(12-6i)-(-3-8i). First you have to combine like terms, to do that remove the parenthesis: 12-6i-3+8i (because there is a - in front of the second parentheses the signs inside change). Now combine like terms: 9+2i. So your answer is 9+2i :)
Answer:
73, 74, 75
Step-by-step explanation:
So the sum of three consecutive integers is 222.
Let's let the first integer be n.
Then the second integer <em>must</em> be (n+1).
And the third integer must be (n+2).
They total 222, thus:
Combine like terms:
Subtract 3 from both sides:
Divide both sides by 3:
So, the first integer is 73.
So our sequence is 73, 74, and 75.
And we're done!
Answer:
10.8; 10.8; 33.912
Step-by-step explanation:
Diameter = 2 × 5.4
10.8 cm
Circumference = pi × d
10.8pi cm
10.8 × 3.14
33.912
Answer:
ratio: 3 vowels; 2 consonants
media: 3 vowels; 2 consonants
letter: 2 e's; 1 r
electric: 2 e's; 1 r
For number 7:
a) The sum of the adjacent angles is 180. Because if its any three angles thats half of the angles all together 3/6 = 180/360.
b) The sum of the angles in the center is 360 degrees. Because 60 x 6 = 360.
c) The unknown angles (center angles) are 61.25 degrees.
For number 8 (bonus):
It's C) 90 Degrees, because it's a right angle.
Hope this helps :)
