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3 years ago

2x^2+15x=8factor or solve as indicated, show all work.please and thank u!

Mathematics

1 answer:

labwork [276]3 years ago

8 0

Answer: x= -8 or x = 1/2

Step-by-step explanation:

2x^2 + 15x = 8 Subtract 8 from both sides to let the whole equation equal 0

- 8 -8

2x^2 + 15x - 8 = 0 Now find two numbers that if you multiply them, their product will be -16 and their sum will be 15. An example is the numbers 16 and -1. 16 times -1 is -16 and 16 plus -1 is 15.

Rewrite the whole equation in this form,

2x^2 +16x - 1x - 8 = 0 Factor on the left side

2x ( x + 8) -1 (x + 8) = 0 Now factor out x + 8

(x + 8) (2x -1) = 0 Set each expression equal zero, because for the whole expression to equation to 0, either one of them or all of them have to equation zero.

x + 8 = 0 or 2x - 1 = 0

-8 -8 +1 +1

x = - 8 2x = 1

x = 1/2

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3 years ago

Read 2 more answers

82, 62, 95, 81, 89, 51, 72, 56, 97, 98, 79, 85 order from least to greatest find the The median of the lower half of the data an

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Answer:

The median of the lower half of the data was determined to be 67 while the median of the upper half of the data was determined to be 92.

Step-by-step explanation:

Step 1: Order from least to greatest

51, 56, 62, 72, 79, 81, 82, 85, 89, 95, 97, 98

Step 2: Determine the median of the lower half of the data

There are 12 numbers which means that there is going to be 6 numbers on both sides of the data. So using the first 6 numbers we will be able to determine the median of the lower half of the data.

51, 56, 62, 72, 79, 81

Since there is an even amount of numbers, that means that we will need to find the middle between the 3rd and 4th number. We can do that by adding them up together and dividing by 2.

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Step 3: Determine the median of the upper half of the data

So using the first 6 numbers we will be able to determine the median of the upper half of the data.

82, 85, 89, 95, 97, 98

Since there is an even amount of numbers, that means that we will need to find the middle between the 3rd and 4th number. We can do that by adding them up together and dividing by 2.

(89 + 95) / 2 = 92

Answer: The median of the lower half of the data was determined to be 67 while the median of the upper half of the data was determined to be 92.

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3 years ago

2x^2+15x=8factor or solve as indicated, show all work.please and thank u!​

2x^2+15x=8factor or solve as indicated, show all work.please and thank u!