Answer:
f(2)= -2
g(2)= 12
Step-by-step explanation:
To solve this we use the substitution method. Since f(2) is your variable, we will plug the x-value of 2 into each equation
f(2)= 2(2)^2-5(2)
f(2)=8-10
f(2)= -2
If the same variable is used for both equations then g(x) would be g(2) as well leaving you with
g(x) = 3x^2
g(2)= 3(2)^2
g(2)=12
2x - 9x = 14 (Careful next time you accidentally added an "equal" next to the 2)
-------------------------------------
Simplify
2x-9x=<span>14
</span><span>2x+-9x</span>=<span>14
</span>--------------------------------------------
Combine the like-terms
<span>(<span>2x+-9x</span>)</span>=<span>14
</span><span><span>-7x</span></span>=<span>14
</span>--------------------------------------------------
Now divide -7 to each side
-7x ÷ -7 = 14 ÷ -7
x = -2
------------------------------------------------------
x = -2 is your answer
Answer:
17.2
Step-by-step explanation:
8 to the power of 2 is 64
19 to the power of 2 is 361
361 - 64 is 297
Square root of 297 is 17.2
With an expression like this, you have to raise all the terms to the 3rd power. So the 5 will become
,
will become
, the 4 will become
and finally, the
becomes
. If you place all of these together in the same fraction, the new answer equivalent to the initial expression is
Another unit would be how many METERS have that person ran
