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fiasKO [112]
3 years ago
5

What expression is equal to 6(-3m) times 4

Mathematics
1 answer:
ololo11 [35]3 years ago
8 0

Answer:

-18x4

Step-by-step explanation:

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Find the volume of the cylinder<br> Type an exact answer in terms of pi
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Answer:

648pi

Step-by-step explanation:

V=pi*r^2*h

V=pi*9^2*8

V=pi*81*8

V=648pi

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I need help with a problem ... 1. 5x +12x I need it in combine like terms
Strike441 [17]
Both numbers have the variable x so you add 5 and 12 which gives you 17 and you need to write the variable. The answer is 17x
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(2x + y)2 – (3x – 2y)2 + (x – 4y)(x + 4y<br>11​
Vinvika [58]

Answer:

Step-by-step explanation:

(a+ b)² = a² +  b² + 2ab

(2x + y)² = (2x)² + y² + 2*2x *y

             = 4x²  + y² + 4xy

(a- b)² = a² + b² - 2ab

(3x - 2y)² = (3x)² + (2y)² - 2*3x *2y

              = 9x² + 4y² - 12xy

(a - b)(a +b) = a² - b²

(x - 4y(x + 4y) = x² - (4y)²

                     = x² - 16y²

(2x + y)² - (3x - 2y)² + (x - 4y)(x +4y)

  = 4x²  + y² + 4xy - (9x² + 4y² - 12xy) + x² - 16y²

  = 4x²  + y² + 4xy - 9x² - 4y² + 12xy + x² - 16y²

  = 4x² - 9x² + x²  + y² - 4y² - 16y²+ 4xy + 12xy

 =    -4x² - 19y² + 16xy

8 0
2 years ago
22
dalvyx [7]

The first digit may be 1 or 8.

The second digit may be 1, 2, 4, 8.

The third digit may be 1, 3, 5, 7, 9.

There are 2\times4\times5=40\:variants

The probability that this is the correct code is \frac{1}{40}

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2 years ago
What is the formula to find a simple interest rate
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Simple interest formula: A = P(1 + rt) where P is the Principal amount of money to be invested at an Interest Rate R% per period for t Number of Time Periods. Where r is in decimal form; r=R/100; r and t are in the same units of time.
4 0
3 years ago
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