3 years ago

If 1 card is drawn at random from a standard 52-card deck, what is the probability that the card drawn is a black nine?

Mathematics

1 answer:

Korolek [52]3 years ago

5 0

I think it's 2/52 or 1/26

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bija089 [108]

28+x=
200

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3 years ago

The profit when selling 'x' pairs of shoes is P(x)=-4x^2+32x-39. How many pairs of shoes should be sold in order to maximize the

Vitek1552 [10]

Answer: $4$ pairs

Step-by-step explanation:

Given

Profit on selling 'x' pairs of shoes is $P(x)=-4x^2+32x-39$

Find the derivative of the function to find out the critical points

$\Rightarrow -8x+32=0\\\Rightarrow x=4$

Thus, for 4 pair of shoes profit is maximize.

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3 years ago

Which angle corresponds to <7?<br> A. <1<br> B. <3<br> C. <4<br> D. <6

DiKsa [7]

B.

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3 years ago

Type the correct answer in each box. If necessary, use / for the fraction bar. A bag contains 5 blue marbles, 2 black marbles, a

konstantin123 [22]

Answer:

Step-by-step explanation:

Problem One

Blue = 5

Black =2

Red = 3

First of all there are 10 marbles, 2 of which are black.

That means that 8 others are not black

You can draw any one of the 8.

P(not black) = 8/10 = 4/5

Problem Two

There are 10 marbles in all

3 of them are red.

P(Red) = 3/10

7 0

3 years ago

If it takes 13 cup of flour to make 14 of a cake, how many cups of flour are needed to make a whole cake? i need help plz

aleksandrvk [35]

Answer:

1-1/3 if its 14

1/52 if its 1/4

Step-by-step explanation:

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3 years ago