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vampirchik [111]
3 years ago
9

Someone please HELP!?

Mathematics
1 answer:
jeka943 years ago
7 0
 A negative exponent just means that the base is on the wrong side of the fraction line, so you need to flip the base to the other side.

For example

x^{-2}=\frac{1}{x^2}

or

( \frac{2}{5} )^{-4}=( \frac{5}{2} )^4

***************************************
(8r^{-5})^{-3}

(8* \frac{1}{r^5} )^{-3} \\\\( \frac{8}{r^5} )^{-3}
 \\  \\ ( \frac{r^5}{8} )^3
\\\\ \mathrm{Apply\:exponent\:rule}:\quad *\left(\frac{a}{b}\right)^c=\frac{a^c}{b^c} \ \ \ \ \ \ \ \ \ \ \ \   *(a^b)^c=a^{bc}
 \\\\( \frac{r^{15}}{8^3} )
\\\\( \frac{r^{15}}{512} )

The answer is "D"


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Consider that x=5 and y=7. Is the sum of x + y rational, irrational, or neither irrational nor rational!
nasty-shy [4]
The sum of y+x, or 5+7, is rational.  This is because each integer(non fraction/decimal)is rational, it is also rational.
5 0
4 years ago
In quadrilateral ABCD, AD is congruent to BC, and AD is parallel to BC. Andre has written a
Dahasolnce [82]

Answer:

AD is Congruent to BC and it's given, (given just means that it was already said or stated, and you don't need to do the work to find it) Angle DAC would be congruent to angle BAC (if that doesn't work, rearrange them to look like angle CAB). AC would be congruent to DB. Triangle ADC would be congruent to triangle BCD by (since i don't know exactly which way the letters are arranged is would either be SAS or SSA) and that's because you know two of the sides are congruent to each other and one angle.

I tried hard to sketch out what the shape looked like based on the information given, and that's because I need a visual of what the shape looks like. Sorry, this took so long to answer.

5 0
1 year ago
Given h(x) = x^ - 2, what is the value of h(-3) ?<br><br> ^ = is exponent 2
ella [17]

Answer:

  • 1/9

Step-by-step explanation:

<u>Given</u>

  • h(x) = x^ - 2
  • h(-3) = ?

<u>Substitute x with -3</u>

  • h(-3) = (-3)^-2 = 3^-2 = 9^-1 = 1/9
3 0
3 years ago
Read 2 more answers
Hi please HELP ME I really need it
earnstyle [38]

Answer:

? = 14

Step-by-step explanation:

let us say that ? = x

7^x * 7^5^4 = 7^34

When you have a power to a power you multiply

7^x * 7^20 = 7^34

when you multiply common bases you add the power. since all the bases aer the same just look at the power

7^34-20 = 7^x

7^14 = 7^x

6 0
3 years ago
18s^2+2g-12+15g-9s^2
algol13
Answer:

9s^2 + 17g - 12

Explanation:

(basically combine like terms)

the s^2 are like terms, so that would get you 18s^2 - 9s^2 = 9s^2

then the g’s are like terms,
15g + 2g = 17g

then the -12 is all on its own

if you put it all together:

9s^2 + 17g - 12


4 0
3 years ago
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