Answer:

Step-by-step explanation:
Let
h-----> the high of the balloon
we know that
In the right triangle of the figure



It can be b), c) and d).
b) because it says the sum of three angles — this one’s the most obvious, as we can look at x, y and z as three different angles that sum up to 180.
c) works because 3a is, in essence, a + a + a, which we can look at as the sum of 3 angles that adds up to 180.
d) because we already have 2 angles, and “a” is just an unknown angle. It all sums up to 180.
a) and e) dont work because they involve multiplying (x*y*z and x*x*x) and the problem says we need to look for the sum of angles, not the product. :)
To solve for y, you need to isolate/get the variable "y" by itself in the inequality:
x + 8y < 16 Subtract x on both sides
x - x + 8y < 16 - x
8y < 16 - x Divide 8 on both sides to get "y" by itself


Answer:
412 cm2
Step-by-step explanation: