Y=x^2-5
y=2x-5
y+5=2x
x=(y+5)/2
y=((y+5)/2)^2-5
y=(y^2+10y+25)/4-5
4y=y^2+10y+25-20
0=y^2+6y+5
0=(y+5)(y+1)
y= -5 or -1
y=2x-5 (y= -5 doesn't work for this one so use -1)
-1=2x-5
2x=4
x=2
Using these answers, you can choose answer D with reasonable certainty.
Answer:
b) 1.34
Step-by-step explanation:
The z score is used to determine the number of standard deviations by which the raw score is above or below the mean. If the z score is positive then the z score is above the mean while for a negative z score implies that it is below the mean. The z score is given by:
For the largest 9%, the score is 100% - 9% = 91% = 0.91
From the normal distribution table, the z score that corresponds to 0.91 is 1.34
Hey there Katie,
Your question states: Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar. ∆ABC rotates 90° clockwise about point P to form ∆A′B′C′. So if we were to rotate the shape 2 which is ∆A′B′C′ toward to P. That would leave us with a 90° angle. So in this case,It would be B'A'C'∆.
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Hope this helps you Katie!
~Jurgen
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What exactly are we trying to work out here?
Answer:
Step-by-step explanation:
There are an estimated 29,819 fire departments in the US Of these, 2,785 ... provided EMS service and advanced life support, and 11,559 (39%) of departments ... The authors would also like to thank the members of the NFPA staff who ... Figure 2 Number of Volunteer Firefighters and Rate per 1,000 Population. 4.
i hope this fact helps some
