Discount;
66 * 0.4 = 26.40
66 - 26.4 = 39.60
Tax;
66 * 0.05 = 3.30
Total Price:
39.60 + 3.30 = 42.90
$42.90
Answer:
see explanation
Step-by-step explanation:
Using the trigonometric identity
sin²x + cos²x = 1 , then
sin²x = 1 - cos²x and cos²x = 1 - sin²x
Consider the left side
← expand numerator/denominator using FOIL
= 
= 
= 
= 
= cot²A = right side , thus proven
Answer:
Prime numbes
Step-by-step explanation:
Numbers whose only factors are 1 and itself are called prime numbers.
Such numbers have only two factors.
Examples are: 2, 3, 5, 7 ,9... etc.
Answer:
D) 96 is closest
Step-by-step explanation:
12x7=84
1/2(8)(4)=16
84+16=100
A = 30
B = 45
C = 160
D = 96
Answer:
x = 1.4 (or 21/15)
Step-by-step explanation:
12x - 15 = 6 - 3x
+3x +3x
-----------------------
15x - 15 = 6
+15 +15
-----------------------
15x = 21
/15 /15
----------------------
x = 21/15 or
x = 1.4
