3 years ago

Evaluate: UV 2 if u=4 and v=3

Mathematics

1 answer:

ryzh [129]3 years ago

3 0

The answer would be 1 1/2 (one and one half)

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Answer:

A, Harry has $27 more.

Step-by-step explanation:

I could be wrong but.

1) debit cards are of your money, if you have $14 in your account it means you have $14 that you can spend without owing anything.

2) credit cards allow you to borrow money with the expectation that you pay it back. So if you have $13 of credit, you owe $13 which I guess could be seen as -$13.

3) the distance between -13 and 14 is 27.

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3 years ago

4tantheta/12-tan^2=1

egoroff_w [7]

$4tan \theta = 12 - tan^{2} \theta$
$tan^{2} \theta + 4tan \theta - 12 = 0$

Let $x = tan \theta$
$x^{2} + 4x - 12 = 0$
$(x + 6)(x - 2) = 0$
$x = -6, x = 2$

$tan \theta = -6, tan \theta = 2$

Since they both work, then we can write the solutions in general form:
$\theta = n \pi + tan^{-1}(2)$ , $n \in Z$
$\theta = n \pi - tan^{-1}(6)$ , $n \in Z$

Now, these solutions will always satisfy the equation and substituting a whole number in place of n will produce a solution that satisfies the given equation.

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