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3 years ago

Write the polynomial which represents the perimeter of a triangle whose sides are represented

Mathematics

1 answer:

denis-greek [22]3 years ago

4 0

Answer:

The polynomial is 10x^2 + 10x -2

Step-by-step explanation:

To get the polynomial which represents the perimeter, what we need to do is to add up all

these values. We use the formula for finding the perimeter of a triangle and that involves adding up all the three sides. That would be;

2x^2 + 3x + 5x^2 -1 + 3x^2 + 7x -1

10x^2 + 3x -1 + 7x -1

10x^2 + 10x -2

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The area of a circle is increasing at the rate of pi cm^(2)/min. At what rate is the radius increasing when the area is 4pi cm^(

Vikentia [17]

This problem deals the rate of change.
For the formula of the area of a circle, we differentiate both sides with respect to time t.
(A = πr^2) d/dt
dA/dt = 2πr (dr/dt)

Since we don't know yet the radius r, the area of a circle is given.
A = πr^2
r^2 = A/π = 4π/π
r^2 = 4
r = 2 cm

Therefore, the rate of the radius is
dA/dt = 2πr (dr/dt)
dr/dt = (dA/dt)/(2πr)
dr/dt = π/(2π*2)
dr/dt = 0.25 cm/min

Hope this helps.

3 0

3 years ago

An auditorium has 50 rows of seats. The first row has 20 seats, the second row has 21 seats, the third row has 22 seats, and so

Vikentia [17]

Answer:

1050

Step-by-step explanation:

I'm pretty positive it would be 1050 by multiplying 50 and 20 and adding 50

4 0

3 years ago

Find the solution to the following system using substitution or elimination:

Sveta_85 [38]

C. (1, 10)

10=3(1)+7

10=3+7

10=10

6 0

3 years ago

Help ASAP plz this a live quiz

g100num [7]

Answer:

$4. \: A$

Step-by-step explanation:

I believe A is non-linear

5 0

3 years ago

Directions: Indicate the FOIL for the problem:<br><br>(3x-2)(2x-3) First<br><br>

MrRissso [65]

Answer:

$6x^{2} +9x -4x+6\\$

Step-by-step explanation:

First you take 3x times 2x since its the first of both equations, which will give you 6x squared.

Then take the outer ones of both problems which is 3x times 3 which is 9x.

Then the inner, -2 times 2x which is -4x

Then the last of both individual problems which is -2 times -3 which is positive 6.

8 0

2 years ago