Answer:
1+14i
Step-by-step explanation:
- remove unnecessary parentheses (-3 + 8i) -(-4 - 6i) = -3+8i - (-4-6i)
- when there is a - in front of an expression in parentheses, change the sign of each term in the expression -3+8i+4+6i
- calculate the sum
(-3+4=1) = 1+8i+6i
- collect like terms
(8i+6i=14i) = 1+14i
SOLUTION: 1+14i
Answer:
For your area models you would draw two rectangles and divide one into 2 equal sections, and the other one with 8 equal sections. You then shade 1 box out of the first triangle with 2 equal sides. Then you would shade 7 boxes on the rectangle with 8 equal sides. These diagrams would show you that 7/8 and 1/2 are not equivalent.
To find out what fractions are equivalent to 1/2 you would take 1/2 and times the numerator and denominator by the same number.
1/2*2/2= 2/4
2/4=1/2
1/2*9/9= 9/18
9/18=1/2
2/4 and 9/18 both equal 1/2
Hope this helps ;)
Find their gradients using the change in y coords divided by the change in x coords. once you have the gradients (or slopes), multiply them by eachother - if the product is (-1) then theyre perpdendicular, if not, they are either parallel or intersect at a point
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