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stiv31 [10]
3 years ago
12

In solving 2x -5 = 3 do you have to use the addition property of equality first ? Why or why not ? Why do you nomrally use the a

ddition or equality first ?
Mathematics
1 answer:
nikdorinn [45]3 years ago
7 0

In that equation, you have to add the 5 over to the 3. You do this because you want the variable (x) by itself, meaning on one side. That’s why after you add the 5, you will have to divide by 2 to get x by itself. Hope this helps.

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What is the value of x?
adelina 88 [10]

This is an equilateral triangle, which is a triangle that has 3 congruent/equal sides and 3 congruent angles.


To find "x", you can set the sides equal to each other because they are suppose to be the same length (you can just do two sides because all of the sides are the same)

[Side AB = Side BC]

4x - 10 = 3x + 2     Subtract 3x on both sides

x - 10 = 2         Add 10 on both sides

x = 12


[proof]

Side AB:

4x - 10    Plug in 12 for x

4(12) - 10 = 48 - 10 = 38


Side BC:

3x + 2     Plug in 12 for x

3(12) + 2 = 36 + 2 = 38


Side AC:

5x - 22      Plug in 12 for x

5(12) - 22 = 60 - 22 = 38




This is also an equilateral triangle (the tick marks show that the sides are the same)

A triangle is 180°. So the three angles add up to 180°.

Since this is an equilateral triangle, all the angles should be the same.

Each angle is 60°

[60° + 60° + 60° = 180°   or you could have divided 180 by 3 = 60]


Now that you know each angle is 60°, you can do:

(2x - 4)° = 60°

2x - 4 = 60    Add 4 on both sides

2x = 64    Divide 2 on both sides

x = 32


4 0
2 years ago
Help please I need the answers
Cerrena [4.2K]

Answer:

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Step-by-step explanation:

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3 years ago
(Please answer soon as possible) At the beginning of the day the stock market goes up 60 3/4 points and stays at this level for
Svet_ta [14]

Answer:

it is 2766628276262626828373636737 points

Step-by-step explanation:

no explanation needed lol

3 0
3 years ago
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Cost of article = $455 Percentage of markup (on cost) = 28%
SpyIntel [72]
The cost would be $582.40!

I hope this helped! Mark me Brainliest! :) -Raven❤️
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3 years ago
Mr and Mrs Carlton are taking John and Mrs carltons parents kn a 3 day colorado ski trip. They will travel 1,000 miles in Me. Ca
Rashid [163]

Answer:

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Step-by-step explanation:

1000 miles divided by 30 miles per gallon.

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3 years ago
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