Answer:
h = 2.7 m
Step-by-step explanation:
ΔADE and ΔABC are similar, hence ratios of corresponding sides are equal
DE / BC = AD / AB, that is
h / 0.9 = 18 / 6 ( cross- multiply )
6h = 16.2 ( divide both sides by 6 )
h = 2.7
Answer:
The answer is 408
Explanation:
20% of 510 is 102 and 510 - 102 is 408
Answer:

Step-by-step explanation:
Given:
Number of feathers = 
Number of caps = 
Number of feathers in each cap = 3
Now, solving by setting up a proportion.
1 cap has 3 feathers. 'c' caps has 'f' feathers.
This gives,

Solving by cross multiplication, we get:

Therefore, the equation representing the number of feathers 'f' Erica needs to make 'c' caps is given as:

Supplementary angles add to 180.
Let's call one angle x and the other (x + 60).
x + (x + 60) = 180
2x + 60 = 180
2x = 120
x = 60
So one angle is 60 degrees, and the other is 120 degrees.