Answer:
4:1
Step-by-step explanation:
x+20 : y+20 = 5 : 2
(x+20)/(y+20) = 5/2
2(x+20) = 5(y+20)
2x+40 = 5y+100
2x = 5y+60 (1)
x-5 : y-5 = 5:1
(x-5)/(y-5) = 5/1
x-5 = 5(y-5)
x-5 = 5y-25
x = 5y-20 (2)
Solve (1) & (2) simultaneously,
2(5y-20) = 5y+60
10y-40 = 5y+60
5y = 100
y = 20
x = 5y-20
x = 5(20)-20 = 100-20
x = 80
x:y
80:20
4:1
Answer:
No, the blinds will not fit inside a 45-inch space.
Step-by-step explanation:
No, the blinds will not fit inside a 45-inch space, because the blinds are too large.
To check;
140 cm = 56 inches
140 / 2.5 = 56
&
45 inches = 112.5 cm
45 x 2.5 = 112.5
Hope this helps!
8 - 7x - 3 = 19
5 - 7x = 19 |subtract 5 from both sides
-7x = 14 |divide both sides by (-7)
x = -2
Answer:
75 mph
Step-by-step explanation:
In this kind of problem, "per" means "divided by". To find miles per hour, compute <em>miles divided by hours</em>:
(60 mi)/(4/5 h) = (60×5/4) mi/h = 75 mi/h
Nellie is going 75 miles per hour.
