Let sum of 3 numbers be x.
Average of 3 numbers and 8 =
25 =
100 = x +8
x= 92.
The sum of 3 numbers is 92.
Answer:
(-4.5, 4.25) The first one.
Step-by-step explanation:
Plug in -4.5 in for x and 4.25 for y in BOTH problems. When you plug them in and they both work out for BOTH problems then its the answer.
Answer:
The answer to your question is No
Step-by-step explanation:
Data
function f(x) = 2x³ + x² - 10x - 12
To know if a number is a root of a function, evaluate the function on that number, if the result is zero, then that number is a root.
Substitution
f(-2) = 2(-2)³ + (-2)² - 10(-2) - 12
Simplification
f(-2) = 2(-8) + 4 + 20 - 12
f(-2) = -16 + 4 + 20 - 12
f(-2) = -28 + 24
f(-2) = -4
-2 is not a root that the function.
Usually you use addition to find a sum.
It is a negative 2 so the answer is (7,-2)
