(a) 95 = (x+7)*(x-7)
(b) 95 = (x+7)*(x-7)
Expand the brackets:
95 = x² -7x + 7x -49 = x² - 49
Subtract x² from both sides:
95-x² = -49
Subtract 95 from both sides:
-x²=-49-95
-x²= -144
Divide both sides by -1 to get rid of the negative numbers:
-x²/-1=-144/-1
x²=144
Take the square root of 144:
x = ± squareroot of 144
x = 12 or -12
x = 12 because you cannot have a negative age so Trina is 12 years old.
Answer:
0.08333... or 8.333...%
Step-by-step explanation:
1/6 * 1/2 = 1/12
(4,4).........................
Answer:
For not exact divisions: Writing the results as Quotient + Remainder over the Divisor.
For exact division: just the quotient.
Step-by-step explanation:
Hi there,
In both algorithms, for long and synthetic divisions we must write the result as an expression following that order:
![Dividend: Divisor=Qx+\frac{Rx}{Dx}](https://tex.z-dn.net/?f=Dividend%3A%20Divisor%3DQx%2B%5Cfrac%7BRx%7D%7BDx%7D)
When the Division leaves no Remainder, i.e. an exact, the Remainder is equal to zero, so
![Dividend: Divisor=Qx](https://tex.z-dn.net/?f=Dividend%3A%20Divisor%3DQx)
Check below for the algorithms for each division and the way of writing their expressions (results).
The equation youre using is y=mx+b
b is the y int which 3 and the slope between the points is 5/2 so your equation is y=5/2x+3