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elena-14-01-66 [18.8K]
3 years ago
15

Can someone help me with this one question?

Mathematics
1 answer:
kondor19780726 [428]3 years ago
3 0

Answer:

no...

Step-by-step explanation:

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faust18 [17]

Hi! The answer would be all real numbers!

Hope this helps! :)

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3 years ago
Find the value of x<br> Please and thanks for the help
miv72 [106K]
28
you do 44-16 = 28
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2 years ago
Solve this and show your work or show me what website you used to solve please ​
Firdavs [7]
Since this is a piecewise function, we will want to find the right equation to use. We want to find f(2) so we will find the equation to use when x=2. This will be the third equation because it is -2<=x<=2. We then plug 2 into x^2 -2. This will give us (2^2)-2 = 4-2 = 2.
6 0
2 years ago
Read 2 more answers
NEED HELP ASAP<br><br> Question A.) k=5<br> Question B.) ????
andrezito [222]

Answer:

b) f^{-1}(x) = \frac{4x+5}{3}

Step-by-step explanation:

b) To find the inverse function, switch the x and y variables and solve for y:

f(x) = \frac{3x-5}{4}\\y = \frac{3x-5}{4}\\x = \frac{3y-5}{4}\\4x = 3y-5\\4x+5 = 3y\\\frac{4x+5}{3} = y\\f^{-1}(x) = \frac{4x+5}{3}

Verify Answer:

f(1) = \frac{3(1)-5}{4} = -0.5\\f^{-1}(-0.5) = \frac{4(-0.5)+5}{3} = 1

3 0
2 years ago
A sightseeing balloon is sighted simultaneously by two people on the ground, 7 miles apart from each other. both people are dire
svp [43]

Answer:

about 3.9886 miles, or 21,060 ft

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds us of the relationship between sides of a right triangle and the trig functions of the angles. If the balloon height is represented by h, and the distance from the spot below the balloon to the nearest observer is x, then we know ...

tan(59°) = h/x

and

tan(23°) = h/(x+7)

If we invert the ratios, we can express these a little differently:

cot(59°) = tan(31°) = x/h

cot(23°) = tan(67°) = (x+7)/h

We can multiply both equations by h and subtract the first product from the second.

h·tan(67°) -h·tan(31°) = (x+7) -(x)

h(tan(67°) -tan(31°)) = 7

h = 7/(tan(67°) -tan(31°)) ≈ 3.988623 . . . . miles

The height of the balloon is about 3.9886 miles.

_____

Comment on this geometry

The working of this problem assumes a flat earth. The altitude is such that oxygen would be required by the "sightseers".

8 0
4 years ago
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