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jeyben [28]
2 years ago
15

Simplify (2x 3)(x – 4) = a. 2x2 5x – 12b. 2x2 5x 12c. 2x2 – 5x – 12d. 2x2 – 5x 12

Mathematics
1 answer:
nirvana33 [79]2 years ago
3 0
I hope this helps you

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I need help im stuck
Katyanochek1 [597]

Answer:

4712.4

Step-by-step explanation:

I got the same question a few days ago.

The volume is πr^2 * h / 3

r = 15

h =  20

225π * 20 / 3

1500π

It's 4712.38898

Round to 4712.4

6 0
3 years ago
Type the answers in the boxes below.
Vaselesa [24]

Let m and h represent hours Mai spends mowing and hauling, respectively. Then (m+h) will be the number of hours Priya spends babysitting. In order for their earnings to be equal, we must have  

 7m +14h = 8.40(m+h)

 Subtract 7m+8.40h:  5.60h = 1.40m

 Divide by 1.40:  m = 4h

Then the total number of hours worked by either person is

 m + h = (4h) +h = 5h

When only whole numbers of hours are worked, the smallest number of hours that will make earnings equal is 5h, with h=1, or 5 hours. In that time, each will earn 5×$8.40 = $42.

Therefore, each of them must work 5 hours and earn $42 before they go to the movies and Mai will work 4 hours mowing and 1 hour hauling.

5 0
2 years ago
Read 2 more answers
Megan purchased 12 square yards of flooring for a total of $432. What was the price of this
castortr0y [4]

Answer:

$5184

Step-by-step explanation:

1 per square foot =$432/1

12 square =12×$432/1

$5184

3 0
3 years ago
Read 2 more answers
Which of the following inequalities is correct? -|-4| > |-3| -|1| < -|-5| |-9| > |-12| -|-7| > -|-10|
emmasim [6.3K]

Out of four given inequalities the correct inequality is -|-7| > -|-10|

<u>Solution:</u>

Need to determine which of the given inequality is/are correct from given four options.

lets first understand what is mod of any real number "x" that is |x| means.

|x| = |-x| = absolute value of x ignoring its sign = x

let’s check each option

<em><u>Option 1:</u></em>

-|-4| > |-3|  

|-4| = 4, So - |-4| = -4

And |-3|  = 3

As -4 cannot be greater than 3

Hence inequality -|-4| > |-3| is incorrect.

<em><u>Option 2:</u></em>

-|1| < -|-5|  

|1| = 1, so - |1| = -1 and |-5| = 5, so -|-5|   = -5

As -1 cannot be less than -5 (negative sign)

Hence inequality -|1| < -|-5| is incorrect.

<em><u>Option 3:</u></em>

|-9| > |-12|  

|-9| = 9 and |-12| = 12  

As 9 cannot be greater than 12  

Hence inequality |-9| > |-12| is incorrect.

<em><u>Option 4:</u></em>

-|-7| > -|-10|

|-7| = 7, so - |-7| = -7 and |-10| = 10, so -|-10|   = -10

As -7 is greater that -10 (negative integers).

Hence inequality -|-7| > -|-10| is correct.

5 0
3 years ago
Factor the Polynomial? Please show steps. Thanks <br> 9x^2-25
schepotkina [342]

Fully factored, this polynomial is (3x + 5)(3x - 5).

To factor this, you can use the difference of two squares rule. In that rule, you take the square root of the first term and the square root of the second term. You then put them in two parenthesis together, one of which has an addition sign and one has a subtraction. Like this:

(Sqrt(1st) + Sqrt(2nd))(Sqrt(1st) - Sqrt(2nd)).

So we start by taking the square root of 9x^2, which is 3x. Then we take the square root of 25, which is 5. Now we place them in the parenthesis above.

(3x + 5)(3x - 5)

This is your final answer.

5 0
3 years ago
Read 2 more answers
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