Answer:
at least three are dimes
so we have 20 coins with a total of 3.50
if the rest are all quarters then there would be 4*3+2=14 but we need 20
so we are 6 short
we must have dimes in multiples of 5
12 q + 5 d=3.50 but only 17 coins
10q +10 dimes=3.50 with 20 coins
10 q +13 dimes total
algebraic solution
d+q=23
25q+10d=380
d=23-q
D=100:
g=12-1/25(100)
g=12-4
g=8, d=100
d=200:
g =12-1/25(200)
g=12-8
g=4, d=200
d=300:
g =12-1/25(300)
g=12- 12
g=0, d=300
Answer:
the correct answer is C: 38÷16
38÷16 = 2.375
speed = distance/time
speed = 8/24 = 1/3 km per minute
Answer:
4 is the answer....
Step-by-step explanation:
by putting the value of g and h, we get ;
- =》4 - ( 0.25 × 10 ) + ( 0.5 × 5 )
- =》4 - 2.5 + 2.5
- =》4
hence, the solution is 4
