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Mamont248 [21]
2 years ago
13

Simply the following expression

Mathematics
1 answer:
Lana71 [14]2 years ago
5 0

Answer:

\dfrac{4r^6}{st^8}

Step-by-step explanation:

(4r^{-2}st^4)(r^{-4}st^6)^{-2} =

Use laws of exponents to simplify the right set of parentheses.

= (4r^{-2}st^4)(r^{8}s^{-2}t^{-12})

Now use the law of exponents for a product of powers with the same base.

= 4r^6s^{-1}t^{-8}

Finally, use the definition of a negative exponent.

= \dfrac{4r^6}{st^8}

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Solve the following equation for x. x = -2 x = 2 x = -17 x = -7 (x - 5)/2 = -6
nordsb [41]

Step-by-step explanation:

x= -2,

(x - 5) / 2= -6

( (-2) - 5) / 2= -6

(-7) / 2 = -6

-3.5 = - 6

right hand side not equal to left hand side of this equation.so,x= -2 cannot exist for this equation.

x=2,

(x - 5) / 2= -6

(2 - 5) / 2= -6

(-3) / 2= -6

-1.5 = - 6

right hand side not equal to left hand side of this equation.so,x= 2 cannot exist for this equation.

x= -17

(x - 5) / 2= -6

( ( -17) - 5) / 2= -6

(- 22) / 2= -6

-11 = -6

right hand side not equal to left hand side of this equation.so,x= -17 cannot exist for this equation.

x= -7,

(x - 5) / 2= -6

( ( -7) -5) / 2= -6

(-12) / 2= -6

-6= -6

right hand side equal to left hand side of this equation.so,x= -7 exist for this equation.

8 0
3 years ago
O Mr. Math S. Fun is looking for his missing pair of
dalvyx [7]

Answer:

1/3

Step-by-step explanation:

add all of the totals including the missing pair

we now have 24

7+1 is 8

24 minus 8 is 16

24 can be split into 2 groups of 8

and we have 2/3 left. which makes our solution 1/3

3 0
2 years ago
Hey can you please help me posted picture of question :)
andriy [413]
The answer is the answer is C and F.

This is found by inserting the equation above into the quadratic formula or -b plus or minus the square root of b^2 - 4ac over 2a.

With that, you find that the first number is a -3, which eliminates choices B and D.

Then, solving the 4ac portion, you find that inside the square root the number is 29, which gives you the last two answer choices.

Hope this helps!
5 0
3 years ago
I need help please?!!!
Anastaziya [24]

Answer:

less than

Step-by-step explanation:

think of it as an aliigator who wants cookies. The alligator is. going to eat the side with more cookies. if he is not facing one side that means that it is lees than

7 0
3 years ago
There are 70 students in the school band. 40% of them are sixth graders, 20% are seventh graders, and the rest are eighth grader
Inessa05 [86]

Answer:

28

Step-by-step explanation:

40% 6th graders of 70 total = 28 6th graders

40% 6th graders + 20% 7th graders = 60%

100% - 60% = 40% 8th graders

40% are 8th graders therefore the answer is 28

7 0
3 years ago
Read 2 more answers
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