Answer:
multiply the first equation by -2, then add them
Step-by-step explanation:
7x+4y=-4 *-2 7x+4y=-4 *-2 = -14x-8y=8
5x+8y=28
-14x-8y=8 x=-4, y=6
-9x=36
x=-4
7(-4)+4y=-4
-28+4y=-4
4y=24
y=6
Point X location is at 76/100=0.76
the answer is the option C) 0.76
Hector = 2s or h/2
Sister = s
Equation: h/2 = s
Substitution: (20)/2 = s
10 = s
Hector’s sister found 10 seashells.
I think it is C
Hope this helped
Answer:
1) Angles 1 and 4, 2 and 3, 5 and 8, 6 and 7.
2) angles 3 and 6, 4 and 5.
3) angles 1 and 5, 2 and 6, 3 and 7, 4 and 8.
Step-by-step explanation: