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Vesnalui [34]
3 years ago
9

Solve for k. 9/2k-3=4/k+1

Mathematics
1 answer:
Ivenika [448]3 years ago
6 0
You'll need to use parentheses here to convey this problem accurately to possible helpers.  Unsure of whether you mean (9/2)k -3 or  9 / (2k-3).

I will assume that you mean:

    9           4
------- = ---------
2k-3        k+1

Cross mult:  9k+9=8k-12, so k= -21.

If that's not what you expected, then try again to present the problem without ambiguities.
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Evaluate 2(x - 4) + 3x - x2 for x = 2.<br> O A. -6<br> O B. -2<br> O C. 6<br> O D. 2
Olenka [21]

Answer:

B. -2

Step-by-step explanation:

2(x - 4) + 3x - x2

2(2 - 4) + 3(2) - (2)2

2(-2) + 6 - 4

-4 + 6 - 4

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8 0
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What letter stays the same when reflected over the x-axis
valina [46]

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3 years ago
The perimeter of a rectangular campsite is 64 cm and its area is 207 cm. Find the length and the breadth of the rectangle.
AlladinOne [14]
Perimeter Formula:
2l + 2b = 64


Area Formula:
l \times b = 207
Set perimeter Formula equal to b:
2l + 2b = 64 \\ 2(l + b) = 64 \\  l+ b = 32 \\ b = 32 - l
Plug formula for be we just made above into the area Formula:
(32 - l) \times l = 207


Solve for L (you'll have to use quadratic formula) then plug that back into the area Equation and solve for b.

Here's a link to where the problem has been explained before (they go into more detail than me).

https://brainly.ph/question/468631

lmk if you need any more help
6 0
3 years ago
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ycow [4]

Answer:

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Step-by-step explanation:

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3 years ago
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Digiron [165]
Negative i believe is the correct answer
3 0
3 years ago
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