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3 years ago

I dont understand B and C in this question so there are a deck of cards 1-10 i already got A right but B and C i dont understand

Mathematics

1 answer:

r-ruslan [8.4K]3 years ago

7 0

Answer:

see below

Step-by-step explanation:

1 2 3 4 5 6 7 8 9 10 = 10 cards

9 of them have 1 digit on them ( 10 has 2 digits)

P( 1 digit) = number with 1 digit) / total = 9/10

P( not have 1 digit)= number not with 1 digit) / total = 1/10

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If all the sides of a prism are multiplied by 5, by what factor does the volume increase?

NISA [10]

I'd say increasing each side by 5 increases the volume by a factor of 125 because 5*5*5 = 125.

Example:
A 4*5*6 prism has a volume of 120

Increasing each side by a factor of five
(20*25*30) = 15,000

15,000 / 120 = 125

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3 years ago

An equation of a circle is given as (x + 6)2 + (y − 7)2 = 81. Find the center and radius of the circle.

choli [55]

The equation of a circle is written as (x – h)^2 + (y – k)^2 = r^2

h and k are the center point and r is the radius.

In the given equation h = -6 and k = 7 and r would be the square root of 81, which is 9.

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3 years ago

TV studio has brought in 9 boy kittens and 6 girl kittens for a cat food commercial. The director is going to choose 9 of these

Amanda [17]

Answer:

probability = 0.2517

Step-by-step explanation:

given data

boy kittens = 9

girl kittens = 6

choose kittens at random = 9

solution

total kitten are = 9 + 6 = 15

first we get here total no of probability that is

n(s) = 15 C 9

n(s) = $\frac{15!}{9!(15-9)!}$

n(s) =5005

and

total way to chose 5 boy kittens is = 9 C 3

n(3) = $\frac{9!}{3!(9-3)!}$

n(3) = 84

and

total way to chose 4 girl kittens is = 6 C 4

n(4) = $\frac{6!}{4!(6-4)!}$

n(4) = 15

total way to chose 5 boy kittens and 4 girl kittens is

total way = 84 ×15 = 1260

so probability that the director chooses 5 boy kittens and 4 girl kittens is

probability = $\frac{1260}{5005}$

probability = 0.2517

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4 years ago

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Alexxandr [17]

Graph C represents x = -2

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3 years ago

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Answer:

Step-by-step explanation:

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4 years ago