Answer:
5x+4y<=20
Step-by-step explanation:
We are expected to model the expression for the cost of the softball and the Hardball combined.
le the number of hardballs be x
let the number of softs balls be y
the cost of the hardballs is =5x
the cost of softball is =4y
therefore given that the total cost is =$20
the expression for the cost of x and y balls is given as
5x+4y<=20
The answer is X=23 and y=9
Answer:
5+x=14
-5 -5
0 +x=9
x=9
fill in
5+9=14
so its true
x=9 but it can also be -9 since it's in | |
so x=9 or -9
Answer:
The answer to your question is mass = 8.73 kg
Step-by-step explanation:
Data
1 quart ----- 2 mi
density = 0.99 g/ml
total distance = 30 km
Process
1.- Convert 2 mi to km
1 mi ------------------- 1.61 km
2 mi ------------------ x
x = (2 x 1.61)/1
x = 3.22 km
2.- Calculate the quarts drank
1 quart --------------------- 3.22 km
x --------------------- 30 km
x = (30 x 1)/3.22
x = 9.32 quarts
3.- Convert quarts to milliliters
1 quart --------------------- 946.35 ml
9.32 quart ------------------- x
x = (9.32 x 946.35) / 1
x = 8817 ml
4.- Calculate the grams of water
density = mass / volume
mass = volume x density
-Substitution
mass = 8817 x 0.99 g/ml
-Result
mass = 8729 g
5.- Convert to kg
mass = 8729/1000 kg
mass = 8.73 kg
You find their difference, of course!
E.g. 17:15 - 13:40 = 3:35/ 3 hrs 35 min.
Just remember that a full hour (1:00) is 60 minutes (0:60). You would never write anything as 0:60, though! Anything over 0:59 becomes 1:00 + the remaining number of minutes.
Hope this wasn't too confusing! Practice makes it easier to handle and understand, so try it out! Hope this helps :)
