One hamburger and one coke cost $3.20. Three hamburgers and one coke cost $8.00. Find the cost of one hamburger.
2 answers:
Answer:
$0.80
Step-by-step explanation:
-3 (1x + 1y = 3.2)
3x + 1y = 8
----------------
-3x - 3y = -9.6
+
3x + 1 y = 8
-------------------
0x -2y = -1.6
÷ -2
-----------------
y = 0.8
one hamburger costs $0.80
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Here is the work and the answers for your problem! Hope it helps and just message me if you don’t understand
r = 25+b
n = 3b
n+r+b=435
3b+25+b+b=435
5b+25=435
5b=210
b=42
r = 25+42 = 67
n = 3(42) = 126
The point where the lines intersect is the point that satisfies both equations.
It is (1, 5), selection C.
Answer:
V = 8 cm³
Step-by-step explanation:
the volume (V) of a cube is calculated as
V = s³ ( s is the side length )
here s = 2 , then
V = 2³ = 8 cm³
It's a trapezoid
- Base=15+5=20cm
- Another side=15cm
- Height=12cm
Now
Area:-
- 1/2(Sum of parallel sides)(Height)
- 1/2(15+20)(12)
- 6(35)
- 210cm^2
