Z-score=(score-mean) standard deviation
test A : z(A)= (90-64)/8=3.25
test B: z(B)= (95-60)/10=35/10=3.5
she did better on test B,
answer is A
Answer:
y=1/2x+4
Step-by-step explanation:
Refer to the picture that given :)
Answer:
The area of a sector GHJ is 
Step-by-step explanation:
step 1
we know that
The area of a circle is equal to

we have

substitute


step 2
Remember that the area of a complete circle subtends a central angle of 360 degrees
so
by proportion find the area of a sector by a central angle of 65 degrees

Use 

You just add the LxW and for area you multiply LxWxLxW