Answer:
Part 9) The number of items on Emily's grocery list is 5 and the number of items on Bobby's grocery list is 13
Part 10) The height of the taller bookshelf is 4 feet and the height of the shorter bookshelf is 1 foot
Step-by-step explanation:
Part 9)
Let
x ----> number of items on Emily's grocery list
x ----> number of items on Bobby's grocery list
we know that
----> equation A
----> equation B
Solve by substitution
Substitute equation A in equation B

solve for x



Find the value of y

therefore
The number of items on Emily's grocery list is 5 and the number of items on Bobby's grocery list is 13
Part 10)
Let
x ----> the height of the taller bookshelf in feet
y ----> the height of the shorter bookshelf in feet
we have
----> equation A
Remember that

To convert inches to feet divide by 12
so

----> equation B
Solve the system by substitution
substitute equation A in equation B
solve for y
Find the value of x

therefore
The height of the taller bookshelf is 4 feet and the height of the shorter bookshelf is 1 foot
9/12 dividing both the numerator and the denominator by 3
9/3=3
12/3=4
this reduces down to 3/4
Answer:
9.58
Step-by-step explanation:
total score needed
9.5 * 5 = 47.5
Score from 4 judges
9.48 * 4 = 37.92
Score needed from 5th judge
47.5 - 37.92 = 9.58
Answer:
can you show me picture please so i can answer it
Step-by-step explanation:
The answer is C because 1 changes nothing