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Aneli [31]
3 years ago
13

PLEASE HELP MEEEEE

Mathematics
1 answer:
Elena-2011 [213]3 years ago
5 0

Answer:

a = 36 and a = 27

Step-by-step explanation:

The geometric mean of two numbers is the square root of the product of the two numbers.

Say for example we have the numbers x and y, the geometric mean z is mathematically;

z = √xy

For the first question, our z is 12, x and y are 4 and a respectively.

12 = √4a

square both sides

144 = 4a

a = 144/4

a = 36

For the second question

z is 9, x and y are 3 and a respectively

9 = √3a

square both sides

81 = 3a

a = 81/3

a = 27

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klemol [59]

Answer:

The conclusion about p using an absolute value inequality is  

   0.325  <  p <  0.375

Step-by-step explanation:

From the question we are told that

   The  sample proportion is  \r p =  0.35

    The  margin of error is  E =  0.025

The confidence interval is mathematically represented as

           \r p  -E  <  p <  \r p +E

=>        0.35 - 0.025 <  p <  0.35 + 0.025

=>      0.325  <  p <  0.375

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3 years ago
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The sum of the numbers as the product of their GCF and other sum so what is 32 plus 20???
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3 years ago
It takes Kevin 15 minutes to drive 52 miles.
Kaylis [27]

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Step-by-step explanation:

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3 years ago
A card is picked from a standard deck of 52 cards. Determine the odds against and the odds in favor of selecting a red face card
timama [110]
<h3>The probability of picking a red face card from the deck  is (\frac{3}{26} )</h3><h3>The probability of NOT picking a red face card from the deck  is (\frac{23}{26} )</h3>

Step-by-step explanation:

The total number of cards in the deck  = 52

The total number of red( Diamond + Hearts)  face cards in the given deck

= 2 Red Queens +  2 Red jacks + 2 Red kings  = 6 cards

Let E : Event of picking a red face card from the deck

Now , P( any event)  = \frac{\textrm{The number of favorable observations}}{\textrm{Total number of observations}}

So, here P(Picking a red face card)  = \frac{\textrm{The number of red face cards}}{\textrm{Total number of cards}} =  (\frac{6}{52} ) = (\frac{3}{26})

Hence, the probability of picking a red face card from the deck  is (\frac{3}{26} )

Now, as we know P (any event NOT A)  = 1 - P(any event A)

So, P(NOT Picking a red face card) = 1 - P(Picking a red face card)

= 1 - (\frac{3}{26} ) = \frac{26-3}{26}  = (\frac{23}{26})

Hence,  the probability of NOT picking a red face card from the deck  is (\frac{23}{26} )

8 0
3 years ago
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