4 years ago

Simplify the expression where possible. (r^-3 s^2 t)^4

Mathematics

2 answers:

lisabon 2012 [21]4 years ago

8 0

Answer:

$\frac{(s^8t^4)}{r^{12}}$

Step-by-step explanation:

Assuming that you tried to write:

$(r^{-3} s^2 t)^4,$

we can multiply the 4 on the outside of the parenthesis to all the terms. Multiplying, we get

$(r^{-12}s^8t^4)$

Because you don't want any negative powers in the top, we can move it down to get:

$\frac{(s^8t^4)}{r^{12}}$

Eduardwww [97]4 years ago

8 0

Answer:

there is no sign in between the two terms in the parenthese, maybe a google search on the properties of exponents would help because that's what this seems like

Step-by-step explanation:

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Ellen has a bag with 3 red marbles and 2 blue marbles in it. She is going to randomly draw a marble from the bag 300 times, putt

sweet [91]

Answer:

No. of times Ellen draws a blue marble = 120

Step-by-step explanation:

No. of red marbles = 3

No. of blue marbles = 2

$\text{Probability of drawing a blue marble = }\frac{\text{No. of possible outcomes}}{\text{Total no. of outcomes}}\\\\P(B)=\frac{2}{5}\\\\No. of draws (n) = 300\\\text{So, total probability = }n\times P(B)\\\\=100\times \frac{2}{5}=120.$