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GrogVix [38]
2 years ago
11

HELPPPP PLEASEEEE will give brainliest ​

Mathematics
1 answer:
ycow [4]2 years ago
8 0

Answer:

I think it's the 3rd or fourth one. I'm not positive tho

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Which is not a solution of sin 20 = 1?<br> A = 90<br> B = 45<br> C = 225<br> D = - 135
koban [17]
If you plug in 90 into theta, the expression becomes sin(180), which has a value of zero. Therefore 90 cannot be a solution to this equation. Hope this helps.
6 0
1 year ago
For what positive values of k does the function y=sin(kt) satisfy the differential equation y''+144y=0 ?
lina2011 [118]

Answer:

The positive value of k that the function y = sin(kt) satisfies the differential equation y'' + 144y = 0 is +12

Step-by-step explanation:

To determine the positive values of k that the function y = sin(kt) satisfy the differential equation y''+144y=0.

First, we will determine y''.

From y = sin(kt)

y' = \frac{d}{dt}(y)

y' = \frac{d}{dt}(sin(kt))\\

y' = kcos(kt)

Now for y''

y'' = \frac{d}{dt}(y')

y'' = \frac{d}{dt}(kcos(kt))

y'' = -k^{2}sin(kt)

Hence, the equation y'' + 144y = becomes

-k^{2}sin(kt) + 144(sin(kt)) = 0

(144 - k^{2})(sin(kt)) = 0

(144 - k^{2})= 0

∴ k^{2} = 144\\

k = ±\sqrt{144}\\

k = ± 12

∴ k = +12 or -12

Hence, the positive value of k that the function y = sin(kt) satisfies the differential equation y'' + 144y = 0 is +12

7 0
3 years ago
HELP HELPPPP PLEASEE
maks197457 [2]

Answer:

f(n)=o.15n. is you answer

5 0
3 years ago
Read 2 more answers
There are 32 fishes in a tank. 25% of them are gold fish. How many of yhem are gold fish? Write and solve a proportion.
Sveta_85 [38]
25%of 32 should be written as 32•25%.then you convert 25%to a decimal wich is 25/100=0.25,last you multiply 32• .25=8 . 8 of them aregoldfish
5 0
2 years ago
What’s the correct answer answer asap
barxatty [35]

Answer:

I believe the answer is B, it makes the most sense

Step-by-step explanation:

3 0
1 year ago
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