Asked by misty

molly paid 8% in sales tax on her holophone,a phone that shows the person you're talking to in 3D. if molly paid $416 in sales tax on the phone, what was its pre-tax price?
Answered by Ms. Sue
0.08x = 416

Solve for x.

Answered by misty
i am bad at math
Answered by Damon
416/.08 then

That sounds like quite a lot, but I suppose a 3D holophone might be very expensive. On the other hand you might have meant she paid $4.16
Answered by misty
do i do 0.08 /0.08=x 0.08/416=?
Answered by misty
did u go to seeds?
Answered by Damon

you do
.08 x /.08 = 416/.08

which is

1 x = 416/.08

which is
5200
Answered by Damon
seeds ?
Answered by misty
do u go to seeds for homeschool?
Answered by misty
so it is $5200?
Answered by Damon
LOL, no, I went to Exeter then MIT where I graduated in physics in 1959 then got a PhD in engineering in 1968. I however home schooled my niece in math, physics, and chemistry so have some experience with home schooling.
Answered by Damon
Yes :) assuming that she really paid 416 in sales tax.
Answered by misty
ok i now a Damon that gos to seed with me
Answered by misty
sorry know
Answered by Damon
Mustard Seed home school ? I Googled it.
Answered by misty
what is square yard? how do i do it?
Answered by misty
no seeds of grace
Answered by misty
u are 50?
Answered by misty
i am 14
Answered by Damon
a square yard is a square one yard on a side at its most simple geometry. However it can be any plane figure that has that same area such as a circle of radius
pi r^2 = 1
or
r = sqrt (1/pi)
Answered by misty
HELP ME PLZ
Answered by Damon
let's see now
I graduated grade 12 in 1955
so in 1955 I would have been about 12 + 5 = 17

2015 - 1955 = 60 years ago
+ already 17
= 77 years old approximately (and in fact correctly :)
Answered by misty
1 square yard = 9
A square mile B square feet
C square inches D square kilometers
E square meters
Answered by misty
u are 77 my mom is 69
Answered by misty
my real mom is 45
Answered by Damon
1 square yard = 3 feet one one side times 3 feet on the other side = 9 square feet indeed

a square mile = 5280 feet times 5280 feet
= 27,878,400 square feet
Answered by misty
so it is A?
Answered by Damon
1 square foot = 12 inches * 12 inches = 144 square inches
so
1 square mile = 27,878,400 square feet (144 square inches/square foot)
= 4,014,489,600 square inches
Answered by misty
ok is it B?
Answered by Damon
1 square yard = 9 square feet. That is B
Answered by misty
so 36 inches =1 yard
Answered by Damon
Remember I said
1 square yard = 3 feet one one side times 3 feet on the other side = 9 square feet indeed
Answered by Damon
Yes, 36 inches = 1 yard
Answered by misty
i am bad at math!!!!!!!!1
Answered by misty
so i do 36*36?
Answered by Damon
You are doing fine.

but there is a method to changing units like this

if you have 9 kittens

and 3 kittens/house

then you have
9 kittens ( 1 house/ 3 kittens)

kittens cancel
and you have (9/3) houses
= 3 houses
Answered by Damon
if you started with 3 houses and 3 kittens per house then

3 houses ( 3 kittens/house)
houses cancel and I have
3*3 = 9 kittens
Answered by misty
i do not git it :(
Answered by Damon
yes
1 yard = 3 feet
1yard * 1 yard = 1 yard square = 3 feet*3 feet
= 9 feet square
Answered by misty
so it is 1296 square inches?
Answered by Damon
Well I am sure you know that if you have 3 kittens per house and 3 houses that is 9 kittens :)
Answered by misty
so it is C? squared inches?
Answered by Damon
36 * 36 = 1296 square inches
right
Answered by misty
i hate math
Answered by misty
i have 21 problems
Answered by Damon
But your original question was:

1 square yard = 9

A square mile
B square feet
C square inches D square kilometers
E square meters

The answer is B
1 square yard = 9 square feet
Answered by misty
i am just bad at it i just want to give up
Answered by misty
20 problems to go
Answered by Damon
well, let's see the next one.
Type it carefully.
Answered by misty
ok
1 square kilometer=100
A square hectometers
B square dekameters
C square meters
D square decimeters
E square centimeters
Answered by misty
i first do
Answered by misty
1 cent =10 dec. right?
Answered by misty
now i do
Answered by misty
1 cent=20 meters.right?
Answered by misty
are u there?
Answered by misty
have stop helping me?
Answered by Damon
a square kilometer is
1000 meters * 1000 meters = 1,000,000 meters squared

