What is the value of x?

Mathematics

2 answers:

navik [9.2K]3 years ago

6 0

45 = 2x - 5

Add five to each side

50 = 2x

divide both sides by 2

25 = x

the value of x is 5

<em>Hoped this helped!</em>

kipiarov [429]3 years ago

3 0

Answer: the value of x is 70

Steps:

the angles 45 and (2x-5) are supplementary, so they add up to 180 degrees. We use that property to solve for x:

2x-5 + 45 = 180

2x = 140

x=70

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If a scale distance of 3.5 inches on a map represent an actual distance of 175 km what actual distance does a scale distance of

gavmur [86]

Considering the definition of map and scale, an actual distance of 269.59 km represent a scale distance of 5.7 inches .

<h3>Definition of map and scale</h3>

A map is a representation of a place, at a size smaller than the real size.

The scale of a cartographic representation is the relationship of similarity between the real dimensions of the geographical space represented and those of its image on the map. That is, the scale is defined as the proportionality relationship that exists between a distance measured on the ground and its corresponding measurement on the map.

One way to represent the scale is by a fraction, which indicates the proportion between the distance on a map and its corresponding distance in reality:

$Scale=\frac{distance on the map}{distance in reality}$

<h3>Actual distance in this case</h3>

In this case, you know that a scale distance of 3.5 inches on a map represent an actual distance of 175 km.

To know the real distance that represents a scale distance of 5.7 inches, as the scale ratio is the same as in the previous case, it is expressed:

$\frac{3.7 inches}{175 km}=\frac{5.7 inches}{distance in reality}$