Question

Which of the following represents ninth root of x to the seventh power in exponential form?

x^9/7
x^7/9
9x^7
7x^9

Answer 1

x^7/9

Answer 2

thank you!!! can you help me with one more?

Answer 3

sure :)

Answer 4

Find the volume of a rectangular prism if the length is 4x, the width is 5x, and the height is x2 + x + 2. Use the formula
V = l ⋅ w ⋅ h, where l is length, w is width, and h is height, to find the volume.

Answer 5

V=4x*5x*(x2+x+2)
V=20x2(x2+x+2)
V=20x4+20x3+40x2

Answer 6

ohhhhh okay!!! thank you so much!
can you help me with just one more thing?

Answer 7

ok

Answer 8

Rationalize the denominator of \[\frac{ \sqrt{-49} }{ (7 - 2i) - (4 + 9i)}\]

Answer 9

the choices are
\[\frac{ -49 + 2i }{ -40 }\]
\[\frac{ 49 + 21i }{ 58 }\]
\[\frac{ 77 + 21i }{ -2 }\]
\[\frac{ -77 + 21i }{ 130 }\]

Answer 10

the answer is -77+21i/130 as
\[\frac{ \sqrt{-49}}{ (7-2i)-(4+9i) }\]
\[\frac{ \sqrt{-1}.\sqrt{49} }{ (7-2i)-(4+9i)}\]
\[\sqrt{-1}\]=i

\[\frac{ \sqrt{49}i }{ (7-2i)-(4+9i)}\]
\[\frac{ 7i }{ 3-11i}\]
\[\frac{ -77+21i }{ 130 }\]

Answer 11

THANK YOU!!! I hadn't been able to figure that out at all!

Answer 12

no problem :)