1 hectometer/100 meters
1 dekameter/ 10 meters
etc


100 square hectometers = 100 * 100 meters * 100 meters = 1,000,000 meters squared
right
so A
Answered by Damon
Sorry, grandkids just came home from school.
Answered by misty
how did u git that?
Answered by misty
it is ok
Answered by Damon
I just tried them in order

1 hecktometer = 100 meters
100 * 100 = 10,000 square meters
so 100 of them is
1,000,000 square meters
which is a square kilometer
Answered by misty
ok i git it
Answered by misty
how many square meters are in 280 square centimeters?
Answered by misty
so i divied
Answered by misty
280/1000?
Answered by Damon
very few :)
1 square meter = 100 cm * 100 cm = 10,000 cm^2

so (1 m^2/10,000) cm^2

280 cm^2 * (1 m^2/10,000 cm^2)

= 0.028 m^2
Answered by misty
=0.28
Answered by misty
ok so it is 0.028
Answered by Damon
divide by 10,000 not 1,000 :)
answer is .028
Answered by misty
i see
Answered by misty
convert 1.2 liters to milliliters.
Answered by misty
so i dived 10000/1.2?
Answered by misty
no i motpliy 10000*1.2
Answered by misty
=12000
Answered by misty
right?
Answered by Damon
1.2 Liters ( 1000 mL/L) = 1,200 mL
Answered by misty
yea
Answered by Damon
there are 1000 mL in a L
that is what milli means, one thousandth
Answered by misty
write x times15 the algebra way. select the best possible choice.
A 15/x
B x *15
C 15x
D x15
E x(15)
Answered by misty
i think it is B or C or D
Answered by Damon
15 x which is c
Answered by misty
it is C
Answered by Damon
Yes
Answered by misty
yes!!!!!!!!!!!!11
Answered by misty
write x divided by 3 the algebra way.
A x/3
B x(3)
C 3/x
D 3x
E x/3
Answered by misty
i think it is A
Answered by misty
do u have fb?
Answered by Damon
I think it is E
x/3 is x over 3
Answered by Damon
I can not take you to facebook, rules.
Answered by misty
ok why?
Answered by Damon
tutors are supposed to interact with student right here.
Answered by misty
i know just asking
Answered by misty
no why do u think it is E
Answered by Damon
Interesting, A and E are the same. typo ?
Answered by misty
yes
Answered by misty
i can not find the dividshon sinbol
Answered by Damon
oic, there is none, / is always used
but division symbol not normally used in algebra
x/3 would be normal
or

x
---
3

maybe :)
Answered by misty
are u a techer?
Answered by misty
the one with 2 dots one on the top and one on the dontom
Answered by misty
so put A
Answered by Damon
I know what you mean, but it is not used in algebra

I was a college professor, engineering.
Answered by misty
so just put A?
Answered by Damon
the one with the /
is right :)
Answered by misty
tell whether each pair of expressions below is equivalent.
x+4/7 and 4/7 +x
Answered by misty
i think the are equivalent
Answered by Damon
Yes they are equivalent
Answered by misty
x0.03 and 0.03x
Answered by misty
the are equivalent right?
Answered by Damon
I think so although I would have written
x * 0.03

0.03x is clear
x0.03 is confusing
Answered by misty
so yes
Answered by Damon
I guess so, but I would never write x0.03
Answered by misty
ok what would u write?
Answered by Damon
I would go with only 0.03 x
Answered by misty
convert the percent to a decimal
Answered by misty
12 1/4%
Answered by Damon
divide by 100

8% = 8/100 = 0.08
Answered by misty
sorry what?
Answered by Damon
to get decimal from percent
divide percent by 100
Answered by Damon
better start a new question. This scrolling is getting a bit much.
Answered by misty
so it is 0.1225?
Answered by misty
ok i will call it math101. ok?
Answered by Damon
12.25 % = 0.1225 yes