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RSB [31]
3 years ago
15

For which value of 0 is 0=-1 ?

Mathematics
1 answer:
bagirrra123 [75]3 years ago
4 0

Answer:

theta =  \frac{3}{2} \pi + 2k\pi

Step-by-step explanation:

+2*k*pi is for the periodicity (if you turn 360° you get back to the same point)

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What is the probability of selecting a red card from a standard deck of 52 playing cardships that does not contain a joker?
Rasek [7]
We know that the deck of cards contain half red and half black cards or you can say we have 26 red cards and 26 black cards.
we have to find probability of red cards from a deck of cards
so,
probability (selecting red card) = \frac{26}{52}
                                                     = \frac{1}{2}

Probability ( selecting red card ) =  <span>\frac{1}{2} Answer</span>
4 0
3 years ago
Read 2 more answers
n automobile manufacturer claims that its van has a 37.4 miles/gallon (MPG) rating. An independent testing firm has been contrac
JulsSmile [24]

Answer:

Then z(s) is out of the acceptance region, we reject H₀,  doubts of the independent testing firm are valids

Step-by-step explanation:

We will develop a Hypothesis Test ( a 2 tail test since the independent testing firm is interested in finding out  if there is an incorrect MPG rating from the manufacturer

Test Hypothesis :

Null hypothesis                             H₀            μ    =    μ₀

Alternative Hypothesis                Hₐ             μ    ≠    μ₀

Significance Level   α  = 0,05    α/2  =  0,025

z(c) for α/2   from z-table      z(c)  = - 1, 96   and by symmetry  z(c) = 1,96

Calculating  z(s)

z(s) =  ( μ  -  μ₀ ) / σ /√n

z(s) = ( 37,8 - 37,4 ) / 2,3 /√280

z(s) = 0,4 * 16,73 / 2,3

z(s) = 2,90

Comparison between z(c)  and  z(s)

z(s) > z(c)       2,90 > 1,96

Then z(s) is out of the acceptance region, we reject H₀,  doubts of the independent testing firm are valids

8 0
2 years ago
3 times the sum of y and 9 <br><br> in algebraic expression please help me out!!
Ray Of Light [21]

3(y+9)

plz plz mark brainliest if it helps

3 0
3 years ago
Nita bought some games for her grandchildren for $42.50 each. If she
amid [387]

Answer:

8

Step-by-step explanation:

Hope it helps

:D

Can i have brainly pls

6 0
3 years ago
Read 2 more answers
Jillian ran 40 miles in one week. Her friend Lacy ran 5/8 the distance that Jillian ran . How many miles did Lacy run ?
Korvikt [17]
Lacy ran 25 miles.

40/8=5  5*5=25
5 0
3 years ago
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