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Reil [10]
3 years ago
13

You pick a card at random. Without putting the first card back, you pick a second card at

Mathematics
1 answer:
malfutka [58]3 years ago
7 0

Answer:

1/6

Step-by-step explanation:

Firstly, Pr(e) = n(e)/Total outcome

Pr(2) = 1/3

Pr(1) = 1/2

Pr(1 and 2) = 1/3 * 1/2 = 1/6

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Pls help... Prove (1+tanx)/(1+cotx)=tanx by algebra
katen-ka-za [31]

\text{L.H.S}\\\\=\dfrac{1+\tan x}{ 1+ \cot x}\\\\\\=\dfrac{1+ \tan x}{ 1+ \tfrac 1{\tan x}}\\\\\\=\dfrac{1+\tan x}{\tfrac{\tan x+1}{\tan x}}\\\\\\=(1+\tan x) \times \dfrac{\tan x}{1+ \tan x}\\\\=\tan x\\\\=\text{R.H.S}\\\\\text{Proved.}

6 0
2 years ago
Find the number of palindromes between 10,000 and 99,999 that are divisible by 25
Cerrena [4.2K]

<u><em>20</em> palindromes exist that qualify this criteria rigorously</u>

Examples:

52025, 52125, 52225, 52325, 52425, 52525, 52625, 52725, 52825, 57975 etc.

3 0
2 years ago
In a candy box, there are 5 times as many candies with nuts as candies without nuts. There are 30 candies in the box. How many c
Luden [163]

Answer:

90

Step-by-step explanation:

because there are 5 time as many candies with nuts as candies without nuts and there is 18 so it will be 18×5=90

6 0
3 years ago
Solve the equation -4 + 4a = 12 for a.
WARRIOR [948]

Hello there! The answer to your question is a = 4.

To solve for a in the equation -4 + 4a = 12 you want to isolate, or separate, a from all of the equation's other values.

Our first step is to add 4 to both sides so the 4 cancels out on the left side.

-4+4 + 4a = 12+4

4a = 16

Next, we divide both sides by 4 to finish isolating a.

4/4a = 16/4

a = 4

Want to verify that this is correct? Place the value we found for a (4) into the equation in place of a and if it comes out as a true statement, the answer is correct.

-4 + 4(4) = 12

-4 + 16 = 12

12 = 12

Since 12 is in fact equal to 12, i can guarantee you that i have provided you with the correct answer. I hope this helps & have a great rest of your day! :)

6 0
3 years ago
Read 2 more answers
5(2z-2)=9(z+2) how to solve it
IceJOKER [234]

Answer:

z=28

Step-by-step explanation:

10z-10=9z+18

-9z        -9z

z-10=18

+10   +10

z=28

7 0
3 years ago
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