Question

Solve a couple questions and MEDALS will be rewarded!!!!! :p

Answer 1

-(6)^-1

a) 6
b) 1/6
c) -1/6
d) -6

Answer 2

try it on a calculator

Answer 3

I did, all it says is -.166666666666666666666667

Answer 4

Help plz

Answer 5

I think its C

Answer 6

okay now do 1/6 on a calculator

Answer 7

i think its c too

Answer 8

Simplify the expression

(3)^10(3)^-9

a) 3
b) 1/3
c) 19
d) 1

Answer 9

do it on a calulator

Answer 10

My calculator doesn't do that kind of stuff

Answer 11

get a new calulator.

you can do it without a calculator

10^a times 10^b = 10^(a + b)

Answer 12

here for you you have 3^10 times 3^-9 = 3^(10 + (-9)) =3^1 = 3

Answer 13

\[(3)^{10}\times(3)^{-9}=(3)^{10-9}=(3)^1\]

Answer 14

Find the simplified form of the expression. Give your answer in scientific notation.

(3 x 10^8)(8 x 10^-4)

a) 2.7 x 10^16
b) 1.2 x 10^56
c) 1.2 x 10 ^16
d) 2.7 x 10^15

I think this one is D? or A?

Answer 15

Sorry that question is wrong I got two question mixed up, it should say:

(3 x 10^8)(9 x 10^7)

Same answer choices though

Answer 16

okay well multiply the 3 and 9 first to give

27 x (10^8)(10^7)

now add the exponents (8 and 7

27 x 10^15

2.7 x 10^16

Answer 17

\[(3 \times 10^8)\times(9 \times 10^7) =3*3^2 *(10^{8+7})\]

Answer 18

The other is (3 x 10^6)(8 x 10^-4)

a) 1.1 x 10^3
b) 2.4 x 10^3
c) 1.1 x 10^-23
d) 2.4 x 10^-23

I was almost there just the exponent was one off lol

Answer 19

I think this one is B

Answer 20

i think your right. If your on a windows PC you can get the calculator up on there, click on view in the top left and go on "scientific"

Answer 21

Ok, hold on I have a few more questions but let me see if I have a caculator

Answer 22

Astronomers measure large distances in light years. One light years is that light can travel in one year, approximately 5.88 x 10^12 miles. Suppose a star is 1.23 x 10^2 light years from Earth. In scientific notation, approximately how many miles is it?

a) 12.3 x 10^12
b) 7.23 x 10^13
c) 7.23 x 10^14
d) 5.88 x 10^12

Answer 23

(t^-4)^-9t^2

a) t^26
b) t^-26
c) t^38
d) t^-38

Answer 24

HELP

Answer 25

I think the first one is C and the other is kinda confusing

Answer 26

Thanks a lot guys and I'm pretty sure the other is B, but what ever