Euler's formula for a polyhedron is given by:

Make E, the subject of the formula:

Put F = 20, V = 12, to obtain E,

Therefore, there are 30 edges
Answer:
The value of b = 1/36
As exponent decreases, each previous value is divided by 6
If the table was extended, the value of 6^-3 would be 1/216
Step-by-step explanation:
Given in the question a table containing power of 6
We will use negative rule of exponent to write the equivalent of negative power of 6
b^{-n}= 1 / b^{n}
we know that

so
= 1/6
and

So,

=

Answer:
Step-by-step explanation:
heyaaa,
<u><em>He earns:($7.50 per hour) x (4 hours) = $30</em></u>
thanx mark as brainlest.
A mathematical statement that two expressions are equal. SIMPLIFY. to write an expression in a simpler form. FORMULA. An <span>equation that shows a relationship among certain quantities</span>
Make a proportion.
Do base over height;

.

h is the height of the second triangle. Solve for h.
Cross multiply.
6h = 168
h = 28
The height of the second triangle is 28 cm.