Answer:
Step-by-step explanation:
a) Let the cost of a Pizza = $ x
Cost of three pizza's = 3 *x = 3x
cost of 3 pizza + cost of a salad = $ 20.7
3x + 3 = 20.7
b) 3x + 3 = 20. 7 {Subtract 3 from both sides}
3x = 20.7 - 3
3x = 17.7 {Divide both sides by 3}
x = 17.7/3
x = 5.9
Cost of one pizza = $ 5.9
If the place to the right of where you are rounding is 5 or higher, you have to round up. If it is 4 or lower, you have to round down. In the hundreds place, there is a 4. That's lower than 5 meaning that you round down/stay. So, the nearest thousands place is 3,000.
Answer:
First - y=-2x+3
Second - y=-7+3
Step-by-step explanation:
Answer:
a)
b)
Step-by-step explanation:
slope formula
=
b) using point (-2,4)
Now distribute
add 4 to each side
can use the other point given if you want
Answer:
3 units
Step-by-step explanation:
The formula for the volume of the cone is given by
Substituting in above formula
![18\pi=\frac{1}{3} \pi*x^{2}*2x\\ \\ 54=2x^{3} \\ \\ x^{3} =27\\ \\ x=\sqrt[3]{27} \\ \\ x=3\ units](https://tex.z-dn.net/?f=18%5Cpi%3D%5Cfrac%7B1%7D%7B3%7D%20%5Cpi%2Ax%5E%7B2%7D%2A2x%5C%5C%20%5C%5C%2054%3D2x%5E%7B3%7D%20%5C%5C%20%5C%5C%20x%5E%7B3%7D%20%3D27%5C%5C%20%5C%5C%20x%3D%5Csqrt%5B3%5D%7B27%7D%20%5C%5C%20%5C%5C%20x%3D3%5C%20units)
Thus, the radius of the cone is 3 units.
