Answer:
estimate = 90/150 = 6/10 students chose longer days, four days a week.
Step-by-step explanation:
To increase the confidence, you could interview even more students.
i hope this helps, i haven't done this in school in a while!
:)
Answer:
Step-by-step explanation:
B= 42
C= 48
Answer:
17/20, 0.8, 75%
Step-by-step explanation:
17/20=85%, 0.8=80%
85% > 80% > 75%
Answer:
2 m
Step-by-step explanation:
The length and width of a rectangular garden is 10 m and 3 m respectively.
He will double the area of the garden by adding the same number of meters to both the length and the width. Area = 2(10 × 3) = 60 m².
Let x is amount of increase in the length and width such that area will be :
(10+x)(3+x) =60
30+10x+3x+x² = 60
x²+13x-30=0
x²+15x-2x-30=0
x(x+15)-2(x+15)=0
x=2 and x = -15
Neglecting negative value, he aded 2 m toboth length and width of the garden.
Answer:
120 sq. ft.
Step-by-step explanation:
a=lw
a=(12x5)2
a=(60)2
a=120
