Answer:
81-25k²
Step-by-step explanation:
We need to write the expression for "The quantity 81 minus 5k, squared".
Square of any number x is given by x².
Square of 5k is given by : (5k)²= 5²×k²=25k²
Now subtract 25k² from 81.
It means we get : 81-25k². It is required expression.
Oh yeah, nice and simple. Alright, so we have (f*g)(-4). What this means if that they want you to multiple f(x) by g(x), then plug in -4. Lets go do that
(3x+5)(-4x+7)
-12x^2+21x-20x+35
-12x^2+x+35
So, that is what (f*g)(x) is. Now, lets plug in -4
-12(-4)^2+(-4)+35
-12(16)-4+35
-192-4+35
-161
So, your answer would be -161
THIS IS THE EASY WAY!
So, the easy way is to plug in -4 into both f(x) and g(x), them ultiple the solution of each by each other. So,
f(-4)=3(-4)+5 g(-4)=-4(-4)+7
f(-4)=-12+5 g(-4)=16+7
f(-4)=-7 g(-4)=23
When you multiple -7 * 23, you would get the same answer: -161
Answer:
64 2/7
Step-by-step explanation:
0.35x = 150
x = 3000/7
0.15(3000/7) = 450/7 = 64 2/7
The answer is 44 meters because there are four sides and ten plus ten is 20z Twelve plus twelve is twenty four. 24+20 is 44.
Answer:
Isosceles obtuse Triangle