Answer:
Let's denote:
Number or gifts cost 20 = x
Number or gifts cost 22.5 = y
Then, we have:
x + y = 10
20x + 22.5y = 217.5
=> 20(10 - y) + 22.5y = 217.5
=> 2.5y = 17.5
=> y = 7 (Number or gifts cost 22.5)
=> x = 10 - 7 = 3 (Number or gifts cost 20)
Hope this helps!
:)
Answer:
94 pound of type A
Step-by-step explanation:
Answer:
0.02m/s
Step-by-step explanation:
s = 1 m
t = 45 sec
v = s/t = 1/45
= 0.02m/s
To solve this problem you must apply the following proccedure:
1. <span>You have a total of 21 coins, all nickels and dimes. Then:
x:nickels=5 cents
y: dimes=10 cents
x+y=21
2. You have that the total value is $1.70. Then:
5x+10y=170
3. The system of equation is:
x+y=21 (i)
5x+10y=170 (ii)
4. You have:
x+y=21
x=21-y
5(21-y)+10y=170
105-5y+10y=170
y=13 dimes
x+13=21
x=8 nickels</span>
Answer:
Total hour Talia spend at math camp = 100 hour
Step-by-step explanation:
Given:
Number of days = 5 days
Per hour attended = 5/6 per hour
Find:
Total hour Talia spend at math camp
Computation:
Total number of hour per day = 24 hour
Total hour Talia spend at math camp = Number of days x Per hour attended x
Total number of hour per day
Total hour Talia spend at math camp = 5 x 5/6 x 24
Total hour Talia spend at math camp = 5 x 5 x 4
Total hour Talia spend at math camp = 25 x 4
Total hour Talia spend at math camp = 100 hour
