Answer:6x^3+16x^2-42x-40
Step-by-step explanation:
To expand
(-2x-8)(-3x^2+4x+5)
6x^3-8x^2-10x+24x^2-32x-40
Collect like terms
6x^3-8x^2+24x^2-10x-32x-40
6x^3+16x^2-42x-40
Answer is 7.6...... hope this helps
Step-by-step explanation:
Easy steps!
- Turn the fraction into a decimal first (or in other words, divide) (<em>For Example: 1/2 = 0.5)</em>
- Move the decimal point to the right TWO times, and voila (<em>For example: 0.5 = 50%)</em>
Answer:
35.09hours
Step-by-step explanation:
<em>Since we are not told what to find, we can as well look for the time it took to ascend</em>
Given
Distance below surface of water = 2000m
Speed = 57m/hr
Required
Time
Using the formula;
Speed = Distance/Time
Time = Distance/Speed
Time = 2000/57
Time = 35.09hours
Hence it took 35.09hours to ascend