Answer:
Part 1 - B
Part 2 - He did not multiply 2 and -4n. Instead he just subtracted them (3n -4n) that gave him -1n.
The width of the walkway is: 3 feet
Step-by-step explanation:
Given
Length of pool = 20 feet
width of pool = 40 feet
Let x be the width of the side walkway
Then the length with walkway will be: 20+2x
Width with walkway will be: 40+2x
Then total area with walkway:
so,
Dividing both sides by 4
As the measurement of length cannot be negative, we will only consider the positive value.
Hence,
The width of the walkway is: 3 feet
Keywords: Rectangle, Area
Learn more about area at:
#LearnwithBrainly
Answer:
This is the answer of your question .☺☺
Step-by-step explanation:
y+3=4(x-4)
y+3 =4x-16
0=4x-y-19
Equation of the line is 4x-y-19
As slope is 4
Answer:
and
Step-by-step explanation:
The equation of the isotope decay is:
14-Carbon has a half-life of 5568 years, the time constant of the isotope is:
The decay time is:
(There is no a year 0 in chronology).
Lastly, the relative amount is estimated by direct substitution:
Answer:
$33.75
Step-by-step explanation:
Since the price is being marked down 25%, you are really only paying 75% of the original price
Convert 75% to a decimal
75/100=0.75
Multiply
0.75*45=33.75
The dress will cost $33.75
Hope this helps! :)