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3 years ago

A.118 B.242 C.180 D.149

Mathematics

1 answer:

Scrat [10]3 years ago

5 0

Answer:

Step-by-step explanation: First find angle 2. 180-59= 121 angle 1 and 2 are equal so their sum must be

242

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E^-2n=45 How to solve this exponential equation?

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A plane left 30 minutes late than its schedule time and in order to reach the destination 1500 km away in time it had to increas

schepotkina [342]

Let x= the usual speed
1500/x would equal how long it usually took the plane to read the destination
1500/(x+100) would equal how long it would take the plane now
So $\frac{1500}{x} - \frac{1500}{x+100} = \frac{1}{2}$ because it would lose 30 minutes already
Simplify:
$\frac{1500(x+100)-1500x}{x(x+100)} = \frac{1}{2}$
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Read 2 more answers

How do I find the Derivative of a Function where the x is a number?

lisov135 [29]

Given a function g(x), its derivative, if it exists, is equal to the limit

$g'(x) = \displaystyle\lim_{h\to0}\frac{g(x+h)-g(x)}h$

The limit is some expression that is itself a function of x. Then the derivative of g(x) at x = 1 is obtained by just plugging x = 1. In other words, find g'(x) - and this can be done with or without taking a limit - then evaluate g' (1).

Alternatively, you can directly find the derivative at a point by computing the limit

$g'(1) = \displaystyle\lim_{h\to0}\frac{g(1+h)-g(1)}h$

But this is essentially the same as the first method, we're just replacing x with 1.

Yet another way is to compute the limit

$g'(1) = \displaystyle\lim_{x\to1}\frac{g(x)-g(1)}{x-1}$

but this is really the same limit with h = x - 1.

You do not compute g (1) first, because as you say, that's just a constant, so its derivative is zero. But you're not concerned with the derivative of some number, you care about the derivative of a function that depends on a variable.

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