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solniwko [45]
3 years ago
10

Solve by using the quadratic formula: x2 - 6x + 7 = 0

Mathematics
1 answer:
IgorC [24]3 years ago
8 0

Final Answer: x = 3 + \sqrt{2}, 3 - \sqrt{2}

Steps/Reasons/Explanation:

Question: Solve by using the quadratic formula:  x^{2}  - 6x + 7 = 0.

<u>Step 1</u>: Use the Quadratic Formula.

x = \frac{6 + \sqrt[2]{2} }{2}, \frac{6 - \sqrt[2]{2} }{2}

<u>Step 2</u>: Simplify solutions.

x = 3 + \sqrt{2}, 3 - \sqrt{2}

~I hope I helped you :)~ The quadratic formulaic is attached in an image.

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4 years ago
. Here is an equation 2x + 9 = -15. Write three different equations that have the same solution as 2x + 9 = -15. Show or explain
Anettt [7]

Answer:

1. x-3=-15
2.2x=-24
3.2x-3=-27

Step-by-step explanation:

Given the following question:

2x+9=-15

To find three equations that have the same solution as the given equation we have to first solve the equation.

2x+9=-15
9-9=0
-15-9=-24
2x=-24
2x\div2=x
-24\div2=-12
x=-12

<u>Equation one:</u>
x-3=-15
-3+3=0
-15+3=-12
x=-12

<u>Equation two:
</u>2x=-24
2x\div2=x
-24\div2=-12
x=-12

<u>Equation three:</u>
2x-3=-27
-3+3=0
-27+3=-24
-24\div2=-12
x=-12

Hope this helps.

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Step-by-step explanation:

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Gloria collected data from a random sample of 1200 students in her school district asking whether or not they read more than one
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Answer: Sample is biased

Step-by-step explanation:

In her experiment, Gloria assumes that the reading habits of the students in her school district are exactly the same to that of students in all state schools. This assumption is unlikely to be true and, therefore, this statistic is misleading because the sample used is biased.

From her data, all Gloria can do is report the percentage of students that read more than one book per month in her school district

Step-by-step explanation:

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