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2 years ago

How do you solve 3^2x=81

Mathematics

2 answers:

Jobisdone [24]2 years ago

7 0

Answer:

x=ln(81) over 2ln(3)

Step-by-step explanation:

Using ln as its base thing instead of log and the formula usually is log over log. Plus you have to bring down the power that way.

qwelly [4]2 years ago

4 0

Answer:

x=2

Step-by-step explanation:

3^2x = 81

3^2x = 3^4

Compare powers

2x = 4

x = 2

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Compute the slope of the line intersecting the points (1, 2) and (3, 8). *

DiKsa [7]

Answer:

slope = 3

Step-by-step explanation:

Calculate the slope m using the slope formula

m = $\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

with (x₁, y₁ ) = (1, 2) and (x₂, y₂ ) = (3, 8)

m = $\frac{8-2}{3-1}$ = $\frac{6}{2}$ = 3

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2 years ago

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Answer:

y=-0.25x+1.25

Step-by-step explanation:

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2 years ago

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2 years ago

Denzel wants to work out the density of a block of wood the block of wood is in the shape of the cuboid

marishachu [46]

Answer:

$Density = 1.094g/cm^3$

Step-by-step explanation:

Given

$Length = 17.7cm$

$Width = 8.3cm$

$Height = 13.0cm$

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See attachment

Required

Determine the density of the wood

First, we calculate the volume of the wood.

$Volume = Length * Width * Height$

Substitute values for Length, Width and Height

$Volume = 17.7cm * 8.3cm * 13.0cm$

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The density is:

$Density = \frac{Mass}{Volume}$

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2 years ago

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Hoochie [10]

Answer:

$9.59 for 7 bags of potatoes

Step-by-step explanation:

First you find the unit rate by dividing 6.85 by 5.

The unit rate should equal $1.37.

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2 years ago