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3 years ago

5

Please help me this brought my grade down and I need to get it up by next week please please help im giving all my points away f

or it

1 answer:

sergiy2304 [10]3 years ago

3 0

Answer:

Step-by-step explanation:

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See the file below to see my question :)

RideAnS [48]

9514 1404 393

Answer:

a = 3
b = -18

Step-by-step explanation:

Using the least common denominator, we have ...

$2-\dfrac{x+1}{x-2}-\dfrac{x-4}{x+2}\\\\=\dfrac{2(x-2)(x+2)-(x+1)(x+2)-(x-4)(x-2)}{(x-2)(x+2)}\\\\=\dfrac{2(x^2-4)-(x^2+3x+2)-(x^2-6x+8)}{x^2-4}\\\\=\dfrac{(2-1-1)x^2+(-3+6)x+(-8-2-8)}{x^2-4}=\boxed{\dfrac{3x-18}{x^2-4}}$

The values of a and b are ...

a = 3

b = -18

3 0

4 years ago

10 men who work 9hours per day, complete half of a work in 6days. How many days required for 15 men who work 12 hour per day to

S_A_V [24]

Answer:

So, you need 3 days approximately

Step-by-step explanation:

We will use Chain Rule to solve this question.

According to Chain Rule, the work efficiency remains constant.

• WWF×TWWF×T= Constant

• Here W = Work Done, WF = Workforce, T = Time.

Let the number of days needed be 'x'.

Applying Chain Rule,

10×9×6= 15×12×(x)

Or, x=3x=3 day

So, you need 3 days approximately.

Please mark me brainliest

7 0

3 years ago

David makes $16.40 per hour. Any hours worked over 40 hours in a week are paid at time-and-a-half. David worked 47 hours last

Maurinko [17]

Answer:

A: $656 B: $24.6 per hour, $172.2 total overtime pay. C: $828.2

Step-by-step explanation:

A: multiply 16.4 times 40

B: <u>16.4 / 2 = 8.2</u> <u>8.2 + 16.4 = 24.6. </u> <u>24.6 times 7 is 172.2</u>

C: Add overtime pay and regular pay to get total gross pay.

8 0

2 years ago

Read 2 more answers

For the function F defined by F(x)=x^2-2x+4 find F(2b-1).

Leni [432]

Answer:

F(2b-1) = 4b² - 6b + 4

Step-by-step explanation:

Replace all the x with 2b-1

F(x) = x² - 2x + 4

F(2b-1) = (2b-1)² - 2(b) + 4

= 4b² - 4b + 1 - 2b + 4

= 4b² - 6b + 4

5 0

3 years ago

Write an equation in slope-intercept form that goes through the point (5, -3) and is parallel to y = 3x - 1.

Nesterboy [21]

Answer:

$y = 3x -18$

Step-by-step explanation:

For this case we have this point given (5,-3) and we want to create an slope intercept formula given by:

$y = mx +b$

And this equation needs to be parallel to y= 3x-1 so then the slope needs to be equal m =3 and then we can use the point given to find the intercept b like this:

$-3 = 3*5 +b$

$b = 3-15=-18$

And the formula for the slope would be given by:

$y = 3x -18$

6 0

4 years ago