The length of a spring varies directly with the mass of an object that is attached to it. When a 30-gram object is attached, the
1 answer:
Answer:
Step-by-step explanation:
I'm assuming that the length of the spring is s and the mass of the object is m. If that be the case, the direct variation equation, which a line btw, is
s = km where k is the constant of proportionality. We have to solve for k, the slope of the line, in order to determine the model for this situation.
9 = k(30) so
Now that we know, the slope of the line, we can rewrite the equation with the slope in place:
, choice A.
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Answer:
OC=48
RK=100
Step-by-step explanation:
We can use proportions to find both OC and RK.
Step-by-step explanation:
1. Create your own example and explain how to solve Quadratic Equation using Quadratic Formula.
The quadratic formula is used to solve quadratic equations. It is shown as
A quadratic equation is generally shown in the form of
For example, if you saw the equation
7 would be , 3 would be
, and 20 would be
.
To solve the equation above, you would fill in the quadratic formula as such,
Then you could solve for x.
2. What part in the Quadratic Formula is the discriminant?
The discriminant is the equation under the square root on the quadratic formula,
It is tells us whether there are two solutions, one solutions, or no solutions.
3. How do you know the number of solutions based on the value of the discriminant?
To know the number of solutions based off of the value of the discriminant, you need to plug in your values. Using the example quadratic equation,
We will plug the values into the discriminant.
Now, if the discriminant is positive it has two real solutions. If the discriminant is zero the equation has no real-number solutions. And finally, if the discriminant is negative, the equation has one real solution. Because our discriminant is -551, the example equation has one real solution.
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