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MelodyOct 17, 2013

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There is no questin here.

MelodyOct 17, 2013

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what is 4x^2+0x+25

0 lots of anything is nothing

so the answer is 4x^2+25

MelodyOct 17, 2013

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What is 6 power of 6/ 6 power of negative 5 times 2???

do you mean

[ 6 ⁶ / 6 ^-5 ] * 2

It is 6 ^6--5 *2

= 6 ¹¹ * 2

= 2 * 6 ¹¹

= you can finish it.

MelodyOct 17, 2013

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To solve means to find the unknown side. The cosine theorem should be applied: b^2 = (14.3)^2 + (9.4)^2 - 2*14.3*9.4* cos 33. Then just extract root.

[input](14.3)^2 + (9.4)^2 - 2*14.3*9.4* cos (33)[/input]

b ~ 8.2

scrutinizerOct 17, 2013

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I don't know what you mean AND you cannot take the log of a negative number.

MelodyOct 17, 2013

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When you multiply fractions first right them upright, not sideways like you have to on the computer.
then, simpliy multiply the tops and put the answer on the top
and multiply the bottoms and put the answer on the bottom

(1.2/294.15) ( x / 838.15)

top 1.2*x
bottom 294.15 * 838.15

answer =[ 1.2 / ( 294.15 * 838.15) ] x

I haven't explained very well but hopefully you can understand.

MelodyOct 17, 2013

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The whole task can be divided into 2 logical segments:
the description of Earl's age 11 years ago and the alternative description of the same by adding some details. Let's x be the current age, then his age 11 years ago would be x - 11. This is the first segment. Let's move on to the second one, namely which specifies his age 11 years ago: it says that it was one fifth of the one after 5 years from now, so we can write that as 1/5(x + 5). By making them equal we get the equation x - 11 = 1/5(x + 5), from which x = 15 years.

scrutinizerOct 17, 2013

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The question is in Portugese, this is the translation.

What is the number 1283 in scientific notation?

You need just one non-zero digit in front of the point so it'll start with 1.283

1283 is a big number, bigger than 1 so the power will be positive
now the point moved 3 places so the power is +3

so
1.283 * 10 ³

If it was a little number, smaller than 1, it would have been a negative power.

NOW FOR THE PORTUGESE TRANSLATION (from google) I hope it makes sense.
------------------------------------------------------------------------------------------------------------------
AHORA A LA TRADUCCIÓN PORTUGUÉS (de google) Espero que tenga sentido.

La cuestión es en portugués, esta es la traducción.

¿Cuál es el número 1283 en notación científica?

Sólo se necesita un dígito diferente de cero delante del punto de lo que va a empezar con 1.283

1283 es un número grande, más grande que 1 por lo que la potencia será positiva
ahora el punto mudó 3 lugares por lo que la potencia es 3

así
1.283 * 10 [sup] 3 [/ sup]

Si se trataba de un pequeño número, menor que 1, que habría sido una potencia negativa.

MelodyOct 17, 2013

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I haven't finished it but you start by using the identity

tan(a+b) = [tan(a) +tan(b)] / [1- tan(a)tan(b)]

Do the substitution, then use arc sin
dont forget to consider the angle restrictions.

MelodyOct 17, 2013

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first, there is no e on the mathematical pi.

4 times pie =s+5pie

4pi =s+5pi

you just need to subtract 5pi from both sides to get the value of s.

MelodyOct 17, 2013

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MelodyOct 17, 2013

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huh?

do you mean

asin 0.5 =

or in another calc maybe

inv sin 0.5 =

You do need to make sure your calculator is set to degrees or radians - whichever you are working in.
The answer to this is 30 degrees because
sin 30 degrees = 0.5

MelodyOct 17, 2013

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f(x)=480(0.83)^t t=5

I think you have made a copy error
it should be

f(t)=480(0.83)^t t=5

f(5)=480(0.83) ⁵
[/sup]
= 189 animals

MelodyOct 17, 2013

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I'm sorry I don't understand what you are asking. Your question doesn't make sense.
An interval is not a point. 0 could be the beginning or end of an interval but it cannot be an interval.

MelodyOct 17, 2013

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ok first

(2+h) ³

=(h+2) ³

=(h+2)(h+2)(h+2)

=(h+2) (h ²+4h+4)

= h ³ +4h ² + 4h + 2h ² + 8h + 8

= h ³ +6h ² + 12h + 8

This is not the whole question of course,hopefully you can so the rest of the simplifying yourself

I am actually wondering if the question is copied correctly, you have =1 are you sure it is not =0 ?

MelodyOct 17, 2013

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hint

-2(x+y) = -2x+-2y = -2x-2y

-(4y-2) = -1(4y-2) = -1*4y - -1*2 = -4y + 2

5x-(4y-2) = 5x -1(4y-2) =........= 5x - 4y + 2

hopefully I have given you enough hints to work your question out by yourself

MelodyOct 17, 2013

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Use the following set of numbers to Calculate the (∑x) ²
45, 96, 33, 16, 35, 81, 71, 12, 28

x refers to each score
∑ means sum of

so very literally this means
(45+96+33+16+35+81+71+12+28) ²

I cannot think where this would be of any use to you statistically.

MelodyOct 17, 2013

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http://cropwatch.unl.edu/web/cropwatch/archive?articleID=4772532

The first thing that I discovered was that a Briish Bushel is different from a USA bushel
I have done the working for a USA bushel

volume = pi *radius squared * height
=pi * 9 ² * 17
=4325.97 feet cubed

There are approx 0.8 bushels in a cubic foot

0.8 * 4325.97 = 3461 bushels (approx)

MelodyOct 17, 2013

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Google translation
Hahaha if you get a lot (: Thanks for the question of math my name is rosey win (: I do not understand Inglés ...... eh .... a bit more

You are very welcome Rosey.

MelodyOct 17, 2013

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You are very welcome and I am sorry but I don't speak Spanish.

Usted es muy agradable, y lo siento, pero yo no hablo español.

MelodyOct 17, 2013

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As far as I understand the question, you simply have to calculate

\beta via the corresponding inverse function, meaning atan(1/10)/atan(9/11). You then need to convert, if not already, the result into radian and add it. As tan() is a periodic function, make sure that you result lies in the given interval.

GuestOct 17, 2013

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you can't subtract these numbers until their denominators i.e. the numbers under the dash are not equal. you should make their denominators equal bu multiplying and dividing the same number from one of the fractions. here's the solution for your question:
11/14-5/7
let us see that denominator of which fraction can be made equal to the other.
the fraction is 5/7 as the denoinator can be made equal to the other denominator by multiplying two in it.
if we multiply two in the denoinator, see what happens:
5/7: 5/7x2=5/14
the denominators are now eqaual but the new fraction that is 5/14 is not qual to the original fraction as we have multiplied two only below the dash so we should multiply a two in the numerator also that is in the number above the dash. thus the final number that we get is 10/14. now we can carry our subtraction peacefullly as the denoinators are same.
once the denominators are same, we can subtract or add the numbers in the numerator that is the numbers above the dash directly and then we can get the answer by putting the denominator under the obtained number. See how it works
11/14-5/7
let us make the denominators equal.
5/7=5x2/7x2=10/14
now as the denominators are equal, we can diretly subtract the numerators
11/14-5/7=11/14-10/14=(11-10)/14=1/14
and the answer is 1/14 have a great day

GuestOct 17, 2013

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GuestOct 17, 2013

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The answer is 0.69444444444

GuestOct 17, 2013

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