Answer:
$45.84
Step-by-step explanation:
if you buy an item at $65.49 with 30% discount, you will pay 65.49 - 19.647 = 45.84 dollars.
hope this helps
Answer: (x^2+1) • (x^2-10)
Step-by-step explanation:
1. Write “-9x^2” as a difference
X^2-10x^2
2. Factor out x^2
X^2 (x^2+1)
3. Factor out -10
-10(x^2+1)
4. Factor out x^2+1 to get:
(X^2+1) (x^2-10)
This is done through the use of the unit circle.
Your first step is to convert the angle 11π / 2 to an angle between 0 and 2π, which is the range of angles on the unit circle.
This can be done by splitting the circle into sections of π / 2 and counting up 11 sections, or by simply recognizing the fact that 12π / 2 is the same as 6π, which is also the same as 2π. Therefore, we can conclude that 11π / 2 (π / 2 less) is the same angle as 3π / 2.
So we are really finding sin (3π / 2), which is -1 (the y-value of the coordinate at the angle 3π / 2).
Answer:
- A. 7·6 + 7·3
- B. 7·3 + 7·6
- C. 7·9
Step-by-step explanation:
The distributive property and the commutative property of addition both apply here.
Distributive property: a(b+c) = ab +ac
For a=7, b=6, c=3, this becomes ...
7(6+3) = 7·6 +7·3 . . . . . matches A
The commutative property of addition says ...
a + b = b + a
For a=7·6 and b=7·3, this becomes ...
7·6 + 7·3 = 7·3 + 7·6 . . . . . matches B
Of course, the expression can be partially evaluated:
7(6 +3) = 7·9 . . . . . matches C