2 years ago

What is the value of the right rectangular prism

1 answer:

6 0

Hello!

To find the area of a rectangular prism you do 2(lw + lh + wh)

Put in the values

2(9 * 2 + 9 * 6 + 2 * 6)

2(18 + 54 + 12)

2(84)

2 * 84 = 168

The answer is 168 cubic inches

Hope this helps!

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Larry Mitchell invested part of his $25,000 advance at 2% annual simple interest and the rest at 3% annual simple interest. If h

alexandr402 [8]

Answer:

$1000 at 3%
$24000 at 2%

Step-by-step explanation:

Let x represent the amount invested at 3%. Then the total interest earned is ...

0.03x +0.02(25000 -x) = 510

0.01x = 10 . . . . . . . . . . . . subtract 500, collect terms

x = 1000

Mitchell invested $1,000 at 3% and $24,000 at 2%.

3 0

2 years ago

What is the difference of the polynomials [m²n²-7]-(mn+4)

AleksAgata [21]

You can do addition and substraction operations with polynomials similarly as with simple real numbers.

First of all you have to open brackets and then you can add numbers (-7-4=-11). Then the result is following:
$(m^2n^2-7)-(mn+4) =m^2n^2-7-mn-4=m^2n^2-mn-11$