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Law Incorporation [45]
3 years ago
6

It is given that 2^x = 5^y = 10^z , express z in terms of x and y​

Mathematics
2 answers:
weqwewe [10]3 years ago
4 0

9514 1404 393

Answer:

  z = (xy)/(x+y)

Step-by-step explanation:

Taking logarithms base 10, we have ...

  x·log(2) = y·log(5) = z·log(10)

  z = x·log(2) = y·log(5) . . . . . . . . log(10) = 1

__

Then z/x = log(2), and z/y = log(5), so ...

  z/x +z/y = log(2) +log(5) = log(2·5) = 1

  z = 1/(1/x +1/y) = 1/((x+y)/(xy))

  z = (xy)/(x+y)

aksik [14]3 years ago
4 0

Answer:

Step-by-step explanation:

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What is the solution to the following equation?
lions [1.4K]

Answer:

D. x = 7

Step-by-step explanation:

NOTE : <u><em>there should be an equal sign somewhere in the given expression.</em></u>

suppose the equation is the following:

3(x-4)-5 = x-3

………………………………………………………

3(x - 4) - 5 = x - 3

⇔ 3x - 12 - 5 = x - 3

⇔ 3x - 17 = x - 3

⇔ 3x - 17 + 17= x - 3 + 17

⇔ 3x = x + 14

⇔ 2x = 14

⇔ x = 14/2

⇔ x = 7

8 0
2 years ago
The equation of a line given two points needs to be found. Samuel claims that slope-intercept form will generate the equation an
Zigmanuir [339]

The answer is:put the equation xa+yb=1 to the slope intercept form and find its slope and y-intercept.

3 0
3 years ago
Radical 5* radical 2
Setler [38]

Answer:

\sqrt{10}

Step-by-step explanation:

Rule: \sqrt{a} \times \sqrt{b} = \sqrt{ab}

\sqrt{5} \times \sqrt{2} = \sqrt{5 \times 2} = \sqrt{10}

6 0
2 years ago
2. Find the equation of a line<br>a) With a slope of 4, passing through the origiin​
madreJ [45]

Answer:

y=4x

Step-by-step explanation:

<u>Equation of the line</u>

A line can be expressed in many forms.

The equation of the line in slope-intercept form is:

y=mx+b

Being m the slope and b the y-intercept.

The point-slope form of the equation of a line is:

y-k=m(x-h)

Where m is the slope and (h,k) is a point through which the line passes.

The equation of a line passing through points (x1,y1) and (x2,y2) can be found as follows:

\displaystyle y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)

We are required to find a line with slope m=4 passing through the origin (0,0).

Using the point-slope form:

y-0=4(x-0)

Simplifying

\boxed{y=4x}

3 0
3 years ago
Read 2 more answers
kyle bought 28 feet of wire at the handware store. the wire cost was $2.79per foot, including sales tax. if kyle paid with a $10
Alex17521 [72]
He should receive around $21.88. This is excluding the fact he still needs to pay the sales tax. I would subtract a few more dollars.


Please vote my answer! Brainliest.
6 0
3 years ago
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