Answer:
Triangle DEF is similar the XYZ
Step-by-step explanation:
Because if you divide 10 by 18, you get 0.555555...
If you divide 14 by 25.2, you get 0.5555555.....
Personally, I never bothered learning the formula.
When I run into a problem like this, I look at it this way:
(I learned this method from my high school math teacher,
Mr. H. Carlisle Taylor, in 1956. It not only works, but I can
even understand it !)
The first object can be any one of the 8 . For each of those ...
The 2nd object can be any one of the other 7. For each of those ...
The 3rd object can be any one of the other 6 . For each of those ...
The 4th object can be any one of the other 5 . For each of those ...
The 5th object can be any one of the other 4 . For each of those ...
The 6th object can be any one of the other 3 . For each of those ...
The 7th object can be any one of the other 2 . For each of those ...
The 8th object has to be the 1 that's left.
Total number of possible ways to line them up is
(8 x 7 x 6 x 5 x 4 x 3 x 2 x 1) = 40,320 ways .
Answer:
the answer is
x2 - 7 =0
Step-by-step explanation:
no explination
Answer:
x = 8, y = 3
Step-by-step explanation:
Equating corresponding x and y coordinates , then
- y = - x + 5 ( multiply through by - 1 )
y = x - 5 → (1)
2x - 5y = 1 → (2)
Substitute y = x - 5 into (2)
2x - 5(x - 5) = 1 ← distribute and simplify left side
2x - 5x + 25 = 1
- 3x + 25 = 1 ( subtract 25 from both sides )
- 3x = - 24 ( divide both sides by - 3 )
x = 8
Substitute x = 8 into (1) for corresponding value of y
y = 8 - 5 = 3
