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erastovalidia [21]
2 years ago
5

2/3x - 1/9x + 5 = 20

Mathematics
1 answer:
BabaBlast [244]2 years ago
6 0

Answer:I think the answer is x=27

Step-by-step explanation:

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State the domain of the function.
oksian1 [2.3K]
I’m pretty sure its the final option. (-2, -1, 0, 1, 2)
3 0
2 years ago
PLEASE HELPP ♥
kirza4 [7]

Answer:

An exponential function is a function of the form

f(x)=bx

where b≠1 is a positive real number. The domain of an exponential function is (−∞,∞) and the range is (0,∞).

Solve the equation: 52x−3=752x−3=7.

Since we can’t easily rewrite both sides as exponentials with the same base, we’ll use logarithms instead. Above we said that logb(x)=ylogb⁡(x)=y means that by=xby=x. That statement means that each exponential equation has an equivalent logarithmic form and vice-versa. We’ll convert to a logarithmic equation and solve from there.

52x−3log

⎛⎝⎜

⎞⎠⎟=7=2x−352x−3=7log5

⁡(7

)=2x−3

From here, we can solve for xx directly.

2xx=log5(7)+3=log5(7)+32

A logarithmic function is a function defined as follows

logb(x)=ymeans thatby=xlogb⁡(x)=ymeans thatby=x

where b≠1b≠1 is a positive real number. The domain of a logarithmic function is (0,∞)(0,∞) and the range is (−∞,∞)(−∞,∞).

Solve the equation:

log3(2x+1)=1−log3(x+2).log3⁡(2x+1)=1−log3⁡(x+2).

With more than one logarithm, we’ll typically try to use the properties of logarithms to combine them into a single term.

log3(2x+1)log3(2x+1)+log3(x+2)log3((2x+1)(x+2))log3(2x2+5x+2)2x2+5x+22x2+5x−1=1−log3(x+2)=1=1=1=3=0log3⁡(2x+1)=1−log3⁡(x+2)log3⁡(2x+1)+log3⁡(x+2)=1log3⁡((2x+1)(x+2))=1log3⁡(2x2+5x+2)=12x2+5x+2=32x2+5x−1=0

Let’s use quadratic formula to solve this.

x=−5±52−4⋅2⋅−1−−−−−−−−−−−√2⋅2=−5±

−−−−−−−−⎷4.x=−5±52−4⋅2⋅−12⋅2=−5±33

4.

What happens if we try to plug x=

4 0
3 years ago
????????????????????
Arlecino [84]

Answer:

its b

Step-by-step explanation:

3 0
3 years ago
1<br> Write down the temperature that is 7 °C below -3°C.<br> ES
Pavel [41]

Answer:

-10 ^\circ C

Step-by-step explanation:

Subtract 7 from -3.   -3 - 7 = 0=-10

5 0
2 years ago
If 98 is added to a number, the result is 36 less than three times the number. Find the number.
garri49 [273]

Answer:

\tex\huge\boxed{67}

Step-by-step explanation:

In order to solve this problem, we should set it up in an algebraic equation. Doing so will make it easier to make sense of the problem. To do this, we can represent each part of the statement with an expression.

For the purposes of this, let's call our unknown number n.

  1. If 98 is added to a number = n+98
  2. The result is, =
  3. 36 less than 3 times the number = 3n - 36

Altogether, we get n+98=3n-36. We can now solve for n.

  1. Remove the \bold{n} term from one side. n+98 - n = 3n -36 - n
  2. 98 = 2n-36
  3. Isolate the \bold{n} term. 98+36=2n-36+36
  4. 134=2n
  5. Get \bold{n} by itself. 134 \div 2 = 2n \div 2
  6. 67=n

Therefore, the answer here is 67.

Hope this helped!

3 0
2 years ago
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