Let M = marker cost
Let P = pencil cost
3 markers and 2 pencils cost 1.80 ==> 3M + 2P = 1.80
4 markers and 6 pencils cost 2.90 ==> 4M + 6P = 2.90
Multiply the first equation by (-3) and add it to the second equation
-9M - 6P = -5.40
4M + 6P = 2.90
-5M = -2.50
M = 0.50
Plug this value for M into the 1st equation and solve for P
3*(0.50) + 2P = 1.80
1.50 + 2P = 1.80
2P = 0.30
P = 0.15
So a marker costs 50 cents and a pencil costs 15 cents
7/5y. you add the 2/5y to the 5/5y and get 7/5y
Answer:799
Step-by-step explanation: all you have to do is add all the the numbers up and you’ll get 799
Answer:
3⅘ lb
Step-by-step explanation:
(a) <em>Amount eaten</em>
Eaten = 10⅖ + 10⅘
Think of pounds as pies. Each pie has 5 slices.
10⅖ pies = 10 pies + 2 slices = 50 slices + 2 slices = 52 slices
10⅘ pies = 10 pies + 2 slices = 50 slices + 4 slices = 54 slices
Eaten = 52 slices + 54 slices = 106 slices
(b) <em>Amount remaining</em>
Remaining = Original – Eaten
Original = 25 pies = 125 slices
Eaten = 106 slices
Remaining = 125 slices -106 slices
Remaining = 19 slices Convert slices to pies
Remaining = 15 slices + 4 slices
Remaining = 3 pies + 4 slices Convert to mixed fraction
Remaining = 3⅘ pies Convert pies to pounds
Remaining dog food = 3⅘ lb
Answer:
Mean=9.75
Median = 9.5
Mode = 8,9,10,12
Range = 6
Step-by-step explanation:
Arrange number in ascending order;
6,7,8,8,9,9,10,10,11,12,12,15
Mean = sum of terms/number of terms
=(6+7+8+8+9+9+10+10+11+12+12+15)/12
=117/12
=9.75
Median = middle number in a list; since we have two numbers we add them together and divide by 2
= (9+10)/2
= 19/2
=9.5
Mode = 8,9,10,12 (multimodal) this is when there are more than one mode
Range = highest number - lowest number
=15-9
=6
