Answer:
45 ounces
Step-by-step explanation:
Answer:
Step-by-step explanation:
<u>Solving in steps</u>
- x^2(x - 1)(x - 4) - 2x^3 = -6x^2, x > 0
- x^2(x^2 - 5x + 4) -2x^3 + 6x^2 = 0
- x^4 - 5x^3 + 4x^2 - 2x^3 + 6x^2 = 0
- x^4 - 7 x^3 + 10x^2 = 0
- x^2 - 7x + 10 = 0
- x^2 - 2x - 5x + 10 = 0
- x(x - 2) - 5(x - 2) = 0
- (x - 2)( x - 5) = 0
- x - 2 = 0 ⇒ x = 2
- x - 5 = 0 ⇒ x = 5
Fast trick to calculate percentages that I always use.
If you need to find 10% of something, just move one place to the left.
Example:
10% of 100 is 10
10% of 90 is 9
10% of 823 is 82.3
10% of 120 is 12
and so on.
Now that you know how to calculate 10% of ANY number, to get 20% is to just multiply it by two.
<span>10% of 90 is 9 so 20% is 18
</span><span>10% of 823 is 82.3 so 20% is 164.6
</span><span>10% of 120 is 12 so 20% is 24</span>
Let's now try it on your problem.
10% of 80 is 8
So 20% of 80 is 16!
One more quick tip:
If you want to let's say find 23% of 80, you move two places to the left to get 1%
1% of 80 is 0.8
And now you multiply 1% with 23 to get 23%
23% of 80 is 0.8 * 23 = 18.4 and voila, now you can calculate percentages easily!
Answer: 0.007
Step-by-step explanation:
Just divide 7 by 1000
or 7. and move the decimal place 3 to the left.
7. -> .007
