Question

PLEASE HELP :)

Answer 1

@satellite73

Answer 2

\[\frac{ 7^{4} * 7^{6} }{ 7^{8}}\]

Answer 3

@satellite73

Answer 4

You subtract the denominator exponent from the top ones

Answer 5

So 7^4 - 8 and 7^6 - 8 etc. Then you do the actual division

Answer 6

@Mathlete407 b?

Answer 7

What's b? You never typed the answers in, since Im assuming it's multiple choice

Answer 8

yes it is.. let me give you the options..'

7^0
7^1
7^2
7^3

Answer 9

Ohh, I'm sorry, first you add the exponents that are on the numerator together, and THEN you subtract that from the denominator exponent. Sorry that mistake. So it would be &^4 + 6 = 7^10 - 7^8 = 7^2. So it would be c

Answer 10

Does that make sense? I apologize again for not reading it thoroughly at first

Answer 11

its ok :)

Answer 12

Simplify \[\frac{ 8^{-5} }{ 8^{-3} }\]

Answer 13

Ok, so the only thing you need to focus on at first is the exponents, don't pay attention to the 8. So -5 - (-3). Do you know what we do when we have a negative subtracted from a negative?

Answer 14

\[\text{Exponential division rule: }\frac{a^{x}}{a^{y}}=a^{x-y}\]\[\frac{8^{-5}}{8^{-3}}\rightarrow?\]

Answer 15

8^2?

Answer 16

Perfect!

Answer 17

Close. You messed up a bit on the exponents

Answer 18

\[\frac{ 1 }{ 8^{2} }\] ?

Answer 19

\[\frac{8^{-5}}{8^{-3}}\rightarrow8^{-5-(-3)}=8^{-2}\]Yes! :D Good job

Answer 20

Actually, it would technically 5 + 3, because when we have a negative minus a negative it becomes a positive. They cancel each other out. The real answer would be 8^8

Answer 21

its multiple choice.. these are the options..

one divided by the quantity eight squared
one divided by the quantity eight to the eighth power
8^2
8^8

Answer 22

D

Answer 23

How does a negative minus a negative become both positive...?
\[-x-(-y)\ne x+y\]

Answer 24

egative Exponent Rule: , this says that negative exponents in the numerator get moved to the denominator and become positive exponents. Negative exponents in the denominator get moved to the numerator and become positive exponents.

Answer 25

right so the answer is A because 8^-2 also means 1 over 8 to the power of 2 :)

Answer 26

right?

Answer 27

i dont know yet.. i havent submitted it..

Answer 28

i have a few more questions before i can submit it..

Answer 29

Which of the following is a rational number?

square root of 79, square root of 80, square root of 81, square root of 82

square root of 79
square root of 80
square root of 81
square root of 82

Answer 30

8^-2 is 1/8^2, yes

Answer 31

Which number above can you take the square root of leaving you with a whole number? That's what a rational number squared is

Answer 32

82?

Answer 33

?

Answer 34

Square roots with whole #s after solving are rational numbers

Answer 35

e.g. 16, root is 4; 25, root is 5; 169, root is 13

Answer 36

\[\text{The rule is }x\times x=y\]You're given a bunch of possible y's, now you need to find one that gives a rational x ☺

Answer 37

ok so 81 is correct! :)

Answer 38

Yes! ^_^

Answer 39

There are (2^6)^3 ⋅ 2^0 bacteria in a sample. What is the total number of bacteria in the sample?

2^2
2^3
2^9
2^18

Answer 40

so do you know the answer?

Answer 41

\[(2^{6})^{3}\times2^{0}\]\[\text{0 Exponent rule: }x^{0}=1\]\[(2^{6})^{3}\times2^{0}=(2^{6})^{3}\times?\]

Answer 42

262144

Answer 43

Whoa what o_o
Don't move that fast aha

Answer 44

So what did you get from 2^0?

Answer 45

1

Answer 46

Okay so now we have (2^6)^3\[(2^{6})^{3}\text{ Exponent muliplication rule: }(x^{a})^{b}=x^{a\times b}\]

Answer 47

2^18

Answer 48

So that gets you:\[2^{6\times3}=2^{18}=262144\]
Yep ^_^

Answer 49

so the answer is d?

Answer 50

Which decimal number best describes the fraction fraction 77 over 6?

A terminating decimal 12.83
A repeating decimal 12.83 with a bar 3?
A terminating decimal 12.82
A repeating decimal 12.82 with a bar 2

Answer 51

Yeah, the answer is D ☺

Sorry, I gotta go now > <

Answer 52

aw ok.. please come back tomorrow :)

Answer 53

No problem ^_^ I'll try :D

Answer 54

ok! :)