You can set up a system of equations for this problem. x= number of coach tickets and y = number of first class tickets.
$210x + $1200y = $10,230 (cost of coach ticket plus cost of first class tickets is total budget)
x + y = 11 (number of coach tickets plus number of first class tickets is total number of people)
Solve the second equation for y to get y = 11 - x, then plug that into the first equation and solve for x:
$210x + $1200(11 - x) = $10,230
$210x + $13,200 - $1200x = $10,230
-$990x + $13,200 = $10,230
-$990x = $2,970
x = 3
Sarah bought x = 3 coach tickets. Plug that into the second equation and solve for y:
3 + y = 11
y = 8
Sarah bought y = 8 first class tickets.
Answer:
r =
Step-by-step explanation:
r=30√12,−30√12
Answer:
HUH WHAT DOES THIS MEAN?
Step-by-step explanation:
Answer:
5 children
Step-by-step explanation:
7 adults = $70
5 children = $25
total= 12 people
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therefore 5 children went
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Answer:
Step-by-step explanation:
We have the square and four equilateral triangles.
The formula of an area of a squre:
a - length of side
The formula of an area of an equilateral triangle:
a - length of side
Clculate the areas:
SQURE:
TRIANGLE:
The SURFACE AREA of a square pyramid:
Put x = 5:
