If both Cody and Lisa play for t hours, then Cody pays a total of $(7 + t), while Lisa pays a total of $(1 + 3t). If they both pay the same amount P, then
7 + t = P
1 + 3t = P
Solve for t :
7 + t = 1 + 3t
t - 3t = 1 - 7
-2t = -6
t = 3
So Cody and Lisa each bowled for 3 hours, and they both ended up paying P = $10.
Answer:
true
Step-by-step explanation:
all equations in the form of y=mx+b is linear
Step-by-step explanation:
1. x = 1/2 or 3
2. x = 3 or 2
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Answer:
Part 1) The area of the structure is 
Part 2) The slab will contain
of cement
Step-by-step explanation:
Part 1) Find the area of the structure
we know that
The area of the structure is equal to the area of rectangle plus the area of semicircle
<u><em>Find the area of rectangle</em></u>
The area of rectangle is equal to

we have


substitute


<u><em>Find the area of semicircle</em></u>
The area of semicircle is

we have


substitute


<u><em>Find the area of the structure</em></u>
Adds the areas

Part 2) If the structure is 6 in thick, how many cubic feet of cement will the slab contain?
Remember that

Convert inches to feet

<u><em>Find the volume of the structure</em></u>
To obtain the volume , multiply the area by 0.5 ft (thick)
so

If you put them together, +2.5y and -2.5y neutralize themselves while 5x and 3x become 8x.
2.5y + 3x = 27
5x – 2.5y = 5
8x = 32
x = 4
2.5y + 3x4 = 27
2.5y + 12 = 27
2.5y = 27-12
2.5y = 15
y = 15/2.5
y = 6
X = 4
Y = 6