Answer: D: Corresponding parts of congruent triangles are congruent
Step-by-step explanation:
If two triangle are congruent using postulate of theorems of congruence then their corresponding parts are congruent by CPCTC rule.
The CPCTC rule says that if two triangles are congruent then their each corresponding part whether angles or sides must be equal.
Here if triangle abc= def by side-side-side triangle congruence theorem,
then b=e [which is a corresponding part of both triangles] by Corresponding parts of congruent triangles are congruent.
First equation: x=-y+8
Second equation: on the picture
1: 7
2: Yes, 20 because it’s isolated from the rest of the points
(I don’t know the other ones, sorryyyyy)
You can use the quadratic formula with it which will be easier
or simple factoring
it will be (5x-11)(7x+4)
Eli will finish first.
Use 8/10 and 10/12. This represents how many spring rolls over how many minutes. Make your equations like this: 8/10 = 40/x and 10/12 = 40/x. Find x, which will give you the minutes it takes them to make 40 rolls.
You get x = 50 for the first one and x = 48 for the second. Nora makes 40 rolls in 50 minutes, and Eli makes 40 rolls in 48 minutes. Eli is faster.
Hope this helped! Please mark me brainliest!