Find the width of a rectangle with a perimeter of 90 and a length of 15. Draw and label the rectangle first to set up your probl
em
2 answers:
<u>Answer:</u>
width = 30
<u>Step-by-step explanation:</u>
We know that the formula for finding the perimeter if a rectangle is:
<em>Perimeter of a rectangle = 2 (l + w)</em>
We are given the value of the perimeter and the length so we can find the width of the rectangle by putting in the given values.
Perimeter of rectangle = 2l +2w
90 = 2(15) + 2w
90 = 30 + 2w
90 - 30 = 2w
w = 60 / 2
w = 30
Therefore, the width of the rectangle, with length 15 and perimeter 90, is 30.
You might be interested in
Each week, there are 24+12x more new instances recorded than there was the previous week which is increasing exponentially.
There were 24 cases of flu reported in a city's hospital on January 4.
In the next 5 weeks, the number of new cases reported each week had grown exponentially.
Let "A" represent the number of flu cases at time "t." Any population "A" grows exponentially over time at a rate of "t." The beginning population directly affects the rate of population change.
dA/dt = k( T - 24 )
T- 24 = c × [Differentiate with 't']
T = 24 + c ×
After 1 week T = 36 and t = 1
36 - 24 = c × 1
c = 12
T = 24 + 12x.
Therefore, 24 + 12x new instances have been reported each week, increasing exponentially.
Learn more about the exponential rate of change here:
#SPJ1