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Ede4ka [16]
3 years ago
10

Solve the quadratic by quadratic formula below x squared-14x=-49

Mathematics
2 answers:
Nikitich [7]3 years ago
6 0
Equation ax²+bx+c=0 arrange the equation x²-14x+49=0  a=1 b=-14 c=49
General Formula= b+ or - √b²-4ac/2a    by substituting gives us
-14+ or - √0/2  so we have one answer because 4ac is to b2 and √0 = 0             -14/2 = -7 The answer is one solution -7. If you want and extra hint there it is: b²-4ac is called the discriminant because it shows you how many solutions the equation will have if it's positive then it's 2 solutions and if it's zero then it's one solution and if it's negative no solution because b²-4ac is under a root and if a negative number is under a square root then it's undefined.
lubasha [3.4K]3 years ago
5 0
X^2-14x+49=0

Factor
(x-7)(x-7)

Check
-7-7=-14
-7*-7=49

Use ZPP
x-7=0
x=7

Final answer: x=7
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First, you need to find the slope of the line. You can use this with the slope formula, \frac{y_{2} - y_{1}}{x_{2} - x_{1}}, where the x's and y's are the given coordinates.

\frac{y_{2} - y_{1}}{x_{2} - x_{1}}   Plug in the coordinates
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\frac{6}{-2}   Divide
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Now, plug the slope (m) and one pair of coordinates, I'll use (-2, 11), into point-slope form, y - y_{1} = m (x - x_{1}).

y - y_{1} = m (x - x_{1})   Plug in the values
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3 years ago
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Svetllana [295]

No, we can only suppose that the observed distribution deviates from the expected distribution when we reject the null hypothesis.

<h3>What is a null hypothesis?</h3>

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4 0
2 years ago
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Slav-nsk [51]

Answer:

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Step-by-step explanation:

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Hopes this helps!

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4 years ago
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Hey! I don’t know if this is what you mean.. but I tried to understand it.

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3 years ago
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