Answer:
31.42
Step-by-step explanation:
you will need a calculator for this
you will need to do 2 x pi x r = C
2 x 3.14 x 5
2x5=10
3.14 x 10 = 31.42
you get 2 when you round to the nearest ten-thousandths
pi = 3.14159
Answer:
(-1, -2)
Step-by-step explanation:
-2x + y = 0
y = 2x
5x + 3y = -11
5x + 3(2x) = -11 => 5x + 6x = -11
11x = -11
x = -1
-2(-1) + y= 0
2 + y = 0 => y = -2
Step-by-step explanation:
For #7 and #8, they have given you the answer of the product but without decimals.
You can just add up all the decimal places for this kind of multiplication.
For example, 6.<u>543</u> and 2.<u>6</u> have 4 decimal places in total (underlined), so just count four: 17.<u>0118</u>.