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3 years ago

7

En una prensa hidráulica, el pistón pequeño tiene un diámetro de 12 cm y el pistón grande tiene un diámetro de 3 m ¿Qué fuerza s

e requiere aplicar en el pistón pequeño para levantar un peso de 7848 N con el pistón grande?

1 answer:

Licemer1 [7]3 years ago

3 0

Answer:

i dont know what is that language

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lim x rightarrow 0 1 - cos ( x2 ) / 1 - cosx The limit has to be evaluated without using l'Hospital'sRule.

zaharov [31]

Answer with Step-by-step explanation:

Given

$f(x)=\frac{1-cos(2x)}{1-cos(x)}\\\\\lim_{x \rightarrow 0}f(x)=\lim_{x\rightarrow 0}(\frac{1-(cos^2{x}-sin^2{x})}{1-cos(x)})\\\\(\because cos(2x)=cos^2x-sin^2x)\\\\\lim_{x \rightarrow 0}f(x)=\lim_{x\rightarrow 0}(\frac{1-cos^2x}{1-cos(x)}+\frac{sin^2x}{1-cosx})\\\\=\lim_{x\rightarrow 0}(\frac{(1-cosx)(1+cosx)}{1-cosx}+\frac{sin^2x}{1-cosx})\\\\=\lim_{x\rightarrow 0}((1+cosx)+\frac{sin^2x}{1-cosx})\\\\\therefore \lim_{x \rightarrow 0}f(x)=1$

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3 years ago

Change the decimal to a fraction and reduce .62

Len [333]

Answer:

31/50

Step-by-step explanation:

0.62 = 62/100 = 31/50

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3 years ago

kylie has 80% of the total points possible in her science class. if 350 points are possible, how many points does kylie have?

enyata [817]

Answer:

280

Step-by-step explanation:

<u>Change percentage into decimal:</u>

80% = 0.80

<u>Find 80% of 350:</u>

350 x 0.80 = 280

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3 years ago

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The smaller of two similar rectangles has dimensions 4 and 6. Find the dimensions of the larger rectangle if the ratio of the pe

BlackZzzverrR [31]

Answer:6 by 9

I was stuck on thus question too for a while but then I went back and figured everything.

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3 years ago

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a group of 3 people are sharing chocolates each person wants 8 chocolates and each box has 6 chocolates

Shtirlitz [24]

4 boxes of chocolates are needed by the group.

If a group of 3 people are together, needing 8 chocolates each. This means that the total number of chocolates needed is 8 × 3 = 24.

Again, we are told that each box contains 6 chocolates. This means that to get the number of boxes needed, we have to divide the total number of chocolates needed by the number of chocolates per box.

Essentially, 24/6 = 4 boxes of chocolates

for more see brainly.com/question/21416852

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3 years ago