2-179
2.5-212.5
3-246
4-313
5-380
5.5-413.5
Step-by-step explanation:
12x2 - 11x - 36
12x2 - 27x + 16x - 36
3x (4x - 9) + 4(4x - 9)
(4x - 9) and (3x + 4) are the factors
Step-by-step explanation:
????
if every adult couple (2 people, 1 man, 1 woman) has 3 or more children, then there are automatically more children than adults.
it is absolutely possible that there are more boys than girls, as it is also possible that there are more girls than boys.
after all, this is a 50% chance, and it is very unlikely that a 50% chance has a true 50/50 split in real events or experiments.
like when flipping a coin. heads and tails will almost never be mathematically precisely split. there will be more heads or more tails.
this might be due to imbalances in the flipping process or in the coin balance itself. or, if truly balanced, it will achieve the full 50/50 split after infinite attempts.
Answer: 112.65408 kilometers
Step-by-step explanation:
Answer:
A- 8x^3 + 12x^2 - x
Step-by-step explanation:
The symbol ^ with a 2 is squared and ^ with 3 means cubed.
1. Add a 1 before the parenthesis on both sides. Now, the equation should look like 1(5x^2 + 6x^3 + 2x) -1(3x - 2x^3 - 7x^2).
2. Now we should distribute. 1 × 5x^2 + 1 × 6x^3 + 1 × 2x -1 × 3x + -1 × -2x^3 + -1 × -7x^2.
3. Now the equation should be simplified.
1 × 5x^2 = 5x^2
1 × 6x^3 = 6x^3
1 × 2x = 2x
-1 × 3x = -3x
-1 × -2x^3 + -1 = 2x^3 -1. In this equation, there is a +- sign together, which is the same as a - sign.
-1 × -7x^2 = 7x^2
4. The new equation is 5x^2 + 6x^3 + 2x - 3x + 2x^3 - 1 + 7x^2
5. Now you can combine the like terms. 5x^2 and 7x^2 can be added, so 5x^2 + 7x^2 is equal to 12x^2. Also, 6x^3 and 2x^3 can be added, so 6x^3 + 2x^3 is equal to 8x^3. Lastly, 2x and -3x can be combined, so 2x - 3x is equal to -1x or -x.
6. So, the simplified equation is 12x^2 + 8x^3 -x. You can also write it as 8x^3 + 12x^2 - x. So, A is the answer.