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WINSTONCH [101]
3 years ago
14

Helpppppppp meeeeeeeeeeeeee

Mathematics
2 answers:
cricket20 [7]3 years ago
8 0

Answer:

The answer is c

Step-by-step explanation:

Sergio [31]3 years ago
8 0

Answer:

Solve for each exponent.

3^4 is 81.

3^7 is 2187.

So the fraction is 81/2187.

Now we need to simplify it.

That's 1/27.

C is the correct answer to the problem.

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Please help me answer this question genius
kolbaska11 [484]

Answer:

  x ∈ {-0.465, 1.014}

Step-by-step explanation:

The equation can be cast in the form f(x) = 0, and solved easily using a graphing calculator. That shows x ≈ -0.465 and x ≈ 1.014. The same calculator can iterate the roots to full calculator precision.

__

The equation can be made a quadratic by the substitution ...

  z = e^(2x)

Then we have ...

  2\cosh(2x)-\sinh(2x)=4\\\\2\cdot\dfrac{e^{2x}+e^{-2x}}{2}-\dfrac{e^{2x}-e^{-2x}}{2}-4=0\qquad\text{use exponential identities}\\\\2z+2z^{-1}-z+z^{-1}-8=0\qquad\text{multiply by 2, substitute z}\\\\z^2 -8z+3=0\qquad\text{multiply by z}\\\\z=\dfrac{8\pm\sqrt{(-8)^2-4(1)(3)}}{2(1)}=4\pm\sqrt{13}\\\\x=\dfrac{\ln(z)}{2}=\dfrac{\ln(4\pm\sqrt{13})}{2}\approx\{-0465133,1.014439\}

7 0
2 years ago
During swim practice, an Olympic swimmer is required to complete three swimming intervals, in this order: warm-up freestyle, spr
Reika [66]

Answer:

I'm not sure if the warm up speed is less than the cool down speed.  If it is different than how I did it you just need to swap their positions on the y axis, so the "lumps" or whatever you want to call the shapes will be in opposite positions.  The middle one will stay the same because it is the fastest and in between the two happening.  Also let me know if you can't read any of the labels

7 0
2 years ago
Pls pls help!! ill mark you as brainliest if you get it right!!!
NNADVOKAT [17]

Answer:

the answer is C hope this helps you

8 0
3 years ago
-1/4b + 1/2 = 5/6<br>Find b​
QveST [7]

Answer:

b = -4/3

Step-by-step explanation:

First, subtract the 1/2 over

-1/4b+1/2=5/6

5/6-1/2

To get a common denominator of 6, multipy 1/2 by 3

5/6-1/2(3)

5/6-3/6=2/6

-1/4b=2/6

Next, multiply by the reciprocal of -1/4, or -4

(-4)-1/4b=2/6(-4)

b=-4/3

7 0
3 years ago
(2,0) (3,9) equation
valkas [14]

Answer: if ur  trying to do the equation for coordinate planes its

Y2-y1.

                 X1-x2

Step-by-step explanation:

That's what i was taught I'm in 8th grade tho so

6 0
3 years ago
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