Answer:
rounded to- 7.07
Step-by-step explanation:
The formula for area of a circle is 
do you need to find the radius by divided the diameter by two, you get 1.5
You then plug in 1.5 into the formula and solve
Answer:
Well if you put -4 where x is.. you still do get the answer of 20.
So that is correct.
Step-by-step explanation:
Answer:
50.264 grams -> 50.2
Step-by-step explanation:
I think x=10
4x=3x+10
subtract 3x from both sides and you get x=10
Let the two numbers be x and y.
The sum is 45, therefore
x + y = 45 (1)
The difference is 5, therefore
x - y = 5 (2)
Add equations (1) and (2).
x + y + (x - y) = 45 + 5
2x = 50
x = 25
From (1), obtain
25 + y = 45
y = 45 - 25 = 20
Answer: 20 and 25
