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Montano1993 [528]
3 years ago
9

Pls help Which two values are equivalent to 7^3x 7^-6 ?

Mathematics
1 answer:
IRINA_888 [86]3 years ago
3 0

Answer:

B. and D.

Step-by-step explanation:

When you multiply exponents, you add them

3 + (-6) = -3

The base always stays the same

{7}^{ - 3}

is one answer

{x}^{ - n}  =  \frac{1}{ {x}^{n} }

Do this formula for the question and you get 1/(7^3)

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PLEASEEEE HELPP!!!!!!!!
nevsk [136]

Answer:

C) 2400

Step-by-step explanation:

Combinations are a way to calculate the total outcomes of an event where order of the outcomes does not matter.

Computers = 10

Printers = 3

Scanners = 5

Telephone = 8

Copiers = 2

Possible outcome = 10 x 3 x 5 x 8 x 2 = 2400

5 0
3 years ago
Докажите тождество 3 n ( 3 m − 2 n ) + 6 m 2 = ( 6 m − 3 n ) ( 2 n + m ) .
valentina_108 [34]

Answer:

The answer is 0

Step-by-step explanation:

3n(3m-2n) + 6m^2= (6m-3n)(2n+m)

By expansion

9mn - 6n^2 + 6m^2 = 12mn + 6m^2 -6n^2 - 3mn

By collecting like terms

9mn - 12mn + 3mn - 6n^2 + 6n^2 + 6m^2 - 6 m^2 = 0

-3mn + 3mn=0

Therefore the simplification of the expansion gives us 0

5 0
4 years ago
Solve for x. <br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%7D%7B2%7D%20%20%3D%20%20-%207" id="TexFormula1" title=" \frac{
weeeeeb [17]

Answer:

x = -14

Step-by-step explanation:

\frac{x}{2} = -7

multiply 2 on both sides

the 2's cancel out on the fraction side, leaving x = -7(2)

multiply -7 and 2 to get -14

x = -14

4 0
3 years ago
Read 2 more answers
What is 361.31 minus 2.841 equals blank?????? please help!!!
Digiron [165]
<span>i think its 358.469 tell me if i wrong plz.

</span>
8 0
3 years ago
Read 2 more answers
Show how u got the answer 309×42
luda_lava [24]
                3            
                1
                390
              x  42
               -------
                1282
              1564
          ----------------
                       
the answer would be 16380
Hope this helped :)
4 0
3 years ago
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