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Pani-rosa [81]
2 years ago
9

83.49 x 1.48 to the nearest thousandth.

Mathematics
2 answers:
alexgriva [62]2 years ago
7 0

Answer:

123.565

Step-by-step explanation:

83.49 * 1.48 = 123.5652  Round to nearest thousands - > 123.565

allsm [11]2 years ago
6 0

Answer:

13.565

Step-by-step explanation:

83.49*1.48=123.5652

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Two-dimensional objects are measured
balandron [24]
It’s either length or area.
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3 years ago
A 40-m-long chain hangs vertically from a cylinder attached to a winch. Assume there is no friction in the system and the chain
daser333 [38]

Answer:

a) W₁ = 78400 [J]

b)Wt = 82320 [J]  

Step-by-step explanation:

a) W = ∫ f*dl      general expression for work

If we have a chain with density of 10 Kg/m, distributed weight would be

9.8 m/s² * 10 kg   = mg

Total length of th chain is 40 m, and the function of y at any time is

f(y) = (40 - y ) mg   where ( 40 - y ) is te length of chain to be winded

At the beggining we have to wind 40 meters   y = 0 at the end of the proccess  y = 40 and there is nothing to wind then:

f(y) = mg* (40 - y )

W₁ =  ∫f(y) * dy    ⇒ W₁ = ∫₀⁴⁰ mg* (40 - y ) dy  ⇒ W₁ = mg [ ∫₀⁴⁰ 40dy - ∫₀⁴⁰ ydy

W₁ = mg [ 40*y |₀⁴⁰   -  1/2 * y²  |₀⁴⁰    ⇒  W₁ = mg* [ 40*40 - 1/2 (40)² ]

W₁ = mg * [1/2]     W₁ = 10*9,8* ( 800 )

W₁ = 78400 [J]

b) Now we can calculate work to do if we have a 25 block and the chain is weightless

W₂ = ∫ mg* dy     ⇒    W₂  = ∫₀⁴⁰ mg*dy   ⇒    W₂  = mg y |₀⁴⁰

W₂ = mg* 40   = 10*9.8* 40  

W₂ = 3920 [J]

Total work

Wt = W₁  +  W₂        ⇒    Wt = 78400 + 3920

Wt = 82320 [J]

6 0
3 years ago
Find the value of x
devlian [24]
X=20
180=7x+x+20
-20.         -20
180=7x+x
180=8x
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x=20

5 0
3 years ago
The produce of 2 and the difference of a number and 1
faust18 [17]

Answer:

2*(n-1) represent the product of 2 and the difference of number and 1.

mark me brainlist plz.

5 0
2 years ago
Find the value of k so that the remainder is 1 when x^3+5x^2+kx-8 is divided by (x-3)<br> K=
Brut [27]

By the remainder theorem, the remainder upon dividing x^3+5x^2+kx-8 by x-3 is given by the value of this expression when <em>x</em> = 3 :

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27 + 45 + 3k - 8 = 1 \\\\ 3k = -63 \\\\ \boxed{k = -21}

5 0
2 years ago
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