Why is there a bunch of dash marks and then the number one...?
Answer:
Step-by-step explanation:
Set up two equations with the information given-- and things you know from experience: a penny is worth 1 cent and a nickel is worth 5 cents. $ 2.38 is 238 cents (so you can eliminate decimals for now)
Put those values into an equation about the total value:
p + 5n = 238
and you know the total number of coins is 66.
p + n = 66
get a value for p by "solving" (subtract n from both sides)
p = 66-n
Substitute that value for p in the first equation. Then solve.
(66 -n) + 5n = 238
4n = 238-66 Then isolate n by dividing both sides by 4
n = 172/4
n = 43 Substitute that in the second equation, then solve for p
p + 43 = 66 p = 66 - 43
p = 23
So Chuck has 23 pennies and 43 nickels
Answer:
Step-by-step explanation:
Split the words at "and" and solve one piece at a time. (when a function has "or equal to", use the ones with the line under 
) Let x be the unknown value
"less than or equal to 87"
"greater than or equal to 83"
Put them together by putting x in the middle. Don't forget to make the signs face the right way:
Done.
Is 1500 ml greater than less than or equal to 1.5 l is equal.
