Answer:
x = -10
Step-by-step explanation:
This is the additive identity postulate. The idea that adding 0 to any number results in the same number.
Answer:
-3 and 1
Step-by-step explanation:
(x+3)(x-1)=0
x+3=0
x-1=0
x=-3
x=1
Answer: 4
i hope this helps
the first step was
5=2x-3
5=2x-3
then the picture shows the rest
Answer:The ratio of the number of children who can swim to the number of children who cannot swim=2:1
Step-by-step explanation:
Number of children that can swim = N umber of boys and girls that can swim =23+17 =40
Number of children that cannot swim = N umber of boys and girls that cannot swim=9+11=20
=40:20
=2:1