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madam [21]
4 years ago
12

If X varies directly as 2n+1, and n=4 when x=6, find n when x=18

Mathematics
2 answers:
DedPeter [7]4 years ago
7 0
X=2n+1     x=6   n=4
6=2 times 4 +1=9
6=9 and since 18 divided by 6=3, then n=9 times 3 which equals to 27

               n=27
Triss [41]4 years ago
4 0

Answer:

If X varies directly as 2n+1, and n=4 when x=6, find n when x=18

Step-by-step explanation:

<em>When X = 6, n = 4 in the formula x = 2n + 1, it would remain as</em>: 6 = (2x4) + 1 = 9.

<em>With a rule of 3</em>, when <em>18 = n; 6 = 9</em>; n = 18 x 9/6 = 27

<u>n = 27</u>

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Explain why x^2 = -81 does not have a solution.
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Find the equation of the line passes through (-3,-4) and whose slope is 3/2 in slope intercept form. (Algebra 2 or Geometry)
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Hey there! I'm happy to help!

Slope intercept form is y=mx+b, where m is the slope and b is the y-intercept. We already have the slope, so our equation so far is y=3/2x+b. We just need to find the b for it to be complete.

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3 0
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Read 2 more answers
In a triangle, the measure of the first angle is twice the measure of the second angle. The measure of the third angle is 64 deg
Xelga [282]
Argument
Let the second angle = x
Let the first angle = 2x
Let the third angle = x + 64

Substitute and Solve
x + 2x + x + 64 = 180 Collect the like terms on the left.
4x + 64 = 180 Subtract 64 from both sides.
4x = 180 - 64
4x = 116 Divide by 4
x = 116 / 4
x = 29

Conclusion
x = 29
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x + 64 = 93 I'm leaving you with the problem of checking this out.

Answer
The first angle = 58
The second angle = 29
The Third angle = 93


7 0
4 years ago
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