All categories

3 years ago

PLZZ ASAP THIS IS MY LAST QUESTION ON THE QUIZ

Mathematics

1 answer:

Nikitich [7]3 years ago

3 0

634.28m
C=pir^2
11^2 = 121 (3.14) = 379.94
9^2 = 81 (3.14) = 254.34
add together = 634.28

You might be interested in

Help Me Please!!!!!!!!!!!

DaniilM [7]

Answer:

Have a good day

Step-by-step explanation: and so have a good day

6 0

2 years ago

Which expressions are equivalent

stich3 [128]

Answer:C- 3x - 7y and 3y - 7x

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

A ladder 10 feet long rests against a vertical wall. Initially, the top of the ladder is 8 feet above the ground. If the top of

lora16 [44]

Step-by-step explanation:

Let vertical height of ladder from ground be y and

horizontal distance of the base of the ladder from the wall be x respectively.

Length of the ladder = l (constant) = 10 ft

Using Pythagoras theorem:

${l}^{2} = {y}^{2} + {x}^{2}$

Differentiate both sides w.r.t time

$0 = 2y \frac{dy}{dt} + 2x \frac{dx}{dt}$

$y \frac{dy}{dt} + x \frac{dx}{dt} = 0$

We know that (After 1 sec, y = 6 ft and x = 8 ft ; dy/dt = 2 ft/sec)

$6\times 2 + 8\frac{dx}{dt} = 0$

$\frac{dx}{dt} = - 1.5 ft \: per \: sec$

( Ignore - ive sign)

Therefore, bottom of the ladder is sliding away from the wall at a speed of 1.5 ft/sec one second after the ladder starts sliding.

8 0

3 years ago

Plz answer hurry. 20 points for right answer

lapo4ka [179]

Did You Figure This Out I Need Help Too. Lol

3 0

2 years ago

Read 2 more answers

Given that f(x) = 6x +1, find (f of)(-2). (f of)(-2) | (Simplify your answer.)

irakobra [83]

Answer:

(f of)(-2) = -65

Step-by-step explanation:

Set up (f of)(-2)

(f o f)(-2) = f(f(-2))

Once you get (fof)(-2) you then have f(#)

f(6(-2) + 1) = f(-11)

6(-11) + 1 = -66 + 1 = -65

8 0

3 years ago