Answer:
There is a 47cm difference between the two....
So you just added 28cm to 19cm to get 47cm....
Because 19-(-28) is 19 + 28.
Hope this helps :D
Step-by-step explanation:
Because they will give you the same answers lol
Answer:

Step-by-step explanation:
Circumference of a circle is 
The diameter is
inches as shown in the readings of the scale.


Answer:
a) (4,5)
b) (0,-3)
Step-by-step explanation:
We have to perform the following reflection over given ordered pair.
a) Reflect the ordered pair (-4,5) across the y-axis
Reflection over y-axis:

Thus, (-4,5) will be reflected over y-axis as

b) Reflect the ordered pair (0,3) across the y-axis
Reflection over x-axis:

Thus, (0,3) will be reflected over x-axis as

I don't know vrghhhhhhhhhhhh