Answer: 92
Step-by-step explanation:
Formula : Sum of first n numbers = Average x n
Given: Average score on first 6 tests= 84
A score on all 8 tests = 86
Then, Sum of first 6 numbers = 84 x 6 = 504
Sum of first 8 numbers = 86 x 8 = 688
Sum of two last numbers = (Sum of first 8 numbers) - (Sum of first 6 numbers)
= 688-504
=184
Average of last two numbers = (Sum of two last numbers )÷2
= 184÷2
= 92
Hence, the average of your last two test scores = 92.
Answer:
I THINK the answer is 57
Step-by-step explanation:
Add 51 + 36 + 84
Divide 171 by 57
57 is the most that can go into 171 evenly.
Answer:
y= -2x+8
Step-by-step explanation:
y-y₁=m(x-x₁)
This is the point slope form equation that can be used to solve this.
Plug in the slope for m and (6,-4) for (x₁,y₁)
y-(-4)=-2(x-6)
Simplify.
y+4= -2x+12
y= -2x+8
