The boys should use 140% of pure lemon juice mi to get <span>a final mixture of 20 gallons at 40% lemon juice:
if 20:70 the 40:70 - it is more like ration and proportion.
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To multiply decimals pretend there is no decimal for example
.165*74 = 12210; then however many digits (not counting zeros) is after the decimal added together (from both numbers) so 3 so 12.21 is the answer
10x^2 - 25 = x^2
Take the square root of each side.

x = 10x - 5i
Answer:
following are the solution to the given points:
Step-by-step explanation:
In point a:


calculating unit vector:

the point Q is at a distance h from P(6,6) Here, h=0.1

the value of Q= (5.92928 ,6.07071 )
In point b:
Calculating the directional derivative of
at P in the direction of 



In point C:
Computing the directional derivative using the partial derivatives of f.
