Answer:
f(2)= 11
Step-by-step explanation:
you have to substitute 2 for every x you see:
f(x) = 3x² + 2x - 5
f(2)= 3(2)^2+2(2)-5
f(2)= 11
Answer:
The area of the label is 
Step-by-step explanation:
step 1
Find the radius
we know that
The volume of the cylinder (can of tuna) is equal to

In this problem we have


substitute and solve for r

Simplify



step 2
<em>Find the lateral area of the can</em>
The lateral area of the cylinder (can of tuna) is equal to

we have



Answer:
<em>The volume inside the giant sugar cube is 27 cubic feet.</em>
Step-by-step explanation:
It took 54 feet² of material to build the giant sugar cube. That means, the total surface area of the cube is 54 feet²
<u>Formula for surface area of a cube</u> is:
, where
is the length of each edge of the cube.
So, we will get.........

Now, <u>the volume of the cube will be</u>:
feet³
Thus, the volume inside the giant sugar cube is 27 cubic feet.
Answer:
.66
Step-by-step explanation:
divide 3 into 2 = .66
Answer:
b) -10
Step-by-step explanation:
x^2 + 3x + k = (x - 2)(x - a)
(x - 2)(x - a) = x^2 - 2x - ax + 2a = x^2 + [-2 - a)x] + 2a
-2 - a = 3
2a = k
a = -5
k = 2(-5) = -10
Answer: b) -10