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Gnom [1K]
3 years ago
5

Solve this quadratic equation by completing the square. (2x^2 = -8x + 45)

Mathematics
1 answer:
Elza [17]3 years ago
8 0
(2x^2 = -8x + 45) \\ \\ 2x^2 + 8x - 45 = 0 \\ \\ x =  \frac{-8+2 \sqrt{106} }{4} ,  \frac{-8-2 \sqrt{106} }{4} \\ \\ x = - \frac{4- \sqrt{106} }{2} , - \frac{4+  \sqrt{106} }{2} \\ \\ Answer: x = - \frac{4- \sqrt{106} }{2} , - \frac{4+  \sqrt{106} }{2}
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slavikrds [6]
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4 0
3 years ago
What is the median of the data below?<br><br> 45, 19, 23, 67, 28, 35, 46, 21, 58, 60, 23, 51
VLD [36.1K]
To find the median, you will need to list the data from least to greatest and find the middle number.

19, 21, 23, 23, 28, 35, 45, 46, 51, 58, 60, 67

Cross out a number on both sides until you reach the middle number. In this case, we are left with 2 numbers that are in the middle since there is an even amount of numbers. 

When you reach the time where you have two middle numbers, we have to find the average of those two numbers. Our two middle numbers are 35 and 45. Since we have to find the average of those two numbers, we can add them. (35 + 45 = 80). Now, since we have two middle numbers, we have to divide them by 2. 
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4 0
3 years ago
Read 2 more answers
What are the answers I have to put in the yellow boxes?
valentinak56 [21]

The expression 1x² + 14x + 40 is a quadratic expression, and the answers in the yellow boxes are 40 and 14

<h3>How to complete the boxes?</h3>

The quadratic expression is given as:

1x² + 14x + 40

This implies that:

a = 1

b = 14

c = 40

Because a quadratic expression is represented as:

ax² + bx + c

The expressions in the yellow boxes are:

a * c and b

So, we have:

a * c = 1 * 40 = 40

b = 14

Hence, the answers in the yellow boxes are 40 and 14

Read more about quadratic expressions at:

brainly.com/question/18797214

#SPJ1

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2 years ago
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Answer:

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Hope this helps!

3 0
3 years ago
Can i solve an addition to different variables
Yuliya22 [10]

Answer:

no unless the variables are known

Step-by-step explanation:

8 0
4 years ago
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