10 + 20 = 30 total balls.
Picking red = 10/30 = 1/3
After picking one ball there are 29 balls left.
Picking a yellow next is 20/29
Then there are 28 balls left and 19 yellow left, so picking another yellow would be 19/28
The probability of picking red first then two yellow = 1/3 x 20/29 x 19/28 = 95/609
Answer:
(30)(37)(-6⁷)(38⁸)
Step-by-step explanation:
(36⁴−6⁹)(38⁹−38⁸)
(36⁴ - 6⁹) = (6²)⁴ - 6⁹
= 6⁸ - 6⁹
= 6⁷(6 - 6²)
= 6⁷(6 - 36)
= 6⁷(-30)
(38⁹ - 38⁸)
= 38⁸(38 - 1)
= 38⁸(37)
36⁴−6⁹)(38⁹−38⁸)
6⁷(-30) × 38⁸(37)
(30)(37)(-6⁷)(38⁸)
Clearly 30 and 37 are factors, so divisible by them
There are 3 sticks because:
4 sticks is the total and when you take away 1 stick, it is
4 - 1, which equals 3 sticks
So, the answer is 3 sticks are left.
Question: If u are in high school, why did you ask this question? You already know 4-1=3. Im guessing it was either a joke, or u were helping other people get points. If it is the second one, thx!!
Answer:
Option A: Multiply the top equation by 
, then add the equations.
Step-by-step explanation:
OPTION A:
When we multiply the top equation by 
we get:
Now, we add the second equation to this, we get:
5x + 2y + 5x - 2y = -1 + 2
The 'y' variable is eliminated.
OPTION B: Note that multiplying the second equation by 2 would result in:
10x - 4y = 4. To eliminate 'y' we should add this equation to the top equation not subtract it. So, this option is wrong.
OPTION C:
Adding the equations also will result in a equation of two variables, viz:
15x + 2y = 0 which does not eliminate any variable at all.
So, OPTION C is also wrong.
Hence, OPTION A is the answer.
