It's B.) The student’s answer is not reasonable. Estimation: 170 + 90 = 260
Answer:
H or G. mostly G.
Step-wby-step explanation:
I think I am not sure. hope this helps.
Answer:
It cost $204 (with the tip)
Step-by-step explanation:
You got $30 off, leaving you with $170 to pay.
15% into 0.15
200x0.15= 30
200-30= 170
The tip was $34.
20% into 0.20
170x0.20=34
In total, with the tip it cost you $204
Answer:
yes
Step-by-step explanation:
First we'll show this is a right triangle by the Pythagorean Theorem:
Since we have a right triangle, by the (converse to the) Pythagorean Theorem. We also see it's isosceles, AB=AC.
That's the end of the homework but I'll go on a bit.
Another way to show perpendicularity, essentially the same as the other two, is by a zero as the dot product of the sides as vectors, differences between vertices.
Vector AB = B - A = (3,2)
Vector AC = C - A = (-2, 3)
AB · AC = 3(-2) + 2(3) = 0
A zero dot product means
AB ⊥ AC