How do you solve x^2 plus 16x plus 63=0?

Answers

Answer 1

Answer: $x^2+ 16x + 63=0 \n \na=1, \ b=16 , \ c=63 \n \n \Delta =b^2-4ac =16^2 -4\cdot1\cdot 63 = 256 -252 = 4 \n \nx_(1)=(-b-\Delta )/(2a)=(-16-√(4))/(2 )=(-16-2)/(2)=-(-18)/(2)=-9 \n \nx_(2)=(-b+\Delta )/(2a)=(-16+√(4))/(2 )=(-16+2)/(2)=-(-14)/(2)=-7 \n \n \nAnswer : \ x= -7 \ \ or \ \ x= -9$

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Find the mean of the following data set. 42, 45, 58, 63

Answers

The mean of the given data will be equal to 52.

What is mean?

Mean is defined as the ratio of the sum of the given data to the number of the counts of the data.

Given that:-

42, 45, 58, 63

The mean will be calculated as:-

Mean = Sum of the data sets ÷ Number of the data sets

Mean = ( 42 + 45 + 58 + 63 ) ÷ 4

Mean = 208 ÷ 4

Mean = 52

Therefore the mean of the given data will be equal to 52.

To know more about Mean follow

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To find the Mean you have to add all the numbers from the data set,
$42+45+58+63=208$
Next you divide the sum by the amount of numbers in the set,
$208/4=52$
Final Answer: 52

Please!! help me this is due today i will make you BRAINLIEST

Answers

Answer: 37 is the median

Step-by-step explanation:

Answer:

Step-by-step explanation:

The middle of the box plot isn't 35 and it isn't 40. It's in the middle, so the best option is 37.

You are going to the movie theater with your parents and your 8 year-old brother. Adult tickets cost $8, ages 10 -18 cost $7.25 and under age 10 cost $4.25. If you spent an additional $20 on soda and popcorn, what is the total cost of your trip to the movie theater

Answers

total cost = 47.25 if your age is between 10 - 18

Answer:

The answer is $47.50

Step-by-step explanation:

All you have to do is add up the price of each person attending with what age price for each and then add the additional $20 for the sodas and popcorn.

Two parents = 8.00 + 8.00 = $16.00

"You" would most likely be student price, so.. = $7.25

And 8 year-old little brother is under 10, so.. = $4.25

Adding up those three prices we get $27.50, now all to do is add the additional drinks and snacks price. 27.50 + 20.00 = $47.50

A businessman has 10 employees. His salary is equal to 6 times the average of employees salaries. If the 11 of them receive a total of $64,000 in one year, what was the business mans salary that year ?? a) $4000, b) $6000, c) $24,000, d) $ 40,000, e) $44,000

Answers

business man's salary = x
employee's salary = y

x + 10y = 64000
x = 6y

(6y) + 10y = 64000
16y = 64000
y = 4000

x = 6(4000)
x = 24000

Answer: (c) $24,000

(−6)^2
Need halp please

Answers

This is an EXPONENT.

To do this all we need to do is multiply the base by itself how many times the power says.

(-6)² = (-6) × (-6) = 36

Recall that any negative number times another negative number is positive so that is why this would be positive.

So, (-6)² = 36

Hope I helped ya!!

(-6) x (-6) = **36**

Please help me with these 6 through 10 :)

Answers

6.) constant = 75

7.) open sentence = 6 + 22 = 28

8.) equation = 17 + b = 47

9.) solution = when x + 37 = 62, x = 25

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Can someone help please

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