I don't understand how to do this math problem, help me?

Answers

Answer 1

Answer: Hello,
After a night,

f(x,y)=0 ==>df=0==>@f/@x*dx+@f/@y*dy=0
==>dy/dx=-(@f/@x)/(@f/@y) There was a mistake (in my memory)

@f/@x=6xy²+20x^4

@f/@y=5y^4+6x²y

==>dy/dx=-(6xy²+20x^3)/(5y^4+6x²y)
for x=-1 and y=2 dy/dx= -(6*(-1)*4+20*(-1)^3)/(5*2^4+6*(-1)²*2)
=44/92=11/23

or

5y^4*dy/dx+6xy²+6x²ydy/dx+20x^3=0
==>dy/dx*(5y^4+6x²y)=-6xy²-20x^3

==>dy/dx= -(6xy²+20x^3)/(5y^4+6x²y)
==>11/23

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Simplify the expression. 3 square root 5/64

Answers

$3\sqrt(5)/(64)=3(\sqrt5)/(√(64))=(3\sqrt5)/(8)$

X + 27 = 93
what does x =

Answers

Answer:

x=66

hope this helped :)

So if x + 27 = 93 just subtract 93 from 27 and you will get 76 which is x

Jada has a meal in a restaurant. She adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00.c) They actually pay $52.99. The additional $7 is a tip for the server. What percentage of the subtotal is the tip?

Answers

Answer: See explanation

Step-by-step explanation:

Your question wasn't well written but I saw an identical question so let me help out.

a. Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. When the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax?

b. They actually pay $52.99. The additional $7 is a tip for the server. What percentage of the subtotal is the tip?

a. Subtotal = $42.00

Tax = $3.99

Percentage of subtotal that is sales tax will be:

= Sales tax/Subtotal × 100

= 3.99/42.00 × 100

= 9.5%

b. Tip = $7

Sub total = $42

The percentage of the subtotal that is the tip will be:

= Tip/Sub total × 100

= 7/42 × 100

= 16.67%

In 15 words or fewer, determine the number of games in which Fairlawn High scored between 15 and 36 points.

Answers

Final answer:

The number of games in which Fairlawn High scored between 15 and 36 points is 22.

Explanation:

To determine the number of games in which Fairlawn High scored between 15 and 36 points, we need to find the range of scores. If the range is inclusive of both endpoints, we subtract the lower score from the higher score and add 1. So the number of games is 36 - 15 + 1 = 22.

Learn more about Number of games with a score range here:

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What is the height of this cone?

Answers

Answer:

height is = 3/2 ft

Step-by-step explanation:

a cones volume can be represented by 1/3(h)(pi)(r^2)

we must go backwards to find this question out

if the diameter is 2/3 then the radius is 1/3

then you must square that

that is 1/3 * 1/3 which is 1/9

1/9(1/3)(pi)(h) is 1/18(pi)

we can remove pi from both sides and multiply the 1/9 and the 1/3

1/27(h) = 1/18

we must find the lcm or least common multiple to figure this out

the lcm is 54

1/27 is essentially 2/54 and 1/18 is 3/54

2/54(h) = 3/54

we can multiply each side by 54

2h = 3

divide 2 on both sides

h is 3/2

It rained 0.6 inches on Monday on Tuesday it rained 0.2 inches less than Monday how much did it rain on Tuesday?

Answers

If it is 0.2 inches less, just subtract.

0.6 - 0.2 = 0.4

Answer:

0.4

Step-by-step explanation: