The equation is 2x +3.00. If you want to find the cost for two minutes, plug two in for x. Then it will become 4 + 3.00. Add those together and you will get 7.00. So all you have to do is replace x for the number of minutes, then multiply it by two, and finally add it to 3.00
We know that formular for volume of pyramid=area of base ×height
the area of the base is 1/2×base×height
=1/2×15×14
=105cm²
the given volume is 270cm³
∴height=volume÷base area
=270cm³÷105cm²
=
![\frac{18}{7}](https://tex.z-dn.net/?f=%20%5Cfrac%7B18%7D%7B7%7D%20)
=
The input would be 7
You do the number machine ‘in reverse’ to figure it out from output to input.
17 - 3 = 14
14 / 2 = 7
Answer:
-3
Step-by-step explanation:
Let n be the number
product of seven and a number
7n
is negative 21
7n = -21
Divide each side by 7
7n/7 = -21/7
n = -3
The number is -3