X= 9th student test score
Add the 9 test scores and divide that total by 9 to equal the average.
(56 + 92 + 78 + 64 + 85 + 83 + 91 + 77 + x)/9= 78
add in parentheses
(626 + x)/9= 78
multiply both sides by 9
626 + x= 702
subtract 626 from both sides
x= 76
ANSWER: 76 is the score needed by the 9th student for a mean of 78.
Hope this helps! :)
Part A:
x = 8
Part B:
64cm
Part C:
64cm
Part D:
yes
The answer would be 1024<span>x5</span>−<span>1
</span><span><span><span>
(<span><span>2x</span><span>(2)</span></span>)</span>5</span>−1</span><span>=<span><span><span>1024<span>x5</span></span></span>−<span>1
I hope this helped ^^</span></span></span>
Answer:
- The second graph, top right
Step-by-step explanation:
#1, top left
- Has repeating x- values at x = -2, not a function
#2, top right
- No repeat, input or outputs, is a function
#3, bottom left
- Has repeating x- values at x = 0, not a function
#4, bottom right
- Has repeating x- values at x = -1, not a function
where is the shaded region?