2k3-3k2-2k. Change signs in second polynomial to get rid of subtraction sign, collect like terms
Answer:
Answer is 2 root under 20
9514 1404 393
Answer:
7 1/3 hours
Step-by-step explanation:
We are to assume that the total number of heater-hours required is a constant. That is, the time is inversely proportional to the number of heaters.
If the number of heaters goes up by a factor of 6/4 = 3/2, then the number of hours will go down by the inverse factor: 2/3.
With 6 heaters instead of 4, the time required is (2/3)(11 hours) = 7 1/3 hours.
Answer:
2.6
Step-by-step explanation:
Given:
f(x) = 0.80x
where,
f(x) = the cost
x = weight of apples in pounds
Pounds of apples = 3.25 pounds
Find the cost?
f(x) = 0.80x
Substitute into the equation x = 3.25
f(x) = 0.80x
= 0.80(3.25)
= 2.6
f(x) = 2.6
Therefore, the cost of 3.25 pounds of apples is 2.6
Answer:
Because the price did not stay the same when they discounted it by 10% percent before.
Step-by-step explanation:
10% percent of 450 is 45 so Subtracting that from 450 would give you,405.
They deducted another 10% percent a week later 10 percent of 405 would be 40.5 so you would subtract that from 405 which would make it 364.5
If you took 20% off originally then 20% of 450 is 90 so subtracting that would make 450 into 360 which is different from 364.5