Let the width be called x inches, so the length is x+9 inches (width is 9in shorter than length) and x>0
So the area = w*l = x(x+9)
=> x^2+9x=252
=> x^2+9x-252=0
=> x^2 - 12x + 21x - 252 = 0
=>x(x-12) + 21(x-12) = 0
=> (x-12)(x+21)=0
=> x = 12 or -21
but x>0
=> x = 12 in
=> width = 12 in
=> length = 12+9 = 21 inches
brainliest pls
Answer:
Step-by-step explanation:
i mean i would answer it but i cnt see it for some reason?
I’m assuming we are considering ‘before Plan A becomes cheaper’
let n be the number of times you go to the park. Plan A’s cost doesn’t depend on how many times you enter the park,
18.95 + 6.50n > 54.75
6.50n > 54.75 - 18.95
6.50n > 35.8
n > 35.8/6.50 ~ 5.508
You obviously can’t ‘half visit’ a place. So we either round up or down to the nearest whole number.
But wording here is important.
‘before’ basically implies, in this context, ‘what is the limit until x’.
Imagine the meme ‘so the limit is 412 chicken nuggets’ when some guy was paralysed after eating 413 = 412 + 1 nuggets
Using the same logic, ‘the limit is’:
n = 5 visits (round down to the nearest whole)
Answer:
40
Step-by-step explanation:
8/2 = 4
4 x 5 = 20
4 x 5 = 20
20+20 = 40
Answer:
C. The number of crackers in the supervisor's bag is 1 standard deviation to the right of the mean.
Step-by-step explanation:
<u>Data</u>
- the mean number of crackers in each bag is 22
- the standard deviation is 2
mean + standard deviation = 22 + 2 = 24, that is, 1 standard deviation to the right of the mean (the addition is to the right, the subtraction to the left).