We call A<span>(–3, 5), B(4, –1), and C(4, y), the triangle ABC.
We have the coordinates of three vectors: AB(7, -6), BC(0; y+1), and AC(7, y-5)
Cause this triangle can be right at A, B or C, we have three cases:
+ Right at A: AB.AC=0 or 7x7+(-6)x(y-5)=0
and we have 49-6y+30=0 or y=79/6
</span>+ Right at B: AB.BC=0 or 7x0+(-6)x(y+1)=0
and we have 0-6y-6=0 or y=-1
Right at C: BC.AC=0 or 0x7+(y+1)x(y-5)=0
and we have (y+1)x(y-5)=0 or y=-1 or y=5
<span>
Then, we have 3 values of y.
</span>
Answer:
5x-85=10
Step-by-step explanation:
"85 less" indicates subtraction, "product of 5 and x" is multiplication. This means its 5x-85. The whole thing is equal to 10, so the equation is 5x-85=10
One solution
Hope it helped you
Answer:
C
Step-by-step explanation:
5(4) over 6(4) makes more sense than the others do