Percent means parts out of 100 so
40%=40/100=4/10
'of' can be translated as multiply
50 times 4/10=200/10=20
$20=lunch
A $20.48
256x.08=$20.48 per quarter
Answer:
θ = -36.9° or +323.1°
Step-by-step explanation:
θ = arctan(-6 / 8) = -36.86989...
Remember we can do anything to an equation as long as we do it to both sides
and adding a negative of something cancels it so
-2d+3=17+5d
isoltate unknown
add 2d to oth sides
3=17+7d
subtract 17 from both sides
-14=7d
divide 7
-2=d
The total number of marbles in the bag is 7, since 3+4=7. There are 3:4 black marbles, so 3/7 of the bag is black marbles, which can be written as 3:7.
4/7 of the bag is red marbles, which can be written as 4:7