Sec^2 x - 1 = tan^2x
Proof:
Sec^2x = 1+ tan^2x
1/cos^2x = 1 + sin^2x/cos^2x
<span>1/cos^2x - sin^2x/cos^2x = 1
</span>Using common denominator:
(1-sin^2x)/cos^2x = 1
sin^2x + cos^2 x = 1
cos^2 x = 1 - sin^2x
Substituting :
cos^2x/<span>cos^2x = 1
</span>1 = 1
Left hand side = right hand side
a) The average arithmetic mean is calculated by adding all of the values and then dividing the sum by the total number of values.
Which is 200.3.
b) Assume that the new average mean is 201, then
Solve for x.
Divide by 2604 to solve for x.
So the height of the new player is 175 cm.
Answer:
x = 21
Step-by-step explanation:
(x+6)^1/3 - 5= -2
add 5 to both sides of the equation:
(x+6)^1/3 = 3
cube both sides of the equation:
x + 6 = 27
subtract 6 from each side:
Answer:
(D). 6.
Step-by-step explanation:
The number of parts = 1 + 10 = 11.
So 10/11 of the alloy is copper and 1/11 is aluminium.
So the answer is 1/11 * 66
= 66/11= 6 pound,s
-5 = 6g - 7a multiply by -1
-5 = -6g+7a
