When Paolo tried to simplify 5 - 7 at Step 2, instead of keeping the sign of the answer, -2, he added it. He really should have written 3 - 2.
$273.60
18 x 40= 720
720 x 0.72 = 518.4
518.4 x 4 = 2,073.6
2,073.6 - 1,800 = $273.60
Answer:
81 1-inch cubes
Step-by-step explanation:
Cube root of 729 is 9
9 x 9 = 81
Further explanation:
A cube has 3 measures (there are all the same) to solve for the volume. If the volume is 729, and it is a cube, you would solve for the cube root, because all the numbers are the same. Then, we would get 9. Now, since a cube is made up of faces, and each one is a square, we do 9 x 9 to get the area, which is the answer, because 1-inch cubes are literally just units.
You would have to plug in the numbers in the equations. I will do one and you can do the rest:)
g(x) = 2x + 4
g(10) = 2(10) + 4
g(10) = 20 + 4
g(10) = 24 <— That is the answer for g(10)
Now you plug in the other ones and solve!
Hope I helped:)
A straight angle measures 180 degrees.
Angle x and the 150-degree angle form a straight angle.
x + 150 = 180
x = 30
Angle z and the 100-degree angle form a straight angle.
z + 100 = 180
z = 80
Now you know the measures of two angles of the three angles of the triangle. The sum of the measures of the angle of a triangle equals 180 degrees.
x + y + z = 180
30 + y + 80 = 180
y + 110 = 180
y = 70
Answer: x = 30; y = 70; z = 80
