All Answers 358543 Answers

+118733

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I think you mean inverse sin. Sometimes called arcsin
NOTE: inverse sin is totally different from (sin x) ^-1 which means 1/sinx

sin 30 ^o = 1/2 = 0.5
therefore
arcsin 0.5 = 30 ^o
or it might be written as
sin ^-10.5 = 30degrees

on a calc you press
asin 0.5=
or
inv sin 0.5 =

You just have to be very careful that the calculator is displaying degrees rather than radians. This is a common error.

MelodyOct 11, 2013

+118733

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yes, that is right.

MelodyOct 11, 2013

+40

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To get volime in this case would it be l(w)(h)?

OliveOct 11, 2013

+118733

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Density is mass divided by volume, does that help?

MelodyOct 11, 2013

+118733

0

Well,
How many beats in 1 minute?
How many beats in 2 minute?
How many beats in 3 minute?
How many beats in 10 minute?

How many minutes in an hour?
Do you get where I am going here?

MelodyOct 11, 2013

+118733

0

first you should recognise that these are all lines.

one solution means that the lines will cross each other
no solutions mean that they are parallel so the ?? will be the same
infinite solutions mean that they are the same line,

I hope this is enough to get you started.

MelodyOct 11, 2013

+118733

0

Remember that if the quadratic formula does not make sense
I mean the discriminate b ²-4ac < 0 then there are no solutions.

MelodyOct 11, 2013

+118733

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Sorry, this question does not make sense.

MelodyOct 11, 2013

Oct 10, 2013

+118733

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what is 60 percent of 5.2kg

60 divided by 100 x 5.2 kg

MelodyOct 10, 2013

+118733

0

you can't, there are no equal signs.

MelodyOct 10, 2013

+118733

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Jim Beam, your method is a good one although the answer should have been 38.3 x 10 ⁵ ,
also it should then be changed back to scientific notation 3.83 x 10 ⁶ OR just written as an ordinary number.

(3.4 x 10^6) + (4.3 x 10^5)
The best way to do this on a calc is
3.4 exp 6 + 4.3 exp 5
If you use the exp button DO NOT put in any 10s.

MelodyOct 10, 2013

+118733

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Find the x-intercepts for y=3x^2+19x-40
The equation of the x axis is y = 0
So plug this into the formula
You can do it the way Jim Beam said to get an approximation or you can just use the quadratic formula to get the exact answers.

MelodyOct 10, 2013

+118733

0

and a thank you to you too for your show of appreciation.
I am glad that I helped you.

MelodyOct 10, 2013

+118733

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9 1/8 what? And i assume you mean 1:50
anyway just multiply by 50 and keep the units the same.

MelodyOct 10, 2013

+118733

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The square root of the number of students.
Too bad if a some students need to be chopped into bits to acheive this.

MelodyOct 10, 2013

+118733

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Do you mean
1.24x10to the 5th divided by6.2x10 to the -third=?
Can you do it on your calc?
to put in 1.24x10 ₅
enter
1.24 exp 5
If the exponential is a fraction or negative, put it in brackets.

MelodyOct 10, 2013

+118733

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think about it

You know that 3 x 6 = 18
so how can you work out
3 x what = 18
I mean, how do you have to put the 3 and 18 together to get the 6 ?

Do the same for your queston.

MelodyOct 10, 2013

0

Subtracting fractions is really easy tbh
All you have to do is get the denominators to be the same and afterwards you just subtrat the numerators.
Multiplying fractions is obviously easier all you do is multiply the numerators across and then the denominators.
however, when dividing fractions always remember ((keep, change, flip)) its helps
The first fractions stays the same, the division sign turns into a multiplication sign and then you turn the last fraction into its reciprocal and just multiply across.
To find the answer to your equation you must solve for x. In other words just divide 2/4 and 1/2 which wold give you the value to ex.
HOPE THIS HELPED XX

GuestOct 10, 2013

0

to add exponential values the exponents must be =. so 3.4x10^6 becomes 34x10^5. add that to 4.3x10^5 to get 38.4x10^5

GuestOct 10, 2013

0

initial reaction is to set x=0 since the X intercepts are the values where X=0, since there's an exponent i think it gives you +40 and - 40. second reaction is to use a graphing calculator, plug in equation and look at table or graph.

GuestOct 10, 2013

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take the natural log of both sides to get x out of the exponent. so right side becomes 3x/5 * ln(6) go from there.
http://www.wtamu.edu/academic/anns/mps/math/mathlab/col_algebra/col_alg_tut45_expeq.htm

GuestOct 10, 2013

0

okay here is what you are gonna do to find slope

y(#2)-y(#1) / x(#2)-x(#1)

1-5
-2-3

this equals

-4
-5

giving you 4/5 the answer once you get used to it it isn't that bad

GuestOct 10, 2013

0

okay so you have 16z+3(24z-6)-(7+31z)
you must first distribute my teacher gave me a list when i was in pre-algebra
steps to solving multi step equations
~distribute
~clear fractions
~combine like terms(variables) on same side
~combine variables on opposite sides
~add/subtract
~multiply/divide

so you take 3 times 24, 3 times negative 6 and get 16z+72z-18-(7+31z)

now distribute the negative so you get 16z+72z-18-7-31z

got that far? Now it is pretty simple you add 16z and 72z getting 88z then subtract 31z getting 57z making it 57z-18-7

the final step is to take negative 18 and subtract 7 which equals -25 making the answer 57z-25

tadda!

GuestOct 10, 2013

+30

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piconjoOct 10, 2013

0

xboyd18:
a group of students needs to be seated in a square formation for a year book photo. how many students should be in each row

How many students are there?

GuestOct 10, 2013

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