2x squared + 9x=-5 i need to solve for x

Answers

Answer 1

Answer: $2x^2+ 9x=-5 \n \n2x^2 + 9x+5 =0 \n\na=2, \ \ b=9 , \ \ c=5 \n\n\Delta =b^2-4ac = 9^2 -4\cdot 2\cdot 5 = 81-40=41 \n \nx_(1)=(-b-√(\Delta) )/(2a)=(-9-√(41))/(2\cdot 2 )=(-9-√(41))/( 4 )\n\n x_(2)=(-b+√(\Delta) )/(2a)=(-9+√(41))/(2\cdot 2 )=(-9+√(41))/(4 )$

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Simplify completely quantity 4 x squared minus 32 x plus 48 all over quantity 3 x squared minus 17 x minus 6.

Answers

4x^2-32x+48
__________
3x^2-17x-6
⬇
4(x^2-8x+12)
__________
3x^2-17x-6

Answer:

$(4(x-2))/(3x+1)$

Step-by-step explanation:

i got it right on the test but I don't know the steps of solving it sorry

50 POINTS !!!!
HELP ME PLZZ I NEED HELP WITH THIS!!

Answers

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Answer: 5.50

Step-by-step explanation:

1.50 + 1.00 = 2.50 . 8.00 - 2.50 = 5.50

Which two statements are correct when simplifying this expression?

−7(9x − 5)

Answers

Answer:

-63x+35

Step-by-step explanation:

-7 x 9x is -63x

-7- -5=35

-63x+35

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Write this decimal as a percent: 2.1.

Answers

To turn a decimal into a percent, simply multiply by 100 (move the decimal 2 places to the right...

2.1 x 100 = 210%

The data set below represents the ages of 36 executives. Fine the percentile that corresponds to an age if 36 years old.

Answers

Answer: The percentile that corresponds to an age of 36 years old in the given data set is approximately 22.22%.

Step-by-step explanation:

To find the percentile that corresponds to an age of 36 years old in a data set representing the ages of 36 executives, we can use the following steps:

Step 1: Arrange the data set in ascending order.

- Let's assume the data set is as follows (in ascending order): 28, 30, 31, 32, 33, 34, 35, 36, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63.

Step 2: Calculate the rank of the given age.

- The rank is the position of the given age within the data set.

- In this case, the given age is 36 years old, and its rank is 8 because it is the 8th value in the data set.

Step 3: Calculate the percentile using the rank and the total number of data points.

- The percentile can be calculated using the following formula:

Percentile = (Rank / Total number of data points) x 100

- In this case, the total number of data points is 36 (since there are 36 executives' ages in the data set).

- Plugging in the values, we get:

Percentile = (8 / 36) x 100

Percentile ≈ 22.22 (rounded to two decimal places)

Each side length of a triangle is 4 cm. What type of triangle is it?