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Debora [2.8K]
3 years ago
11

What is the property of this equation? if 2x=8 then x=4

Mathematics
1 answer:
Eva8 [605]3 years ago
7 0
Answer is 2 x 4=8 this is a scientific property
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Evaluate the expression: z(x + 3y) when x = 6, y = 8, and z = 5
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3 years ago
Would you rather (A) Run for 12 minutes at least 10 miles and hour; ... OR ... (B) 20 minutes at 6 miles per hour?
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5 0
2 years ago
Solve this equation by completing the square: x2 + 4x – 13 = –8
marishachu [46]

Answer:

x = 1 or x = -5

Step-by-step explanation:

We are given;

  • The quadratic equation, x² + 4x - 13 = -8

We are required to solve the equation using the completing square method.

To do this, we use the following steps;

Step 1: We make sure the coefficient of x² is one

x² + 4x - 13 = -8

Step 2: Combine the like terms (take the constant term to the other side)

x² + 4x - 13 = -8

x² + 4x = -8 + 13

we get

x² + 4x  = 5

Step 3: We add the square of half the coefficient of x on both sides of the equation

Coefficient of x = 4

Half of coefficient of x = 2

Square of half the coefficient of x = 2² (4)

We get;

x² + 4x + (2²)  = 5 + (2²)

Step 4: Put x and 2 under one square and the solve the other side of the equation.

We get

(x + 2)² = 5 + 4

(x + 2)² = 9

Step 5: Get the square root on both sides of the equation;

(x + 2)² = 9

√(x + 2)² = ±√9

(x + 2)= ±3

Therefore;

x+2 = + 3 or x + 2 = -3

Thus, x = 1 or -5

The solution of the equation is x = 1 or x = -5

6 0
3 years ago
HELP FAST!!! <br> what’s the answer?
JulijaS [17]

Answer:

(1,-3)

Step-by-step explanation:

4 0
3 years ago
Graph y = sin^-1(-1/2x) the interval-5
Lana71 [14]
Not enough information
5 0
3 years ago
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