52 received a pencil
17 received a notebook
5 received a t shirt
A. solve for 1 variable
let's solve for x in 2nd equation
add 2y to both sides
x=2y+4
sub 2y+4 for x in other equation
3(2y+4)+y=5
6y+12+y=5
7y+12=5
minu12 both sides
7y=-7
divide 7
y=-1
sub back
x=2y+4
x=2(-1)+4
x=-2+4
x=2
(2,-1)
B. eliminate
eliminate y's
multiply first equation by 2 and add to first
6x+2y=10
<u>x-2y=4 +</u>
7x+0y=14
7x=14
divide by 7
x=2
sub back
x-2y=4
2-2y=4
minus 2
-2y=2
divide -2
y=-1
(2,-1)
(2,-1) is answer
[ Answer ]
[ Explanation ]
- Formula For Area Of Trapezoid:
-----------------------------------------
A = 10
B = 18
H = 6
- Plug Numbers Into Equation:
10 + 18 = 28
28 ÷ 2 = 14
14 · 6 = 84
84
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Answer: The answer is 62.32
Step-by-step explanation:
See attachment
Where are the graphs? a function is when every input is paired with exactly one output(every x value must have exactly 1 y value). the vertical line test helps determine a function, a vertical line can’t intersect a graph at more then one point, if it does intersect in more then 1 point then it’s not a function
