Answer:
isosceles triangle
Step-by-step explanation:
An isosceles triangle has 2 congruent sides
The triangle described here has 2 congruent sides of 8 cm
The triangle is isosceles
1/u = 1/f -1/v
1/v = 1/u + 1/f
Answer:
There are 111 blue bags
Step-by-step explanation:
Let
x ----> the number of black bags
y ---> the number of blue bags
we know that
isolate the variable y
-----> equation A
----> equation B
substitute equation B in equation A
therefore
There are 111 blue bags
The ratio is 4:5
Divide both terms by 4
16/4 =4
20/4=5