-7 is the value of discriminant for this equation.
It has been proved that the 5 star vertices have their sum of angles as A + B + C + D + E = 180°
<h3>How to find the sum of angles of a polygon?</h3>
The adjoining star contains a regular pentagon. Thus;
Sum of interior angles of the pentagon = (5 - 2) * 180 = 540°
Thus;
Each interior angle of the pentagon = 540/5 = 108°
Thus, each exterior angle = 180 - 108 = 72°
Then measure of the angle at the vertex = 180 - 72 - 72 = 36°
Thus, each angle at the vertices of the star have an angle of 36°.
There are 5 star vertices and so;
Sum of angles of 5 star vertices = 5 * 36 = 180°
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Answer:
A
Step-by-step explanation:
he discount? Round the answer to two decimal places.
(b) A customer paid $16.99 for a shirt that normally sells for $19.99. What percent
discount did the customer receive? Round your answer to the nearest percent.
(c) A customer and a salesperson are arguing about a promotion and a coupon
applied after the promotional discount. The promotion is a 20% discount on all items
in the store. The coupon is an additional 10% off of the order. The customer claims
the 20% discount should be made before the 10% discount. The salesperson claims
Answer:
so x = 5 is not true statement
Step-by-step explanation:
well to prove x = 5 you need to get get alone or solve for x
3x = 10-5 --> 3x = 5
now you need to get x alone do this by dividing 3 by both sides
3x = 5 --> x = 5/3
x = 1.6
Answer:
2
Step-by-step explanation:
this is a 30-60-90 Δ and the ratio of the sides are 1 : 
: 2
1 / 2 = / x
cross-multiply: x = 2
