Answer: 8
Step-by-step explanation:
The distance formula is used to find the distances to each of the points:
d = √((x2-x1)² +(y2-y1)²)
d = √((4-0)² +(2-0)²) +√((4-8)² +(2-(-1))²) +√((4-5)² +(2-4)²)
d = √20 +√25 +√5 = 2√5 +5 +√5
d = 5 +3√5
Comparing to the form
d = m +n√5
we see that m=5, n=3. The the sum m+n = 5+3 = 8.
(sorry if im wrong)
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Answer:
Step-by-step explanation:
So Blakes sleep 8 hours per night during the school day
8 hours/night...................................100%
6.5 hours/night...................................?
6.5*100/8=81.25
the change in percentage is 100-81.25=18.75%
the percentage change is 18.75
if it is easier for you, another method is:
8-6.5=1.5 subtract the original amount to the new amount
1.5/8=0.1875 divide by the original amount
0.1875*100=18.75 find the percentage
Answer:
S={( 1 )}
Step-by-step explanation:
-3x²+6x+1=4
-3x²+6x+1-4=0
-3x²+6x-3=0
∆=b²-4.a.c
∆=(6)²-4.(-3).(-3)
∆=36-36
∆=0
x'=x"=-b/2a=-(+6)/2.(-3)=-6/-6=1
Answer:
70 miles per hour
Step-by-step explanation:
422 divided by 6
