<h3>
Answer: 5 - 4i (choice A)</h3>
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Work Shown:
x = the other number
(5+4i)*x = 41
x = 41/(5+4i)
x = 41*(5-4i)/( (5+4i)*(5-4i) ) ..... see note below
x = 41*(5-4i)/( 41 )
x = (41/41)*(5-4i)
x = 5 - 4i
As a way to check, (5+4i)*(5-4i) = 5^2+4^2 = 25+16 = 41
The rule used is (a-bi)(a+bi) = a^2 + b^2
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Note: I multiplied top and bottom by (5-4i) to get rid of the imaginary term in the denominator.
Answer:
true
Step-by-step explanation:
Answer:
The slope would be -2 1/3 or -2.3 repeating
Step-by-step explanation:
The first point would be (-4, 9). The next point is (2, -5). We can tell that the slope will be negative, because the x values increased by 6, but the y values decreased by 4.
The slope would be -2 1/3 or -2.3 repeating
I Hope That This Helps! :)
Answer:
0.45
Step-by-step explanation:
Step 1:
Step 2:
8 · x = 0.3 · 12
8x = 3.6
Last Step: Divide both sides by 8 to isolate the value x
Answer:
A
Step-by-step explanation:
The correct divisor is 2. You change the sign of the real number without a variable when that real number is the divisor.
So - 2 becomes 2 and C and D are both incorrect.
The 0 comes between - 2 and 4 because the x term is 0x. (there isn't one).
That makes B wrong.
The answer is A
