Answer:
OB
Step-by-step explanation:
The slopes are not changed.
See the picture of the 2 graphs. The slopes are the same,, but the y intercepts are different, so the lines are parallel.
Answer:
x=9
Step-by-step explanation:
Answer:
P ( -1 < Z < 1 ) = 68%
Step-by-step explanation:
Given:-
- The given parameters for standardized test scores that follows normal distribution have mean (u) and standard deviation (s.d) :
u = 67.2
s.d = 4.6
- The random variable (X) that denotes standardized test scores following normal distribution:
X~ N ( 67.2 , 4.6^2 )
Find:-
What percent of the data fell between 62.6 and 71.8?
Solution:-
- We will first compute the Z-value for the given points 62.6 and 71.8:
P ( 62.6 < X < 71.8 )
P ( (62.6 - 67.2) / 4.6 < Z < (71.8 - 67.2) / 4.6 )
P ( -1 < Z < 1 )
- Using the The Empirical Rule or 68-95-99.7%. We need to find the percent of data that lies within 1 standard about mean value:
P ( -1 < Z < 1 ) = 68%
P ( -2 < Z < 2 ) = 95%
P ( -3 < Z < 3 ) = 99.7%
Answer:
Step-by-step explanation:
Slope = (-1-3)/(6+2) = -4/8 = -1/2
Equation of a line is
y-y1 = m(x-x1)
y-3 = (-1/2)(x+2)
y = 3 + (-1/2)(x+2)
Answer:
yes
Step-by-step explanation:
line ab^2=(3-0)^2+(5-2)^2=9+9=18
line bc^2=((0-(-2))^2+(2-10)^2=4+64=68
line ca^2=((-2)-3)^2+(10-5)^2=25+25=50
bc>CA>ab
if it's a right triangle, then bc^2=ab^2+ca^2
68=50+18
so, it's a right triangle
