Since we know the triangles are similar, then just use proportions from the corresponding sides, check the picture below.
Answer:
3/8
Step-by-step explanation:
8/8-5/8= 3/8
To factorise it start with putting the xs in brackets.
(x )(x )
Then you must find 2 numbers which multiply to +81 and sum to -18.
81 is the product of 9×9 or -9×-9.
9+9=+18
-9+-9=-18
So they two numbers must be -9.
So factorised it is (x-9)(x-9) or (x-9)^2
Answer:
- 7 faces
- 15 edges
- 10 vertices
Step-by-step explanation:
This is a counting problem. As with many counting problems, it is helpful to adopt a strategy that helps ensure you count everything only once.
__
<h3>Faces</h3>
There are two pentagonal faces and 5 rectangular faces for a total of ...
7 faces
__
<h3>Edges</h3>
There are 5 edges around each of the pentagonal faces, and 5 edges connecting the top face to the bottom faces, for a total of ...
15 edges
__
<h3>Vertices</h3>
There are 5 vertices on the top face, and 5 on the bottom face, for a total of ...
10 vertices
Answer:
D
Step-by-step explanation:
Multiply the numerators together to get the overall numerator and multiply the denominators together to get the overall denominator. I hope this helps!
