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Setler79 [48]
3 years ago
9

Please answer these questions(please include work/explanation)(3)

Mathematics
2 answers:
Papessa [141]3 years ago
4 0

Answer:

The Answer for number 3.

\sf \frac{k + 4}{4}  +  \frac{k  -  1}{4}  =  \frac{k + 4}{4k}  \\  \sf \frac{2k  + 3}{4}  =  \frac{k + 4}{4k}  \\  \sf \frac{k(2k + 3)}{4k}  =  \frac{k + 4}{4k}  \\  \sf k(2k + 3) = k + 4 \\  \sf {2k}^{2}  + 3k = k + 4 \\  \sf {2k}^{2}  + 3k  - k - 4 = 0 \\  \sf {2k}^{2}  + 2k  - 4 = 0 \\  \sf {k}^{2}  + k - 2 = 0  \\  \sf (k + 2)(k - 1) = 0 \\ \sf k + 2 = 0 \to k =  - 2 \\  \sf k - 1 = 0 \to k = 1 \\  \tt the \: answer \: is \\  \boxed{ \bold{ \red{ - 2 \: and \: 1}}}

Hope it helps!

Black_prince [1.1K]3 years ago
3 0

Answer:

See below.

Step-by-step explanation:

(k + 4)/4 + (k - 1)/4 = (k + 4)/4k

To solve these fractional equations the first step is to eliminate the fractions by multiplying through by the Lowest Common Multiple.

Here the LCM of 4, 4 and 4k  is 4k:

4k* (k + 4)/4 + 4k*(k - 1)/4 = 4k*(k + 4)/4k

k(k + 4) + k(k - 1) = k + 4

k^2 + 4k + k^2 - k = k + 4

2k^2 + 2k - 4 = 0

k^2 + k - 2 = 0

(k + 2)(k - 1) = 0

k = -2, 1   Answer.

The other equations are solved in a similar way.

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How do I calculate this? Is there a formula?
alex41 [277]

<u>Answer:</u>

Height of cables = 23.75 meters

<u>Step-by-step explanation:</u>

We are given that the road is suspended from twin towers whose cables are parabolic in shape.

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8 0
4 years ago
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<span><u><em>The correct answer is: </em></u>
4.

<u><em>Explanation</em></u><span><u><em>: </em></u>
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4 0
3 years ago
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lara31 [8.8K]

Answer:

z= 20.78

x=16.97

y=12.00

Step-by-step explanation:

To find z , we need cosine function

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To find x and y , we need to find the height of the left triangle , i.e.

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hope it help

7 0
3 years ago
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