A.<span>Yes, because if you start with 103 pencils and you take away 98 pencils you will be left with 5 pencils. The answer should be +5</span>
Start by expanding the first two brackets
(2+i)(3-i)
Multiply 2x3=6, then 2x I = 2i, then i x 3= 3i, then i x i= i2( i squared)
so it will be written as 6+2i+3i+i2( squared)
from here you can see that 2i and 3i can be added together to make 5i
so, 6+5i+i2(squared)
Then you bring in the third bracket from the question.
(6+5i+i2)(3+i)
6 x 3=18
6 x i= 6i
5i x 3=15i
5i x i=5i2(squared)
2x3=6
2x i= 2i
so you get 18+6i+15i+5i2(squared)+6+21
6i and 15i can be added together
18, 6 and 21 can be added together
so, 21i+5i2(squared)+45
V - 30 + v - 30 + 2v = 180(Triangles add up to 180)
4v - 60 = 180(Combined like terms, now add 60 to both sides)
4v = 240(Now divide by 4 on each side)
v = 60
Hope this helped!
Answer:
nothing is seen
Step-by-step explanation:
This is asking you how far around that specific portion of the circle did the needle travel. I'm guessing you're in geometry and you're doing circle stuff right now. This is the arc length. The formula is
which is a combination of the circumference of a circle and its central angle. Our situation will look like this:
If you leave your answer in terms of pi it would be
or if you multiply it in, then your answer will be 34.9