S= number of small boxes
l= number of large boxes
equation 1: s+l=120
equation 2: 15s+45l=3300
solve by elimination, multiply equation 1 by -15.
-15(s+l=120) = -15s-15l=-1800 add to equation 2.
-15s+15s-15l+45l=-1800+3300 = 30l=1500
30l=1500 , l=50
s+l=120, s+50=120 --> s=70
Answer:
Step-by-step explanation:
Given
Express the denominator as
To do this, we divide by the denominator
So, the required fraction is:
Hence:
Given
Express the denominator as
Multiply the fraction a+4/a+4
So, we have:
Apply difference of two squares to the denominator
Take the additive inverse of the numerator and denominator
Hence:
Answer:
3=1+2 because An exterior angle of a triangle is equal to the sum of the opposite interior angles
when 2=1
we can also write it as
3=1+1
3=21(this means twice of angle 1)
Answer
17
Step-by-step explanation:
hope this helps