D=dimes
q=quarters
d + q = 20
.10d + .25q = 3.05
d=-q + 20
.10(-q + 20) +.25q = 3.05
-.10q + 2 + .25 = 3.05
.15q + 2 = 3.05
.15q + 2 - 2 = 3.05 - 2
.15q = 1.05
.15q/.15 = 1.05/.15
q = 7
d + 7 = 20
d + 7 - 7 = 20 - 7
d = 13
Sally has 7 quarters and 13 dimes.
Hope this helps!
Fourth one i think (the way u typed the q is confusing)
Jess trains at 8 miles per hour and terrance trains at 12 miles an hour
Answer:
soil and rocks are Rocks are made of one or more minerals. Soil is formed of fine rock particles mixed with air, water and particles from dead plant and animal matter. There are three main types of soil which are classified according to the amount of sand and clay in them. i hope this helps
Step-by-step explanation:
Answer:
1 element list
Step-by-step explanation:
