Y=kx
-5=k(15)
-5/15=k
-1/3=k
now,
y=-1/5x
3=-1/5x
3×5=-1(x)
15=-1(x)
multiplying both sides by -1,we get
-15=x
9,6^2+18,8^2=X^2
92,16+353,44=X^2
X^2=445,6
X=21
-30-27= -57
When both numbers are negative, they are “added” in a sense, but remain negative.
-5-(-4)= -1
You have to multiply the (-4) by the “invisible” -1 on the outside before you add/subtract.
Each child gets =7×8=56crayoms
- One box contains 12 crayons
Total boxes
Round to next whole as we can't have depict