what would x have to be so it can equal 20

x/2 + 3 =15

7 answers

To solve the equation, we need to isolate x. Let's start the process:

x/2 + 3 = 15

Subtract 3 from both sides:

x/2 = 12

Multiply both sides by 2 to eliminate the fraction:

2(x/2) = 2(12)

x = 24

Therefore, x would have to be equal to 24 for the equation x/2 + 3 = 15 to hold true.
what would x have to be for the equation to equal 20
To find the value of x for the equation x/2 + 3 = 20, we can solve it step by step:

x/2 + 3 = 20

Subtract 3 from both sides:

x/2 = 17

Multiply both sides by 2 to eliminate the fraction:

2(x/2) = 2(17)

x = 34

Therefore, x would have to be equal to 34 for the equation x/2 + 3 = 20 to hold true.
x/2 + 3 = 20 as an inequity
To rewrite the equation x/2 + 3 = 20 as an inequality, we can use the greater than or equal to symbol (≥).

x/2 + 3 ≥ 20
The base of a triangle is four less than three times the height. The area of the triangle is 38 square centimeters. A=(b×h)2
(3 points)
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An expression for the base of the triangle: Response area

Equation for the area of the triangle, substituting in for the base: Response area

The first step in solving for h: Response area
An expression for the base of the triangle: 3h - 4 (since the base is four less than three times the height)

Equation for the area of the triangle, substituting in for the base: (3h - 4) × h / 2 = 38 (using the formula for the area of a triangle, A = (base × height) / 2)

The first step in solving for h: Multiply both sides of the equation by 2 to eliminate the fraction: (3h - 4) × h = 76