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3 years ago

Find the solution of y = 5x – 4 for x = –6.

1 answer:

4 0

The answer is (-6,-34)
Because since x = -6 u substituted so the equation will be y= 5(-6)-4 so y=-34 making the answer (-6,-34)

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A box contains 100 balls, of which r are red. Suppose that the balls are drawn from the box one at a time, at random without rep

Eddi Din [679]

Answer:

(a) $\frac{r}{100}$

(b) $\frac{r}{100}$

Step-by-step explanation:

Given,

The total number of balls = 100,

Red balls = r

So, the remaining balls = 100 - r,

(a) ∵ The probability that first ball drawn will be red

$=\frac{\text{Red balls}}{\text{Total balls}}$

$=\frac{r}{100}$

(b) Also, the probability of a ball other than red ball = $1-\frac{r}{100}$

$=\frac{100-r}{100}$

So, the probability of getting red ball in second thrawn( one is red second is red or one is not red second is red ),

$=\frac{r}{100}\times \frac{r-1}{99}+\frac{100-r}{100}\times \frac{r}{99}$

$=\frac{r}{99}[\frac{r-1}{100}+\frac{100-r}{100}]$

$=\frac{r}{99}[\frac{r-1+100-r}{100}]$

$=\frac{r}{99}[\frac{99}{100}]$

$=\frac{r}{100}$

Now, the the probability of getting red ball in third thrawn,

$=\frac{r}{100}\times \frac{r-1}{99}\times \frac{r-2}{98}+\frac{100-r}{100}\times \frac{r}{99}\times \frac{r-1}{98}+\frac{100-r}{100}\times \frac{99-r}{99}\times \frac{r}{98}$

$=\frac{r}{100}$

......so on,...

This pattern will be followed in every trials,

Hence, the probability that the 50th ball drawn will be red = $\frac{r}{100}$

(c) Similarly, the probability that the last ball drawn will be red = $\frac{r}{100}$

3 0

3 years ago

Enrollment in a dance studio has grown exponentially since the studio opened. Below is a graph depicting this growth. Determine

stiv31 [10]

Answer:

0.08

Step-by-step explanation:

because i'm smart

7 0

3 years ago

Read 2 more answers

Plz help me show work four points correctly evaluate the function for the given value showing all work HELP PLZ

tankabanditka [31]

f(4)=36

Step-by-step explanation:

f(x)=x^2+5x

f(4)=??

you need to put the number 4 instead of x in the equation.

f(4)=(4)^2+(5×4)

f(4)=16+20

f(4)=36

3 0

3 years ago

What is 30 divided by 15

tatuchka [14]

30 divided by 15 is 2.
Think of it as how many 15's can go into 30? Two 15's can go into 30, so your answer is 2.

7 0

3 years ago

Read 2 more answers

an airplane completed 900 miles of a 1200-mile flight. What percent of the trip remains to be completed?

blagie [28]

The percent is 1.3%

you have to divide

1,2000/900

and you will get 1.3

then go back and check your answer by multiplying 1.3 by 900

7 0

3 years ago