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Talja [164]
2 years ago
12

Rationalize the denominator. - 11x^3/ Root7x+1

Mathematics
1 answer:
sukhopar [10]2 years ago
6 0

Answer:

maybe 0

Step-by-step explanation:

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Please help I don’t understand how to solve this !
Ket [755]

Answer:

x = 30

Step-by-step explanation:

x + 2x + 3x = 180

             <u>6x</u> = <u>180</u>

              6       6

               x =  30

8 0
2 years ago
<img src="https://tex.z-dn.net/?f=%5Cfrac%7B%5Csec%5Cleft%28x%5Cright%29%7D%7B%5Ccos%5Cleft%28x%5Cright%29%7D-%5Cfrac%7B%5Csin%5
DanielleElmas [232]

Answer:

1

Step-by-step explanation:

First, convert all the secants and cosecants to cosine and sine, respectively. Recall that csc(x)=1/sin(x) and sec(x)=1/cos(x).

Thus:

\frac{sec(x)}{cos(x)} -\frac{sin(x)}{csc(x)cos^2(x)}

=\frac{\frac{1}{cos(x)} }{cos(x)} -\frac{sin(x)}{\frac{1}{sin(x)}cos^2(x) }

Let's do the first part first: (Recall how to divide fractions)

\frac{\frac{1}{cos(x)} }{cos(x)}=\frac{1}{cos(x)} \cdot \frac{1}{cos(x)}=\frac{1}{cos^2(x)}

For the second term:

\frac{sin(x)}{\frac{cos^2(x)}{sin(x)} } =\frac{sin(x)}{1} \cdot\frac{sin(x)}{cos^2(x)}=\frac{sin^2(x)}{cos^2(x)}

So, all together: (same denominator; combine terms)

\frac{1}{cos^2(x)}-\frac{sin^2(x)}{cos^2(x)}=\frac{1-sin^2(x)}{cos^2(x)}

Note the numerator; it can be derived from the Pythagorean Identity:

sin^2(x)+cos^2(x)=1; cos^2(x)=1-sin^2(x)

Thus, we can substitute the numerator:

\frac{1-sin^2(x)}{cos^2(x)}=\frac{cos^2(x)}{cos^2(x)}=1

Everything simplifies to 1.

7 0
2 years ago
The figure is transformed as shown in the diagram. Describe the transformation. A) dilation,then reflection B) reflection, then
Lelu [443]

Answer:

A! The polygon was dilated, then reflection vertically!

8 0
2 years ago
Read 2 more answers
(7y is supposed to be 7x)
Andrei [34K]

Answer:

Step-by-step explanation:

Angle E is (7x+27) because it is corresponding.

So, 7x+27+15x-5=180 (angle on a straight line is 180 degrees

22x+22=180

22x=158

x= 158/22 = 7.18'

7 0
2 years ago
7(-2k+4)-6=7k-20 what is the answer
lord [1]
The answer to this equation would be k=2
7 0
3 years ago
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