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IgorLugansk [536]
3 years ago
10

How do you do 4x - 9 = 6x - 13? what do you subtract from both sides?

Mathematics
2 answers:
ohaa [14]3 years ago
8 0
To start, you need to subtract 4x from both sides, that way, x is one one sid of the equation.

aleksley [76]3 years ago
8 0
Simple....

you have: 4x-9=6x-13

-->>Isolate the variable..(x)

4x-9=6x-13
-4x   -4x

-9=2x-13
+13    +13

4=2x

2=x

Plug it in..to make sure it is correct.....

4(2)-9=6(2)-13

8-9=12-13

-1=-1

Correct.

Thus, your answer.


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Step-by-step explanation:

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_____

<em>Comment on the geometry</em>

The centroid of an equilateral triangle is also the incenter and the circumcenter. The distance of that center from any edge of the triangle is 1/3 the height of the triangle. So, for an inradius of 6, the triangle height is 3×6 = 18. The side length of an equilateral triangle is 2/√3 times the altitude, so is 12√3 units for this triangle.

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3 years ago
A tree grows 20 percent taller every year after it is planted. The tree was 12 feet tall when planted. How tall will it be after
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Answer:

Option A; 74.3 feet

Step-by-step explanation:

~ Here we can see that this problem is set to be so that compound interest is applied ~

1. If compound interest is to be applied, it would be that the "20 percent" is the interest, the principle number ( start value ) ⇒ 12 feet in height, and the time is 10 years.

2. Let us approach this problem step by step. Instead of substiting values into a compound interest formula, let us simply attempt a variation of that process...

3. 20 percent is, in a decimal form, ⇒ 0.2

4. Now add 1 to this value 0.2, to get ⇒ 1.2

5. If we were to consider the formula, 1.2 would first be exponentially multiplied by itself 10 time, considering that it is to the power of 10 years. In other words ⇒ 1.2^10 = 6.191736422..........

6. Now let us multiply this infinite value 6.19...... by the principle quantity 12 feet ⇒ 6.191736422.......... * 12 = <em>(About) 74.30083707.......</em>

7. If we were to round this value, it would be to ⇒ 74.3 feet, or in other words the first option; <em>Option A</em>

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