A+b=9i-8j+7k+(7i-9k)
=9i-8j+7k+7i-9k
=16i-8j-2k
9a+7b=9(9i-8j+7k)+7(7i-9k)
=81i-72j+63k+49i-63k
=130i-72j
|a|=| 9i-8j+7k |
|a-b|=|9i-8j+7k-(7i-9k)|
=|9i-8j+7k-7i+9k|
=|2i-8j+16k|
i hope this is helping
Answer:
9x^2-6x+6x-4 combine like terms answer is 9x^2-4
Step-by-step explanation:
The python is 2.6pi meters long. This is the circumference because it's the distance around the circle. So, C = 2.6pi
We will plug this into the formula below and isolate r
C = 2*pi*r
2.6pi = 2*pi*r
2.6 = 2*r .... divide both sides by pi
2.6/2 = 2r/2
1.3 = r
r = 1.3
Since r = 1.3, this means that the radius is 1.3 meters.
By definition, the arc length is given by:
S = R * theta
Where,
Theta: central angle
R: radio
Substituting the values we have:
S = (1600) * (π / 8)
Rewriting we have:
S = 200π feet
S = 628.3185307 feet
Round to the nearest foot:
S = 628 feet
Answer:
The length of the curve to the nearest foot is 628 feet.
Step-by-step explanation:
2(x + 5) + 6x = 8x + 10
2x + 10 + 6x = 8x + 10
8x + 10 = 8x + 10
Since this equality is true for any real values of x, there are infinitely many solutions for x.
The best answer here is "Many Solutions".
