Answer:
42
Step-by-step explanation:
f(3)=2(3)^3-(3)^2-4(3)+9
f(3)=2(27)-(9)-12+9
f(3)=54-21+9
f(3)=33+9
f(3)=42
Answer:
348 frogs
Step-by-step explanation:
ratio = 3:7
total of ratio = 10
frogs = 3/10 × 1280 = 348 frogs
Answer:
The value of x = 22/3
Step-by-step explanation:
x + 5 - 1/3 = 12
=> x+5 = 12 + 1/3
=> x + 5 = (36 + 1) /3
=> x + 5 = 37 /3
=> (x+5) 3 = 37
=> 3x + 15 = 37
=> 3x = 37 -15
=> 3x = 22
=> x = 22/3
Answer:
(2+6=8) and 12.3+19=21.3 hope this helps
Step-by-step explanation:
Answer:
Elimination isn't exactly the easiest for this situation. But since the equations are in the same form and not solved for the same variable, I would go with elimination. (If they were solved for the same variable, I would go with substitution.) It would require me to make a manipulation on both equations.
I would multiply first equation by 5 and second equation by -2. The reason I would do this is because the y's would have opposite coefficients and when you add opposites you get 0.
The new set of equations would look like this:
20x+10y=45
-14x-10y=2
But I will slope here since we aren't asked to solve it.
Some texts use the term linear combination instead of elimination. They are the same.
