Answer:
Step-by-step explanation:
Given that Student scores on exams given by a certain instruc-tor have mean 74 and standard deviation 14.
Group I X Group II Y
Sample mean 74 74
n 25 64
Std error (14/sqrtn) 2.8 1.75
a) P(X>80) =
b) P(Y>80) = 
c) X-Y is Normal with mean = 0 and std deviation = 
P(X-Y>2.2) = 
d) 
Answer:
-8+6+5x-2, -4+5x, -2(2)+1(5x)
Answer:
1). This is a right angle triangle = TRUE
2). The hypotenuse of the triangle has a length of 21 = FALSE ("C" is the hypotenuse which makes 21 and 20 the leg of the triangle)
3). One of the legs has a length of 20 = TRUE
4). The length of "c" can be found by 202 + c2 = 212 = FALSE (To calculate the hypotenuse of the triangle you should use the formula a² + b² = c² )
Answer:
X^2-3x+1=0
(x squared minus 3x plus one equals 0)
Step-by-step explanation:
It is C= >
because the value of x is 7
by putting the value of x
52 +(x-3)2=___=35
52+ (4)2=___=35
52+8=___=35
60=___=35
so 60 > 35
