PLEASE HELP I CANT FIGURE THIS OUT!!!!!

Mathematics

1 answer:

Serjik [45]3 years ago

5 0

I think it’s A. X4/21

You might be interested in

NEED HELP ASAP! Which condition would prove JKL ~ XYZ?

ANTONII [103]

The answer might be C =8

3 0

3 years ago

What two number multiply to negative 20 and add to 19

OLEGan [10]

$x;\ y-the\ numbers\\\\ \left\{\begin{array}{ccc}xy=-20\\x+y=19&\Rightarrow&x=19-y\end{array}\right\\\\subtitute\ to\ first\ equation:\\\\(19-y)y=-20\\19y-y^2+20=0\\-y^2+19y+20=0\ \ \ |change\ signs\\y^2-19y-20=0\\y^2-20y+y-20=0\\y(y-20)+1(y-20)+0\\(y-20)(y+1)=0\iff y-20=0\ or\ y+1=0\\\\y=20\ or\ y=-1$

$x=19-y\\\\for\ y=20\Rightarrow x=19-20=-1\\\\for\ y=-1\Rightarrow x=19-(-1)=20\\\\Answer:\boxed{\boxed{20\ and\ -1}}$

4 0

4 years ago

What is the least number of different colours needed to paint a cube so no adjacent faces have the same colour?

kotegsom [21]

Well, we know that cube has 6 sides

So, the least number of different colors needed to paint a cube so no adjacent faces have the same color is :
At least 3

Hope this helps

4 0

3 years ago

FIND THE SLOPE OF THE LINE

Irina18 [472]

Answer:

Step-by-step explanation:

simply it down, and it gose to 1

8 0

3 years ago

An equilateral triangle has sides 8 units long. An equilateral triangle with sides 4 units long is cut off at the top, leaving a

Darina [25.2K]

Answer: