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3 years ago

The circle below is centered at the origin and has a radius of 4. What is its

Mathematics

2 answers:

BlackZzzverrR [31]3 years ago

8 0

Answer:

Step-by-step explanation:

The standard form of a circle's equation is

$(x-h)^2+(y-k)^2=r^2$ where h and k are the circle's center and r is the radius. We are told, and we can see, that the center of the circle is (0, 0) so h = 0 and k = 0. The radius, given as 4, goes into the equation squared, so the equation is

$(x-0)^2+(y-0)^2=16$ which simplifies down to

$x^2+y^2=16$ , choice C.

Jet001 [13]3 years ago

5 0

Answer is: x2+y2=16!!!

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If m(x) =x+5/x-1 and n(x) =x-3 which function has the same domain as (m.n)(x)

Travka [436]

Answer:

Step-by-step explanation:

m (x) = (x+ 5) / (x -1) and n(x) = x - 3.

$m(x) = \dfrac{x+5}{x-1}$

Hence

$m(n) = \dfrac{n+5}{n-1}$

but n is a function and n = x-3. Now, replace value of n on m (n)

$(m(n))= \dfrac{(x-3)+5}{(x-3)-1}$

simplify it

$(m\bullet n)(x) =\dfrac{x+2}{x-4}\\$

since (m . n) (x) is a fraction function, its domain will be all x such that the denominator is NOT 0. That is

$x-4\ne 0\rightarrow x\ne 4$

among options, only C has the same denominator with $(m\bullet n)(x)$

Hence their domains are the same.

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3 years ago

A basketball player guesses her team will score 57 points during the game. The player's team actually scores 63 points. What is

Sergeeva-Olga [200]

I might be wrong, but i believe the answer is 9.5

6 0

3 years ago

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Elizabeth is going to roll a fair 6-sided die 600 times. Complete the following statement with the best prediction. Elizabeth wi

SCORPION-xisa [38]

Answer:

Close to 300 but not exaclty 300.

Step-by-step explanation:

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3 years ago

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What is 69.37 minus 1.93

Jlenok [28]

Answer:

the answer is 67.44 hope it helps smile

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3 years ago

When a certain drug is taken orally, the concentration of the drug in the patient's bloodstream after t minutes is given by

sineoko [7]

The time when the maximum serum concentration is reached is obtained by equating the derivative of C(t) to 0.
i.e. dC(t)/dt = 0.06 - 2(0.0002t) = 0.06 - 0.0004t = 0
0.0004t = 0.06
t = 0.06/0.0004 = 150
Therefore, the maximum serum concentration is reached at t = 150 mins

The maximum concentration = 0.06(150) - 0.0002(150)^2 = 9 - 0.0002(22,500) = 9 - 4.5 = 4.5
Therefore, the maximum concentration is 4.5mg/L

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3 years ago