Answer:
For the triangle all of whose sides have length 3, a proper fold through any vertex can serve as a line of symmetry and so there are three possible lines. The triangle with side lengths 2,4,5 cannot have any lines of symmetry as the side lengths are all different.
Step-by-step explanation:
Given two points; A(x₁,y₁) and B(x₂,y₂), the slope "m" is:
m=(y₂-y₁)/(x₂-x₁) or m=(y₁-y₂)/(x₁-x₂)
Therefore:
(-9,5)
(-7,10)
m=(10-5) / (-7-(-9))=5/(-7+9)=5/2
Answer: D. 5/2
Answer: y
=
x
2
+
93
x
−
288
Your Welcome
Answer:
<em>120 minutes or 2 hours</em>
Step-by-step explanation:
<u>Proportions</u>
The method to solve the problem is to compute how many cans produce each machine per minute, then add them to obtain the total cans produced by both. Finally, we compute the time to produce 4200 cans at that level of production.
The newer machine produces 4200 cans in 210 minutes, it means it produces
=20 cans per minute
The older machine needs 280 minutes to produce the same 4200 cans, to it produces
= 15 cans per minute
Together, they produce 20+15=35 cans per minute. Thus, to produce 4200 cans, they need
= 120 minutes or 2 hours
Answer:
x=4 y=7
Step-by-step explanation:
When multiplying 3x by -2, you get -6x. -6x and 6x cross out. You're left with -2y=-2 and -2y=10.