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3 years ago

X+y=6 and 2x-y=3. The system of equations ...has no solution, has one solution, or is coincident

Mathematics

1 answer:

Keith_Richards [23]3 years ago

5 0

x+y=6

2x-y=3

3+3=6

2×3-3=3

3+3=6

6-3=3

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20 points!!!!!!!!!!!!!!!!!

Ghella [55]

Answer:

B) 480

Step-by-step explanation:

The given is a regular hexagon so all interior angles are equal to each other their to find the sum:

4*180 = 720 to find the sum of <p+<q+<r+<s we divide this result by 6 because the hexagon has 6 interior angles, then multiply the result by 4

720/6 = 120

<p+<q+<r+<s = 120*4

<p+<q+<r+<s = 480

6 0

3 years ago

Given two vectors a⃗ =−2.00i^+3.00j^+4.00k^ and b⃗ =3.00i^+1.00j^−3.00k^. Obtain a unit vector perpendicular to these two vector

Illusion [34]

we are given two vectors as

$a=-2i+3j+4k$

$b=3i+1j-3k$

now, we can find cross product

$aXb=(-2i+3j+4k)X(3i+1j-3k)$

$=\begin{pmatrix}3\left(-3\right)-4\times \:1&4\times \:3-\left(-2\left(-3\right)\right)&-2\times \:1-3\times \:3\end{pmatrix}$

$aXb=-13i+6j-11k$

$|aXb|=\sqrt{(-13)^2+(6)^2+(-11)^2}$

$|aXb|=\sqrt{326}$

now, we can find normal unit vector

$n=\frac{aXb}{|aXb|}$

now, we can plug values

$n=\frac{(-13i+6j-11k)}{\sqrt{326}}$

$n=\frac{-13}{\sqrt{326}}i+\frac{6}{\sqrt{326}}j-\frac{11}{\sqrt{326}}k$

now, we can find components

$n_x=\frac{-13}{\sqrt{326}},n_y=\frac{6}{\sqrt{326}}j,n_z=-\frac{11}{\sqrt{326}}$

...............Answer

6 0

3 years ago

Help me with this please!!

postnew [5]

Answer:

Step-by-step explanation:

ugly dont remove my stuff ever again or i am going to do it again purrrrrrrrrrrrr

7 0

3 years ago

Help plz me need to know how to do this

Vanyuwa [196]

The answer is 64. Hope it helps you

8 0

3 years ago

What is the simplified form of the product. (x+6)(x+4) =

weeeeeb [17]

Answer:

x² + 10x + 24

Step-by-step explanation:

Use foil to multiply them.

x ( x + 4 ) = x² + 4x

6 ( x + 4) = 6x + 24

Combine like terms: x² + 10x + 24

Hope this helps :)

5 0

3 years ago