Solve for u.u- 4.49 = 8.4
1 answer:
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Use Pythagorean theorem:
9i-j = sqrt (9^2 - 1^2) = sqrt(81-1) = sqrt80
now divide both terms in V by that:
u = 9/sqrt(80)i - 1/sqrt(80)j
see attached picture:
9i-j = sqrt (9^2 - 1^2) = sqrt(81-1) = sqrt80
now divide both terms in V by that:
u = 9/sqrt(80)i - 1/sqrt(80)j
see attached picture:
Answer:
$192.4
Step-by-step explanation:
First, we'll work out what the customer had to pay before tax.
That's
(USD)
4% of 185 is 7.4,
So the customer paid
(USD)