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3 years ago

Can someone help me with these math problems

Mathematics

2 answers:

LiRa [457]3 years ago

8 0

The first one is 40 pie

WITCHER [35]3 years ago

4 0

The second one is 1,456 pie

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Five sixths of Forty two

Maslowich

Hello,

Five sixths of forty two is = 35.

7 0

3 years ago

Solve the system by substitution y=x-8 y=2x-14

marishachu [46]

Answer:

x = 6

y = -2

Step-by-step explanation:

6 - 8 = -2

2 x 6 = 12 - 14 = -2

7 0

3 years ago

Read 2 more answers

Keeven uses 78 feet of fence to make a rectangle pan for his pet rabbit. The length of the pin is 20 feet.What is the width of t

jeyben [28]

Answer:

19 ft

Step-by-step explanation:

The perimeter of a rectangle is given by ...

P = 2(L +W)

Filling in the given values, we have ...

78 = 2(20 +W)

39 = 20 +W . . . . . divide by 2

19 = W . . . . . . . . subtract 20

The width of the rectangular pen is 19 feet.

3 0

3 years ago

Please help!!! Please hellp me i do not know the answr to this question.

Alchen [17]

Answer:

77.7

Step-by-step explanation:

First all the angles add up to 360°. You would subtract 180 from the 360 because of the 2 right angles. That leaves you with 180. Then 180-102.3 to get 77.7°, your answer.

3 0

3 years ago

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When an object is droppednbsp on a certain earth dash like planet comma on a certain earth-like planet, the distance it falls in

ANTONII [103]

Answer:

(a) $s(44) = 3.52*10^{6}ft$

(b) $v(44) = 10*x^{5} ft/s$

Step-by-step explanation:

$s(t) = 1818t^{2}$

(a) when t = 44sec

$s(44) = 1818(44^{2}) = 1818(1936)\\ \\s(44) = 3519648ft$

s(44) ≅ $3520000=3.52*10^{6}ft$

(b) How fast the hammer is traveling i.e. the speed of the hammer.

To find speed, we differentiate the distance s(t) with respect to time, t

$speed,v=\frac{ds(t)}{dt}=\frac{d}{dt}(1818t^{2}) \\\\v = 1818*2t^{2-1}= 1818*2t\\ \\v = 3636t$

at t = 44sec,

$v = 3636*44=159984ft/s$

$v$ ≅ $160000ft/s = 1.6*10^{5}ft/s$

(c) The hammer's acceleration can be obtained by differentiating the speed v(t) with respect to time, t

$acceleration, a = \frac{dv}{dt}=\frac{d}{dt}(3636t)\\ \\a = 3636*1= 3636\\\\a = 3636ft/s^{2}$

There's no need to substitute t = 44sec because the acceleration is independent of time.

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3 years ago