outer, Last.
(2x+3)(3x+2)
First: 2x•3x=6x^2 Inner: 3x•3=9x
Outer: 2x•2=4x Last:3•2=6
6x^2+9x+4x+6= 6x^2+13x+6

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Which of the following functions has a graph that is a line? f(x) = |x| f(x) = x f(x) = x 2

sattari [20]

Answer:

f(x) = x

Step-by-step explanation:

f(x) = |x| will give you V graph

f(x) = x will give you line graph (linear)

f(x) = x² will give you a curve graph

7 0

3 years ago

z varies jointly with x and y. When x = 2 and y = 3, z = 60. What is the value of z when x = 4 and y = 9?

kondor19780726 [428]

2 x 3 = 6 x 10 = 60
<em>Assuming that you are using the same rule:
</em><em>4 x 9 x 10 = 360
</em>The value of z when x = 4 and y = 9 is 360. Hope this helped!

6 0

3 years ago

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A 90 ° angle is divided into 2 angles. Find the size of the angles. 3x+15 and 2x+25

fenix001 [56]

The two angles are 45 degrees.

Step-by-step explanation:

You are just halfing the 90 degree angle, so all you have to do is divide 90 by two, and you have 45.

3 0

2 years ago

Find the circumference

tia_tia [17]

Answer:

$6.25\pi$

Step-by-step explanation:

A circumference of a circle can be determined by this: 2*pi*r

We're given the diameter. Divide that by 2 to get the radius.

6.45/2 = 3.225

Now multiply that by 2*pi. That gives us 2 * 3.14 * 3.225 = 20.253.

This could've also been done easier by doing pi*d where d is the diameter and you give the answer by multiplying them both. Also works, but the above formula is just key to many things and can also be used to derive the simpler one. Hope it helps! :)

7 0

1 year ago

Read 2 more answers

Given graph a above,what is the value of f(-2)?

WITCHER [35]

Answer:

y=3

Step-by-step explanation:

F(x)=f(-2) so go to -2 on the x axis and then find the y

4 0

2 years ago