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3 years ago

I WILL GIVE BRAINLIEST

Mathematics

1 answer:

sleet_krkn [62]3 years ago

4 0

Answer:

Step-by-step explanation:

A x approach positive infinity. f(x) approach positive infinity

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Two boys and three girls are auditioning to play the piano for a school production. Two students will be chosen, one as the pian

finlep [7]

Answer:

30% is the correct answer.

Step-by-step explanation:

Total number of boys = 2

Total number of girls = 3

Total number of students = 5

To find:

Probability that the pianist will be a boy and the alternate will be a girl?

Solution:

Here we have to make 2 choices.

1st choice has to be boy (pianist) and 2nd choice has to be girl (alternate).

$\bold{\text{Required probability }= P(\text{boy as pianist first}) \times P(\text{girl as alternate})}$

Formula for probability of an event E is given as:

$P(E) = \dfrac{\text{Number of favorable cases}}{\text {Total number of cases}}$

For $P(\text{boy as pianist})$ , number of favorable cases are 2 (total number of boys).

Total number of cases = Total number of students i.e. 5

So, $P(\text{boy as pianist})$ is:

$P(\text{boy as pianist}) = \dfrac{2}{5}$

For $P(\text{girl as alternate})$ , number of favorable cases are 3 (total number of girls).

Now, one boy is already chosen as pianist so Total number of cases = Total number of students left i.e. (5 - 1) = 4

$P(\text{girl as alternate}) = \dfrac{3}{4}$

So, the required probability is:

$\text{Required probability } = \dfrac{2}{5}\times \dfrac{3}{4} = \dfrac{3}{10} = \bold{30\%}$

6 0

3 years ago

^3square root of 3x+2=-1

ANEK [815]

Cube root of 3x+2=-1
x=-1

the square root of 3x+2=-1
can not be defined

if this isn't what its wanting then let me know.

5 0

3 years ago

6(5m - 4) <br> A. 30m - 4<br> B. 30m - 24<br> C. 30m + 24<br> D. 54m

mixas84 [53]

Answer:

6(5m-4)

=30m -24

option B

6 0

3 years ago

Please help me with these transformations

bekas [8.4K]

6. Rotate 180 degrees from origin and shift 5 units down.

7. Scale 2x at origin and reflect across the Y axis. The sizes are different so it’s similar

5 0

3 years ago

If PR=40, what are PQ and QR?

RUDIKE [14]

Answer:

Step-by-step explanation:

I did it in my head but pretty much just add the 5x-2 and x+ 12 then set it equal to 40. u get x = 5. plug x back in and you get 23 and 17

8 0

3 years ago

Read 2 more answers