Answer:
y = x³ + 2x² - 13x + 10
Step-by-step explanation:
Given
y = (x + 5)(x - 1)(x - 2) ← expand (x - 1)(x - 2)
= (x + 5)(x² - 2x - x + 2)
= (x + 5)(x² - 3x + 2)
Multiply each term in the second factor by each term in the first factor
= x(x² - 3x + 2) + 5(x² - 3x + 2) ← distribute both parenthesis
= x³ - 3x² + 2x + 5x² - 15x + 10 ← collect like terms
y = x³ + 2x² - 13x + 10
Answer:
Step-by-step explanation:
For this case we have the following value:
We can convert this first to 
like this:
Now we use the fact the the pressure is defined as 
, whre P is the pressure, F the force and A the area, so then 
and then we can replace this:
Now from definition of work we know that 
where W is the work, F the force and d the distance, so then is equivalent 
And if we replace this into the equation we got:
Answer:
24
Step-by-step explanation:
percent of 280 is 67.2
280×y/100=67.2
280y/100=67.2
2.8y=67.2
divide by 2.8
y=24
verify
280×24/100=67.2
6720/100=67.2
67.2=67.2
Answer:
If they are travelling in opposite directions, their total distance is the 135. So add their distances together to get 135
x=Quinn's speed
x+5 = James' speed
they each travel for 5 hours
speed x time = distance
x(5) + (x+5)(5) = 135
Quinn's distance + James' distance = total distance
5x+5x+25=135
10x = 110
x = 11
Quinn travels at 11 mph and James travels at 16 mph
Quinn travels 55 miles (5x11)
and James travels 80 miles (16 x 5)
80 + 55=135
