Ask question

Ask question

All categories

4 years ago

10

Identifying roots - Pre calculus stuff

1 answer:

umka2103 [35]4 years ago

4 0

The answers are 0 and 2

This can be found by looking at the x axis and finding every point where the line crosses

You might be interested in

Six cards numbered from 1 to 6 are placed in an empty bowl. First one card is drawn and then put back into the bowl; then a seco

kari74 [83]

Answer:

C. $\frac{1}{18}$

Step-by-step explanation:

Given: Six cards numbered from $1$ to $6$ are placed in an empty bowl. First one card is drawn and then put back into the bowl then a second card is drawn.

To Find: If the cards are drawn at random and if the sum of the numbers on the cards is $8$ , what is the probability that one of the two cards drawn is numbered $5$ .

Solution:

Sample space for sum of cards when two cards are drawn at random is $\{(1,1),(1,2),(1,3)......(6,6)\}$

total number of possible cases $=36$

Sample space when sum of cards is $8$ is $\{(3,5),(5,3),(6,2),(2,6),(4,4)\}$

Total number of possible cases $=5$

Sample space when one of the cards is $5$ is $\{(5,3),(3,5)\}$

Total number of possible cases $=2$

Let A be the event that sum of cards is $8$

$p(\text{A})$ $=\frac{\text{total cases when sum of cards is 8}}{\text{all possible cases}}$

$p(\text{A})=\frac{5}{36}$

Let B be the event when one of the two cards is $5$

probability than one of two cards is $5$ when sum of cards is $8$

$p(\frac{\text{B}}{\text{A}})=\frac{\text{total case when one of the number is 5}}{\text{total case when sum is 8}}$

$p(\frac{\text{B}}{\text{A}})=\frac{2}{5}$

Now,

probability that sum of cards $8$ is and one of cards is $5$

$p(\text{A and B}=p(\text{A})\times p(\frac{\text{B}}{\text{A}})$

$p(\text{A and B})=\frac{5}{36}\times\frac{2}{5}$

$p(\text{A and B})=\frac{1}{18}$

if sum of cards is $8$ then probability that one of the cards is $8$ is $\frac{1}{18}$ , option C is correct.

3 0

3 years ago

Expand and simplify (2x^2)(4x+5)-8x(x^2-2)

Olegator [25]

The answer would be 10x^2 + 16x

good luck on whatever it is you’re doing ^^

5 0

3 years ago

-8(s+4) = -60<br><br> What is the value of s?

lukranit [14]

Answer:

SJsidsdbhsd

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

How would I do this please help me?

labwork [276]

Perimeter is 102 Area is 496 and the tank one is it has 12. Liters right now

6 0

3 years ago

Read 2 more answers

Hadley’s softball team has a phone tree in case a game is canceled. The coach calls 3 players. Then each of those players calls

Setler [38]

1 2 3
1 2 3 1 2 3 1 2 3
123 123 123 123 123 123 123 123 123
3 3 3 3 3 3 3 3 3
3(9)
27

5 0

3 years ago