If you have $8 and something’s cost $3 you will be getting $5 dollars back
1. x^2 + 13x + 36 = 0
using powerful & time-sparing quadratic formula :
delta = 13^2 - 4*1*36 = 25 = 5^2
x1 and x2 = (-13 -/+ 5)/2 = -9 and -4
x^2 + 13x + 36 = (x+9)(x+4)
2. other way : complete the square
b^2 + 12b + 32 = b^2 + 2*6b + 6^2 - 6^2 + 32
b^2 + 12b + 32 = (b+6)^2 - 4
b^2 + 12b + 32 = (b+6-2)(b+6+2) = (b+4)(b+8)
3. other way : -4 "ovious" solution : (-4)^2 - (-4) -20 = 0
so the other is : -4 . a2 = -20/1 ---> a2 = 5
a^2 - a - 20 = (a-5)(a+4)
<span>Yes, this is the exchange rate. If, for example, you wanted to compare the relative value for british pounds to US dollars, you would find the exchange rate online or on one of the business TV channels</span>
2 and 4 are both correct statements.
Answer:
in-control
Step-by-step explanation:
basically, their are 2 types of control charts delineated:
1) <u>uni-variate control chart</u> : shows one quality characteristic
2)<u>multivariate control chart</u> : shows 2 or more than two quality characteristics
in statistics, we have "<em>upper control limi</em>t" and "<em>lower control limit</em>".
if the system/variables are within these limits it is 'in-control' other wise 'out of control'
<u>in-control</u><u> </u>says that all dots are within control limit and they have random pattern.
