Denise has taken four math tests this semester and
1 answer:
Answer:
93
Step-by-step explanation:
Setup an equation. Add the 5 tests together, the unknown test will be represented by x, Since there are 5 tests total, you will divide by 5. to find the average.
To solve first multiply both side by 5.
Add the left side and then solve for x
Subtract 357 from both sides
357 - 357 + x = 450 - 357
x = 93
The last test has to be a score of 93 to get an average of 90.
You might be interested in
An expression in terms of s that represents the number of large bottles is : L =
The company makes s small bottles every minute
let ; M represent the number of medium bottles made every minute
L represent the number of large bottles made every minute
small bottles to medium = 2 : 3
small bottles to medium = s : M
M is the unknown, so to find how many medium bottles that has been made, we must cross multiply
2M = 3s
M = medium bottles made every minute
medium bottles to large bottles = 3 : 5
medium bottles to large bottles = M : L
where M =
The equation becomes:
3 : 5
: L
L is the unknown, so to find how many Large bottles that has been made, we must cross multiply
3L =( ) * 5
L =
L = ( s)
L = 2.5 s
therefore the large bottles the company makes every minute is 2.5s large bottles
we can conclude that the expression for the number of large bottles the company makes every minute with respect to s is : L = 2.5 s
Learn more about Ratio : brainly.com/question/1509142