1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
LUCKY_DIMON [66]
3 years ago
6

If x^2 + xy = 20 and dx/dt = -4 when x = -5 and y = 1, what is dy/dt

Mathematics
1 answer:
SpyIntel [72]3 years ago
7 0

Answer:

3.2

Step-by-step explanation:

x² + xy = 20

Take the derivative with respect to time:

2x dx/dt + x dy/dt + y dx/dt = 20

(2x + y) dx/dt + x dy/dt = 20

Given x = -5, y = 1, and dx/dt = -4:

(2(-5) + 1) (-4) + (-5) dy/dt = 20

(-10 + 1) (-4) − 5 dy/dt = 20

36 − 5 dy/dt = 20

5 dy/dt = 16

dy/dt = 3.2

You might be interested in
Hey im back with this map i need help
Katena32 [7]

Answer:

m<5= 46 degrees

m<8= 134 degrees

Step-by-step explanation:

m<5: all you need to do is subtract 134 from 180

m<8: m<2 and m<8 have the same angle

7 0
3 years ago
Evaluate each function at the given value using the Remainder Theorem.
belka [17]

Answer: C

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
How do rigid motions affect a given figure?
12345 [234]
Can you post a picture about the question
3 0
3 years ago
If three pounds of coffee costs $22.56, what is the cost of 1
NeX [460]

Answer:

$7.52 = 7 dollars and 52 cents.

Step-by-step explanation:

Given that three pounds of coffee = $22.56

1 pound of coffee = $22.56/3

Thus, we would have:

\frac{22.56}{3} = 7.52.

A pound of coffee = $7.52

$7.52 = 7 dollars and 52 cents.

8 0
3 years ago
What is the equation of the line that passes through the point (–2,7) and has a slope of zero?
scZoUnD [109]

Answer:

y = 7

Step-by-step explanation:

Given:

x1 = -2

y1 = 7

slope (m) = 0

y - y1 = m ( x - x1 )

y - 7 = 0 ( x - (-2) )

y - 7 = 0 ( x + 2 )

y - 7 = 0

y = 7

4 0
2 years ago
Other questions:
  • Suppose you are climbing a hill whose shape is given by the equation z = 1300 − 0.005x2 − 0.01y2, where x, y, and z are measured
    13·1 answer
  • Help please. my sister cant figure this out
    6·1 answer
  • Factorise fully<br> 8 + 49
    6·2 answers
  • Use operations of decimal, fraction, and percent numbers to model the following scenarios. In your final answer, include only an
    5·2 answers
  • Choose as many answers as apply.
    7·2 answers
  • In right triangle ABC, altitude CD is drawn to its hypotenuse. Select all triangles which must be similar to triangle ABC.
    12·2 answers
  • the length of four insects are 0.02 inch, 1/8 inch 0.1 inch, and 2/3 inch. list the lengths in inches from least to greatest. PL
    7·1 answer
  • Which expression is equivalent to 4 + 3 (5 + ×)
    6·2 answers
  • Pls, help The temperature of a city changed by −24 degrees Celsius over a 6-week period. The temperature changed by the same amo
    11·1 answer
  • Si un gramo de chocolate vale$38.25¿cuánto costarán 750 gramos?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!