Answer:
51
Step-by-step explanation:
Given
P(x) = 2x³ + 4x² - 10x - 9, then
P(a) = 2a³ + 4a² - 10a - 9 ← substitute x = a into P(x)
To evaluate P(3) substitute a = 3 into P(a)
P(3) = 2(3)³ + 4(3)² - 10(3) - 9 = 54 + 36 - 30 - 9 = 51
Since P(3) ≠ 0 then (x + 3) is not a factor of P(x)
An Expression is a group of numbers, variables, and operators. An equation is described as a mathematical statement.
Hope this helps
Answer:
Step-by-step explanation:
15 percent of what number is 12?
12 is 15% of 80
Steps to solve "12 is 15 percent of what number?"
We have, 15% × x = 12
or,
15
100
× x = 12
Multiplying both sides by 100 and dividing both sides by 15,
we have x = 12 ×
100
15
x = 80
If you are using a calculator, simply enter 12×100÷15, which will give you the answer.
Simplify both sides of the equation and isolate the variable!
The answer would be 3.6
Answer:
60.72
Step-by-step explanation:
Monday: 60 degrees
Tuesday: temperature increases by 10 percent
60 + 10% of 60
60 + .10*60 = 70 +6 = 66
Wednesday: temperature decreases by 8 percent
66 - 8%of 66
66 - .08*66 = 66 -5.28=60.72
