Answer:
.26%
Step-by-step explanation:
There are 52 cards in a deck and 13 of them are hears
P (1st card a heart) = 13/52 = 1/4
Then assuming we keep the card
There are now 51 cards with 12 of them hearts
P (2nd card a heart) = 12/51
Then assuming we keep the card
There are now 50 cards with 11 of them hearts
P (3rd card a heart) = 11/50
Then assuming we keep the card
There are now 49 cards with 10 of them hearts
P (4th card a heart) = 10/49
To get the probability the first 4 cards are hearts
P(1st 4 cards are hearts) = P (1st card a heart) * P (2nd card a heart) * P (3rd card a heart) *P (4th card a heart)
= 1/4 * 12/51 * 11/50 * 10/49
=11/4165
=.002641056
Changing to percent by multiplying by 100
=.26%
Answer: x²−9
Step-by-step explanation:
A square number is obtained ehen we multiply a number to itself.
For example: 5 × 5 = 5² = 25 [It is a square number]
We can do this in expression too, For example: z×z =z²
From all the given options, only x²−9 has both terms as square.
∵ x² = x × x
and 9 = 3×3= 3²
So that, x²−9 =(x)²-(3)²
Hence, the correct option is x²−9.
a = 46.2 b = 46.9
It says B is wrong but I don't know.
2 would be the answer because it's a prediction not an exact so you would predict that you would make 70 baskets out of 125
but if not a prediction it was be number 4 28 baskets in 50 throws
Answer: yes, they are congruent they are just rotated
Step-by-step explanation: