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soldier1979 [14.2K]
4 years ago
6

How to solve a quadratic equation by taking square roots?

Mathematics
1 answer:
asambeis [7]4 years ago
7 0
I'm bad at explaining things, so I will show you an example.

Equation: 4t² = 25
1). Take the square root of both terms

√4t² = √25

√4t² = 4t 
√25 = 5 (5x5 = 25)

Now, you are left with 4t = 5
Divide each side of that equation by 4

    4t = 5
  -----  ----
    4     4
 
 t = 5/4 or -5/4

I don't know why, but the answer can be positive or negative. I'm still trying to understand that :)

I hope that this helps you a little bit!




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Two dice are rolled, find the probability that the sum is less than 13
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A line goes through the points (4, 5) and (2, -6). Write the equation of the line in slope-intercept form. ​
myrzilka [38]
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3 years ago
Question 9 of 25
tresset_1 [31]

Answer:

One approach to this problem is to obtain the graph for the given equation.

We need to find every intersection those functions have with the axis 'x' and 'y'

starting with g(x)

g(x=0)=0-3, first point (0,-3) it iis the crossing point with 'x' axis

g(x)=0=x-3, second point (3,0) it iis the crossing point with 'y' axis

Lets do the same for f(x)

g(x=0)=0, this leads to the first point (0,0) it iis the crossing point with 'x' axis and also, with the 'y' axis

We dont need to find any other, since always y=x

By plotting we have the attached picture

Now you can see that g(x) differs from its parent function in that is shifted 3 units to the right, and also 3 units down.

Step-by-step explanation:

8 0
2 years ago
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I need 13-18 pleasseee
Andru [333]

Answer:

wanted points. sorry

Step-by-step explanation:

8 0
3 years ago
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