Answer:
Let x and y be the two numbers. Then
yx=57 and x−y=20
Cross multiplying the proportion
5x=7y or y=75x
So, x−y=20
x−75x=20⇒77x−5x=72x=20
⇒x=2140=70
y=75x=75×70=50
So smaller number is 50.
Check :yx=5070=57 and 70−50=20
40 or literally any number greater than 10.
Answer:x=9
Step-by-step explanation:
The square root is the opposite of squaring a number. When you square a number you times it by itself. So if you square 3 you get 3x3=9. Square root is finding what number you multiply times itself to get 9...
Answer with Step-by-step explanation:
We are given that
Radius of circular disk=r=21 cm
dr=0.2 cm
a.Area of circular disk=A=



Where 

b.Relative error=
Relative error=
Percentage(%) error=
%
I don’t have all the answer choices considering there are 6 with only a couple answers.
problem one is y = x/4
problem six is y = 4x