Answer:
The number is 8
Step-by-step explanation:
Answer:
b)-9,2
Step-by-step explanation:
x^2+7x-18=0
x^2+9x-2x-18=0
x(x+9)-2(x+9)=0
(x+9)(x-2)=0
therefore
x=-9
x=2
A^2 - b^2 = (a+b)(a-b)
answer :
t^2 - 1
n^2 - 225
Answer: x = 120
Step-by-step explanation:
Answer:
See Explanation
Step-by-step explanation:
Given
![Initial = 8](https://tex.z-dn.net/?f=Initial%20%3D%208)
(every hour)
Required
Explain why it is linear
First, we need to determine the equation that represents the scenario
Let x be the number of hours worked and y be the number of figurines at x hours.
The equation is determined as follows:
![y = Initial\ Figurines + Increment * x](https://tex.z-dn.net/?f=y%20%3D%20Initial%5C%20Figurines%20%2B%20Increment%20%2A%20x)
This gives:
![y = 8 + 3 * x](https://tex.z-dn.net/?f=y%20%3D%208%20%2B%203%20%2A%20x)
![y = 8 + 3x](https://tex.z-dn.net/?f=y%20%3D%208%20%2B%203x)
Reorder
![y = 3x + 8](https://tex.z-dn.net/?f=y%20%3D%203x%20%2B%208)
A linear equation is of the form
![y = mx + b](https://tex.z-dn.net/?f=y%20%3D%20mx%20%2B%20b)
By comparison,
is equivalent to ![y = 3x + 8](https://tex.z-dn.net/?f=y%20%3D%203x%20%2B%208)
<em>Hence, we can conclude that the situation is linear</em>