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:
D(t)=200-40*t
Step-by-step explanation:
He was already travelling for 3 hours, so he travelled 3*40=120miles. Total distance between his house and city A is 120+80=200miles. And he is travelling 40m/h. So I think this function represent his distance from city A depending how much time he was travelling (t).
D(t)=200-40*t
Answer:
x= 29
Step-by-step explanation:
If you are taking the cm to km then it would be like this
4.5km*4.1cm= 18.45km
Answer:
(1,-5) (6,-5) (1,-7)
Step-by-step explanation:
For the bottom left of the triangle, the coordinate would be = (1,-5)
The bottom right, = (6,-5)
Top left = (1,-7)