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andrezito [222]
3 years ago
5

What is the square root of -1?-iI-11​

Mathematics
2 answers:
vova2212 [387]3 years ago
7 0

Answer:

square root(-1) =  i

Step-by-step explanation:

ira [324]3 years ago
4 0

Answer:

-1

Step-by-step explanation:

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PLZ HELP IM BEING TIMED GIVING BRAINLIEST<br> Using the square root property solve (a - 10)² = 121
olchik [2.2K]

Answer:

21

Step-by-step explanation:

We know that the sqaure root of 121 = 11.

So, A - 10 = 11

=> A = 21

8 0
3 years ago
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Find the value of tan(sin^-1(1/2))
suter [353]

If you know that \sin\dfrac\pi3=\dfrac12, then you know right away

\tan\left(\sin^{-1}\dfrac12\right)=\tan\dfrac\pi3=\dfrac1{\sqrt}3=\dfrac{\sqrt3}3

###

Otherwise, you can derive the same result. Let \theta=\sin^{-1}\dfrac12, so that \sin\theta=\dfrac12. \sin^{-1} is bounded, so we know -\dfrac\pi2\le\theta\le\dfrac\pi2. For these values of \theta, we always have \cos\theta\ge0.

So, recalling the Pythagorean theorem, we find

\cos^2\theta+\sin^2\theta=1\implies\cos\theta=\sqrt{1-\sin^2\theta}=\sqrt{1-\left(\dfrac12\right)^2}=\dfrac{\sqrt3}2

Then

\tan\theta=\tan\left(\sin^{-1}\dfrac12\right)=\dfrac{\sin\theta}{\cos\theta}=\dfrac{\frac12}{\frac{\sqrt3}2}=\dfrac1{\sqrt3}=\dfrac{\sqrt3}3

as expected.

5 0
3 years ago
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Tell whether the table of values represents a linear function, an exponential function, or a quadratic funtion
gizmo_the_mogwai [7]

Answer:

Step-by-step explanation:

if it is linear then it will be a straight line(gradient is the same)

if quadratic then curve(gradeint isnt the same)

y=mx+c

m=[y(2)-y(1)]/[x(2)-x(1)]

you can choose any 2 points from the table

m=2-0.4/0-1

m=-1.6

repeat but 2 different coordinates

m=0.4-0.08/-1--2==>-2.24

m=-2.24

different coordinate therefore quadratic

cant be exponential, because nothing is being raised to some power

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1 year ago
Quadrilateral ABCD has vertices A(-3, 1) B(0,4) C(4,0) D(1, -3).
Rina8888 [55]
I think the correct answer is D 1,-3
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3 years ago
One pound of chicken cost $3. Jims buys 8 2/3 pounds. How much does he pay
seropon [69]
He will pay 26.1$ for 8 2/3 pounds of chicken.

Hope this helps!!

3 0
3 years ago
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