Answer:
L=10cm , W=30cm
Step-by-step explanation:
First use the given that W=10+2*L
Use P=2W+2L=80, substitute W in the perimeter formula
2(10+2L)+2L=80 and solve for L,
20+4L+2L=80 isolate variable L and combine like terms,
6L=80-20,
L=10, so W=10+2*10=10+20=30
Mean of all scores means add them all up then divide by number of scores (5)
so
the mean has to be at least 95 aka, greater than or equal to 95
so
represent the last score with x
mean is the sum of all scores


multiply both sides by 5

minus 378 from both sides

he has to get at least 97 on the last test to get the highest score
good luck, marvin
Answer:
iateabuginthehosue
Step-by-step explanation:
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Answer:
no it's different 30% would be 12 and 40% would be 16 if it was going into 30 now mark as brainliest
The answer to your question is 6x^2-12x