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3 years ago

Solve by Completing the Square x^2 + 8x – 2 = 0

Mathematics

1 answer:

Bingel [31]3 years ago

3 0

x^2+8x ____ = 2

x^2+8x+16=2

(x+4)^2 =2

Square root both sides

x+4=square root of (2)

subtract four form both sides

x= square root of (2) - 4

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Ling wants to determine the average distance she travels each day in her car. She records the odometer reading, which measures t

erica [24]

Answer:

$Mean = 10724.29\ mi$

Step-by-step explanation:

Given

$n = 7$ --- days

See attachment for odometer readings

Required

The mean of the distance

Mean is calculated as:

$Mean = \frac{\sum x}{n}$

So, we have:

$Mean = \frac{10150 + 10211 + 10424 + 10769 + 10884 + 11155 + 11477}{7}$

$Mean = \frac{75070}{7}$

$Mean = 10724.2857143$

Approximate

$Mean = 10724.29\ mi$

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2 years ago

What is 2 x 24/4 (24/4 is a fraction) pls help I will mark brainliest and say thanks AND rate five stars with 10 points

NISA [10]

Answer:

Step-by-step explanation:

Well, to make things easier, we can first note that 24/4 is equal to 6. This helps because integers are easier to work with compared to fractions. Next, multiplying 2 by 6, we get 12.

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3 years ago

Which of the following numbers is not between -2.6 and 1.3 on the number line?

Naya [18.7K]

Answer:

1.4

Step-by-step explanation:

-2.6---------------1.3

0.5 is between

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3 years ago

In need of help please

Alisiya [41]

Answer:

Step-by-step explanation:

1-4

n=30/1

so it would be (t,n) instead of (x,y) respectively

so the first would be (1,30)

2. n=30/2

second would be (2,15)

3. n=30/3

third would be (3,10)

n=30/4

fourth would be (4,7.5)

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2 years ago

During a 5-year period, 48% of snowstorms in a certain city caused power outages. Thirty dash nine of the snowstorms did not

beks73 [17]

Answer:

Step-by-step explanation:

48% of snowstorms caused power outages, which means 52% did not.

Therefore, 39 is 52% of all snowstorms.

39 = 0.52x

x = 75

There were 75 snowstorms over the 5-year period.

4 0

3 years ago