Answer:
x = 14.7
Step-by-step explanation:
Using the sine rule
Substitute the given values.
Rearrange the equation to get x on it's own.
x = 14.72246211
x = 14.7 (1dp)
Answer:x=90° and y=45
Step-by-step explanation:
Answer:18
Step-by-step explanation:
because 36 is divided by 2 equals 18cm
Answer:
The selling price that will maximize profit is $56.
Step-by-step explanation:
Given : It costs 12 dollars to manufacture and distribute a backpack. If the backpacks sell at x dollars each, the number sold, n, is given by
To find : The selling price that will maximize profit ?
Solution :
The cost price is $12.
The selling price is $x
Profit = SP-CP
Profit = x-12
The profit of n number is given by,
Substitute the value of n,
Derivate w.r.t x,
Put it to zero for critical point,
Derivate again w.r.t x, to determine maxima and minima,
It is a maximum point.
Therefore, the selling price that will maximize profit is $56.
Answer:
see explanation
Step-by-step explanation:
Using the trigonometric identity
sin²x + cos²x = 1
Consider the left side
2cos²A - 1 ← replace 1 by sin²A + cos²A
= 2cos²A - ( sin²A + cos²A)
= 2cos²A - sin²A - cos²A
= cos²A - sin²A = right side ⇒ verified