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devlian [24]
3 years ago
8

Two cards are drawn without replacement from a standard deck of cards. What is the probability that the second one is a black ca

rd given that the first one is a spade.
Mathematics
1 answer:
forsale [732]3 years ago
4 0

Answer:

The probability is 169/2652

Step-by-step explanation:

The number of cards in a deck of cards is 52

In each deck of cards, there are 13 black cards and 13 spade cards

The probability of selecting a spade card will be;

13/52 = 1/4

Without replacement, we are left with 51 cards and the probability of selecting a black card will now be 13/51

So the probability of the second card being a black card if the first is spade will be ;

13/52 * 13/51

= 169/2,652

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Which one is the least?<br> 1/8, 1.125, or 2/5?<br> Then after which one is bigger?
finlep [7]

Answer:

1/8 is smaller than 2/5, and 2/5 is smaller than 1.125

Step-by-step explanation:

this is because 1/8 = 5/40 and 2/5 = 16/40

3 0
2 years ago
Read 2 more answers
I got 7 but I’m confused
Alja [10]

Answer:

27

Step-by-step explanation:

3v+6=5v-8

3v+14=5v

14=2v

v=7

3*7+6

21+6

27

u were right on 7 u just need to plug it into the equation

5 0
3 years ago
If c-d=7 and c=3-8i what is d<br> a) -4+8i<br> b)-4-8i<br> c)4+8i<br> d)4-8i
Zigmanuir [339]

Answer:

Step-by-step explanation:

c - d = 7

c = 3 - 8i            Substitute into the top equation

3 - 8i - d = 7      Subtract 3 from both sides

- 8i - d = 7 - 3    Combine

-8i - d =4            Add 8i to both sides

-d = 4 + 8i           Multiply through by -1

-1*-d = -4 - 8i

d = - 4 - 8i

Looks like B is the answer.

6 0
3 years ago
What is the factored form of this expression?<br><br> 216p^6+1
VLD [36.1K]

Answer:

First, 6 + 1 is 7, so 216p^7 is 219,369p

Step-by-step explanation:

7 0
3 years ago
Triangle abc is similar to xyz. which proportion can be used to find the unknown side length
Alex17521 [72]

Unknown side length of two similar triangles can be found out by scale factor and any of the side lengths.

Step-by-step explanation:

The similarity is one of the criteria of triangles. Two triangles are similar when their respective sides are in similar ratio or proportion. In layman’s term, it can be understood as a condition in which two triangles have similar shapes but not similar sizes.

If ΔABC is similar toΔ XYZ, then their respective sides would be in proportion to each other.

This means AB/XY=AC/XZ=BC/YZ

This common ratio is often termed as “scale factor”

Hence any sides length can be found out if either of the terms (i.e. scale factor, side ) is given.

7 0
3 years ago
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