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dmitriy555 [2]
3 years ago
8

Subsitution form y=3x 4x+2y=30

Mathematics
1 answer:
olga2289 [7]3 years ago
4 0

Answer:

4x+2(3x)=30

4x+6x=30

10x=30

/10. /10

x=3

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For which value of theta is cot (theta) undefined?
sattari [20]

The cotangent function is defined as the ratio between cosine and sine of a given angle, i.e.


\cot(x) = \frac{\cos(x)}{\sin(x)}


Since you can't have zero at the denominator, the cotangent function is not defined when the sine is zero.


Let's look at your option:


\sin(90^\circ) = 1, so the cotangent is defined here


\sin(180^\circ) = 0, so the cotangent is not defined here


\sin(270^\circ) = -1, so the cotangent is defined here


\sin(450^\circ) = \sin(360^\circ+90^\circ)=\sin(90^\circ) = 1, so the cotangent is defined here

6 0
3 years ago
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Which system of equations can you use to find the width of the rectangle ?
Andreas93 [3]
Length times with (l) (w)
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3 years ago
Hey! I hope everyone is doing great so far :) i'll appreciate some help, ty!
ioda
0.2 (y+2) = 0.2y + 0.2(2)
= 0.2y + 0.4
4 0
3 years ago
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When Angela calculated her net worth; she got this: Net Worth = $435 - $560 = - $125. What does her negative net worth mean?
Tcecarenko [31]

Answer:

The negative net worth mean her liabilities are larger than her assets.

Step-by-step explanation:

  • Angela's calculation of net worth:

                            Net Worth = $435 - $560 = - $125

  • Net worth is the difference in assets and debt. If the net worth is negative it means that debt is greater than assets.
  • The same thing is in Angela's case. Her debt or liability is greater than total assets hence making her net worth negative.
  • Her liability is still $125 greater than all of her assets added upon.
6 0
3 years ago
Need help again ! On this one
PSYCHO15rus [73]

Answer:

2w + 50 + 2w = 150

w = 25

Good luck

8 0
3 years ago
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