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Mariana [72]
3 years ago
10

Find the length of B to the nearest tenth using the Pythagorean theorem.​

Mathematics
1 answer:
fgiga [73]3 years ago
4 0
The answer is 11.2

The Pythagorean Theorem says
a^2+b^2=c^2

From the picture, we know one side, and the hypotenuse.

10^2+b^2=15^2
100+b^2=225
b^2=225
Sqrtb^2=sqrt225
b=11.18

Rounded to the nearest tenth it is 11.2
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For the function y=-1+6 cos(2pi/7(x-5)) what is the minimum value?
Ad libitum [116K]
Usually one will differentiate the function to find the minimum/maximum point, but in this case differentiating yields:
\frac{2\pi}{7(x-5)^{2}}\sin{\frac{2\pi}{7(x-5)}}}
which contains multiple solution if one tries to solve for x when the differentiated form is 0.

I would, though, venture a guess that the minimum value would be (approaching) 5, since the function would be undefined in the vicinity.

If, however, the function is
-1+\cos{\frac{2\pi}{7}(x-5)}}
Then differentiating and equating to 0 yields:
\sin{\frac{2\pi}{7}(x-5)}}=0
which gives:
x=5 or 8.5

We reject x=5 as it is when it ix the maximum and thus,
x=8.5\pm7n, for n=0,\pm 1,\pm 2, ...
3 0
3 years ago
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I WILL GIVE BRAINLIEST, PLZ HELP!<br><br> given g(x) = - x-4, solve for x when g(x) =-4
yaroslaw [1]

Answer:

g(-4) = 0

Step-by-step explanation:

g(-4) = -(-4)-4

g(-4) = 0

5 0
3 years ago
HI! I really need help (no links!) ignore my answer.
LuckyWell [14K]
The answer would be A
7 0
3 years ago
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Someone please help asap
mrs_skeptik [129]

Answer:

(r/s)(6) = r(6)/s(6) = 3(6)-1 / 2(6)+1 = 18-1 / 12+1 = 17/3

So basically the first one is the correct answer.

Step-by-step explanation:

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1. When two lines cross, the opposite angles are ___________ angles and are congruent. *
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1. vertical angles

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3. Supplementary angles

Step-by-step explanation:

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