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Elena-2011 [213]
3 years ago
7

I need help plzzzzzz

Mathematics
1 answer:
Nat2105 [25]3 years ago
4 0
The right answer is B

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How to solve an expression with variables in the exponents?
gtnhenbr [62]

Answer:

  use logarithms

Step-by-step explanation:

Taking the logarithm of an expression with a variable in the exponent makes the exponent become a coefficient of the logarithm of the base.

__

You will note that this approach works well enough for ...

  a^(x+3) = b^(x-6) . . . . . . . . . . . variables in the exponents

  (x+3)log(a) = (x-6)log(b) . . . . . a linear equation after taking logs

but doesn't do anything to help you solve ...

  x +3 = b^(x -6)

There is no algebraic way to solve equations that are a mix of polynomial and exponential functions.

__

Some functions have been defined to help in certain situations. For example, the "product log" function (or its inverse) can be used to solve a certain class of equations with variables in the exponent. However, these functions and their use are not normally studied in algebra courses.

In any event, I find a graphing calculator to be an extremely useful tool for solving exponential equations.

8 0
3 years ago
Which of these describes the system of linear equations below?
Nataly [62]

Given:

The system of equations is

3x-2y=7

6x-4y=14

To find:

The correct statement for the given system of equations.

Solution:

On comparing the given equations and general form of linear equation, i.e., ax+by+c=0, we get

a_1=3,b_1=-2,c_1=-7

a_2=6,b_2=-4,c_2=-14

Here,

\dfrac{a_1}{a_2}=\dfrac{3}{6}=\dfrac{1}{2}

\dfrac{b_1}{b_2}=\dfrac{-2}{-4}=\dfrac{1}{2}

\dfrac{c_1}{c_2}=\dfrac{-7}{-14}=\dfrac{1}{2}

Since, \dfrac{a_1}{a_2}=\dfrac{b_1}{b_2}=\dfrac{c_1}{c_2}, therefore, the two equations are equivalent and the system has infinitely many solutions.

Hence, the correct option is b.

4 0
3 years ago
WILL GIVE BRAINLIEST
eduard

Answer:

uh thats not really an actual question but k...

Step-by-step explanation:

there are no operations

3 0
3 years ago
Solve the inequality.<br> 6+x&gt;56+x&gt;5
weqwewe [10]

Answer:

X>50

X>-51

Step-by-step explanation:

6+x>56

56+x>5

separate the equation into different equations by the sign

I) 6+x>56

x>56-6

x>50

ii) 56+x>5

x>5-56

x>-51

4 0
3 years ago
What is 6.9 times .27 equal=
nordsb [41]

Answer:

186.3

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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