If:
a + (-0.4) = -3
a = -3 - (-0.4) = -3 + 0.4 = -2.6
A. Addition and subtraction are opposites.
b. A number line shows where numbers are in relation to each other. It shows that 0 and 100 are farther apart than 0 and 10.
c. If the number is less than 0 or greater than 0. Less than 0 is negative and greater than 0 is positive.
Answer:
x = plus or minus 4
Step-by-step explanation:
Let's first simplify this equation by dividing both sides by 3:
3x^2 48
------- = ------ becomes x^2 = 16
3 3
Taking the square root of both sides of x^2 = 16, we get x = plus or minus 4.
Answer: A
Step-by-step explanation: 4,367÷0.004= 1,091,750
The step 7 is a wrong step, because in the denominator 1 is written in place of 2.
<h3>What is a quadratic equation?</h3>
The quadratic equation is given as ax² + bx + c = 0. Then the degree of the equation will be 2. Then we have
Two of the steps in the derivation of the quadratic formula are shown below.
The equation is given below.

Then the above equation can be written as

The step 7 is a wrong step, because in the denominator 1 is written in place of 2.
More about the quadratic equation link is given below.
brainly.com/question/2263981
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