Answer:
Step-by-step explanation:
2/10: 0.2
19/20: 0.95
19/6: 3.1667
17/4: 4.25
7/4: 1.75
9/20: 0.45
Answer:
Y=15
Step-by-step explanation:
2(4)+7
8+7
15
Y = 3/8(x + 4)....multiply both sides by 8/3, eliminating the 3/8 o the right
8/3y = x + 4....now subtract 4 from both sides
8/3y - 4 = x <==
n = m^2 - (n + 3)
n = m^2 -n - 3...add n to both sides
n + n = m^2 - 3
2n = m^2 - 3...add 3 to both sides
2n + 3 = m^2...take sqrt of both sides, eliminating the ^2
sqrt (2n + 3) = m or m = - sqrt (2n + 3) <==
Answer:
1. 36 rocks in total.
2. 15 purple rocks more than blue rocks
Step-by-step explanation:
1. Purple rocks are 
of all rocks, then the remainder is 
of all rocks.
2. Blue rocks are 
of the remainder, then blue rocks are
of all rocks.
3. Silver rocks are the rest, that is
of all rocks.
4. It is known that the number of silver rocks is 3, then if x is the number of all rocks, 
of x is 3:
Hannah has 36 rocks in total. 3 of them are silver, 
are blue and 
are purple. Then she has 
more purple rocks than blue.
