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zlopas [31]
2 years ago
6

Helpppppppppppppppppppppppppppppppppppp

Mathematics
2 answers:
tekilochka [14]2 years ago
8 0
First we rewrite the expression:
 root (8x ^ 7y ^ 8)
 (8x ^ 7y ^ 8) ^ (1/2)
 Properties of exponents:
 (8 ^ (1/2) x ^ (7/2) y ^ (8/2)
 We rewrite:
 (8 ^ (1/2) x ^ (7/2) y ^ 4
 (2 * 2 ^ (1/2) x ^ 3y ^ 4x ^ (1/2)
 (2 * x ^ 3 * y ^ 4 * (2x) ^ (1/2)
 Answer:
 (2*x^3*y^4*(2x)^(1/2)
 option 3
Alexxandr [17]2 years ago
4 0
To take out terms outside the radical we need to divide the power of the term by the index of the radical; the quotient will be the power of the term outside the radical, and the remainder will be the power of the term inside the radical. 
First, lets factor 8:
8=2 ^{3}
Now we can divide the power of the term, 3, by the index of the radical 2:
\frac{3}{2} = 1 with a remainder of 1
Next, lets do the same for our second term x^{7}:
\frac{7}{2} = 3 with a remainder of 1
Again, lets do the same for our third term y^{8}:
\frac{8}{2} =4 with no remainder, so this term will come out completely.

Finally, lets take our terms out of the radical:
\sqrt{8x^{7} y^{8}  }= \sqrt{ 2^{3} x^{7} y^{8}   }  =2 x^{3}  y^{4}  \sqrt{2x}

We can conclude that the correct answer is the third one. 

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Burka [1]

Answer:

0, -1, -2

Step-by-step explanation:

Domain means the x-values of the function, so whatever points you can see the function passes through (I assume) would be your domain. HTH :)

8 0
2 years ago
A study is being conducted on the amount of gasoline purchased on an average day in town. A random variable is used to identify
nordsb [41]

Answer:

4.It is continuous because the number of gallons can take on any value over a range of values.

Step-by-step explanation:

Discrete variables are ones that are disconnected.  This means they take only specific values, with no values inbetween.

Continuous variables are ones that can take any value in a given range.

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6 0
2 years ago
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Find the value of tangent for angle A
gavmur [86]
AC = √(40²-12²) = √(1600-144) = √1456 = 4√91

tanA = 12/4√91 = 3/√91 = 3√91/91


option а.
4 0
3 years ago
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Vineet solved a system of equations by substitution. In his work, he substituted an expression for one of the variables and solv
Eddi Din [679]

He can conclude that the system of equations has no solution since one equation in it always results with false equivalency.

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3 0
3 years ago
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HELP ASAP!!! 40 POINTS
ICE Princess25 [194]

Using derivatives, it is found that the x-values in which the slope belong to the interval (-1,1) are in the following interval:

(-15,-10).

<h3>What is the slope of the tangent line to a function f(x) at point x = x0?</h3>

It is given by the derivative at x = x0, that is:

m = f^{\prime}(x_0).

In this problem, the function is:

f(x) = 0.2x^2 + 5x - 12

Hence the derivative is:

f^{\prime}(x) = 0.4x + 5

For a slope of -1, we have that:

0.4x + 5 = -1

0.4x = -6

x = -15.

For a slope of 1, we have that:

0.4x + 5 = 1.

0.4x = -4

x = -10

Hence the interval is:

(-15,-10).

More can be learned about derivatives and tangent lines at brainly.com/question/8174665

#SPJ1

8 0
2 years ago
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