4 years ago

Helpppppppoppp!!! Hw

Mathematics

1 answer:

Mice21 [21]4 years ago

8 0

Answer:

13.765

17.09

Step-by-step explanation:

You might be interested in

Four times a number added to 3 times a larger number is 31. Seven subtracted from the larger number is equal to twice the

wlad13 [49]

Answer:

The complete options are missing.

Step-by-step explanation:

The system of equations for this problem is:

4x + 3y = 31

y - 7 = 2x

Best Regards!

7 0

3 years ago

What is the elasped time of 7:41 pm and 8:50 pm

hram777 [196]

Answer:

about 1 hour and 9 minutes or 69 minutes

Step-by-step explanation:

I always add the hour first if I can (from 7:41 to now 8:41) and then add however many minutes are left (9 minutes).

5 0

3 years ago

Which of the following is a fifth root of the given complex number.

Artist 52 [7]

Answer:

pi x 3 4.5 hi and how to go and

6 0

3 years ago

A particle moves on the hyperbola xy=18 for time t≥0 seconds. At a certain instant, y=6 and dydt=8. What is x that this instant?

professor190 [17]

Answer:

The value of x at this instant is 3.

Step-by-step explanation:

Let $x\cdot y = 18$ , we get an additional equation by implicit differentiation:

$x\cdot \frac{dy}{dt}+y\cdot \frac{dx}{dt} = 0$ (1)

From the first equation we find that:

$x = \frac{18}{y}$ (2)

By applying (2) in (1), we get the resulting expression:

$\frac{18}{y}\cdot \frac{dy}{dt}+y\cdot \frac{dx}{dt} = 0$ (3)

$y\cdot \frac{dx}{dt}=-\frac{18}{y}\cdot \frac{dy}{dt}$

$\frac{dx}{dt} = -\frac{18}{y^{2}} \cdot \frac{dy}{dt}$

If we know that $y = 6$ and $\frac{dy}{dt} = 8$ , then the first derivative of x in time is:

$\frac{dx}{dt} = -\frac{18}{6^{2}} \cdot (8)$

$\frac{dx}{dt} = -4$

From (1) we determine the value of x at this instant:

$x\cdot \frac{dy}{dt} = -y\cdot \frac{dx}{dt}$

$x = -y\cdot \left(\frac{\frac{dx}{dt} }{\frac{dy}{dt} } \right)$

$x = -6\cdot \left(\frac{-4}{8} \right)$

$x = 3$

The value of x at this instant is 3.

4 0

3 years ago

The perimeter of parallelogram id 72 meters. The width of the parallelogram is 4 meters less than its length. Find the length an

Readme [11.4K]

Width=19

Length=17

72-4=68/2=34/2= 17 length

72-4=68+4=38/2=19 width

3 0

3 years ago