Answer:
$0.80
Step-by-step explanation:
-3 (1x + 1y = 3.2)
3x + 1y = 8
----------------
-3x - 3y = -9.6
+
3x + 1 y = 8
-------------------
0x -2y = -1.6
÷ -2
-----------------
y = 0.8
one hamburger costs $0.80
Answer:
(B)The surface area is equal to the area of its two-dimensional net.
Step-by-step explanation:
The surface area of a 3D object is the sum of the areas of the various sides that make up this figure. Essentially, if you unroll the object into its 2D net, then the area that this net covers will be the surface area.
Think about a cube, for example. It has 6 square sides, so its surface area is the sum of the areas of those squares. If we take the net of the cube, it's also 6 squares, and if we sum those together, we'll get the same answer.
Thus, the answer is B.
15 is equal to 15, 24 is greater than 15 and so is 32, so c, d, and e are correct
First, the equation has to be rearranged so that y will be isolated on the left-hand side of the equation.
(x + 4)y = 3x - 2y = (3x - 2)/(x + 4)
This form is a rational function which is of course a function. All values of x are possible, except for x when y becomes undefined, thus the domain should be x /= -4. In interval notation, (-inf, -4) U (-4, inf).
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