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Makovka662 [10]
3 years ago
12

I got the question wrong :(

Mathematics
1 answer:
iren2701 [21]3 years ago
6 0
\bf n~~~+\stackrel{\textit{10 less than twice "n"}}{2n-10}=38\implies 3n-10=38\implies 3n=48
\\\\\\
n=\cfrac{48}{3}\implies \boxed{n=16}\quad \qquad \stackrel{\textit{10 less than twice "n"}}{2(16)-10}\implies 32-10\implies \boxed{22}
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Thi sis the question
jek_recluse [69]

\text{Given that,}\\\\x^2 + \dfrac1{x^2} = 38\\\\\\(i)\\\\\left(x-\dfrac 1x \right)^2 = x^2 + \dfrac 1{x^2} - 2 \cdot x \cdot \dfrac 1x\\\\\\\implies \left(x-\dfrac 1x \right)^2 = 38 -2 = 36\\\\\implies x - \dfrac 1x = \pm\sqrt{36} = \pm 6 \\\\\\(ii)\\\\x^2 + \dfrac 1{x^2} = 38\\\\\\\implies \left(x^2 + \dfrac 1{x^2} \right)^2 = 38^2\\\\\\\implies x^4 + \dfrac 1{x^4} + 2\cdot x^2 \cdot \dfrac 1{x^2} = 1444\\\\\\\implies x^4 + \dfrac 1{x^4} + 2 = 1444\\\\\\

\implies x^4 +\dfrac 1{x^4} = 1444-2 = 1442

7 0
2 years ago
PLEASE HURRY! WILL GIVE 5 STARS! AND THANKS!
solong [7]

Answer:

7/24

Step-by-step explanation:

2/3 - 3/8

2/3 + -3 / 8

16 / 24 + -9 / 24

16 + -9 / 24 = 7/24 (already simplest form, decimal form is 0.291667)

5 0
4 years ago
Read 2 more answers
What can you say about the y-values of the two functions ?
grandymaker [24]
Both exponential i.e 5 ^x
A is true, surprisingly. 
B cannot be true, it alternates.(rule of indices negatives by positive exponent = positive, negative by negative , but -5 x -5 x -5 = + 5)
I'm only imaginging, but C must be right, since it increases exponentially, as opposed to D which only increases quadratically.  


 
8 0
3 years ago
Find the slope of the line shown on the graph to the right (-4,-3) and (2,3)
DerKrebs [107]

Answer:

y=x+1

Step-by-step explanation:

to do this we have to use the slope formula, Rise/Run which is (y2-y1)/(x2-x1) so (3-(-3) or 3+3 divided by (2-(-4) or 2+4, so the slope would be 6/6 or 1. so it is up one over one, and since at the x coordinate of 0 it is y=1 we know the formula must be y=x+1

5 0
3 years ago
Read 2 more answers
The length and the width of a rectangular prism triple, while the height remains the same. What will happen to the volume with t
olganol [36]
If the length, height, and width of the volume are L, W, and H, respectively. Then the volume would be equal to V = L(W)(H) = LWH.

Given that the length and width have tripled, then the new length and width of the prism would be 3L and 3H. Thus, the volume of the new prism is V = (3L)(3H)(W) = 9LWH.

Comparing this to the original volume, we can clearly see that the volume has increased 9 times after the changes.

Answer: Volume becomes 9 times larger.
3 0
3 years ago
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