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KiRa [710]
4 years ago
14

Questions 16 and 17 please (18 if you could ;p)

Mathematics
1 answer:
andrew-mc [135]4 years ago
5 0
16.  (x-5)(x+4) =  x^2-x-20
17.  2x>7  = x=3.5
18. -4
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48 is your answer:):);)
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Abbie decides to start doing crunches as part of her daily workout. She decides to do 15 crunches the first day and then increas
Pavlova-9 [17]
For this case, the first thing we must do is define a variable.
 We have then:
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3 years ago
What is "tangent theta equals 0.255"
Ad libitum [116K]

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Step-by-step explanation:

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3 years ago
6x+2+4x<14 what are the steps?
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6 0
4 years ago
In this problem, x = c1 cos t + c2 sin t is a two-parameter family of solutions of the second-order de x'' + x = 0. find a solut
nordsb [41]

If you are already given the general solution, finding the particular solution means to impose some conditions in order to fix the coefficients of the general solution.

The first thing we need to impose is that the function must output -1 when the input is zero. So, if we plug zero as input we have

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So, we fixed the first coefficient. To fix the second one, we can use the second piece of information (and of course the already-found value for c_1).

We want the first derivative to output 3 when the input is zero. So, first of all, let's compute the first derivative, and evaluate it in zero:

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x'(0) = \sin(0) + c_2\cos(0) = c_2

And as before, since x'(0)=c_2 and we want x'(0)=3, we deduce c_2=3.

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3 0
3 years ago
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