All Answers

+3146

[input](2/3x-4)^2+9=0[/input]

adminApr 12, 2012

Apr 11, 2012

Thx smart but cute. I like ur answer even though I'm replying late

GuestApr 11, 2012

+3146

sqrt( x ) / sqrt( y ) = sqrt( x/y )

adminApr 11, 2012

+3146

b: # of boys
g: # of girls

kymberlee17:
thier are 357 seniors in harris high school

b+g=357

kymberlee17:
the ratio of boys to girls is 7:10

b/g=7/10

b+g=357
b/g=7/10 <=> b=g*7/10

(g*7/10)+g=357
g*(7/10+1)=357
g=357/(7/10+10/10)
g=357/(17/10)
g=357*(10/17)=210
=>
b=357-210=147

[input]solve( b+g=357, b/g=7/10 )[/input]

adminApr 11, 2012

+3146

[input]20000 + 3,400,000[/input]

nyasha:
what is the scientific notation for 20,000 + 3,400,000?

[input]3420000[/input]

adminApr 11, 2012

+3146

MathSucks:
Simplify the Expression: Square Root symbol over 88.

sqrt( a*b ) =sqrt(a)*sqrt(b)

sqrt(88)=sqrt(4)*sqrt(22)=2*sqrt(22)
[input]factorize(88)[/input]

sqrt(30)=sqrt(30)
[input]factorize(30)[/input]

adminApr 11, 2012

I did these problems on paper, and the answers i came up with were:

SQRS 88 = 8SQRS11

SQRS 30 = 3SQRS10

Are these correct?

GuestApr 11, 2012

+3146

(P+Q)/2

[input]((-3, 4)+(4, -2))/2[/input]

adminApr 11, 2012

+3146

confusedmathguy:
patio with an area of 150 square feet

two equations:
l*w=150 (area formula length*width)

confusedmathguy:
length to be 6 feet longer than the width

l=6+w

[input]solve( l*w=150, l=6+w)[/input]
length=15.6
width=9.6

test:
[input]15.6feet*9.6feet in feet^2[/input]

adminApr 11, 2012

+3146

5^n

[input]5^n = 1e9[/input]

adminApr 11, 2012

Y=mx+b
Y is the Y-axis
M=slope
x=the x-axis
b=is the Y-intercept (the point where the line crosses the y-axis)

**If you know Y,X, and B, You can easily solve the equation to find M

smartbutcute09Apr 11, 2012

Apr 10, 2012

How long must $5200(USD) be left in the bank to have $5439.25? 9% interest compounding monthly.

This is Compound Interest: A=P(1+r/n)^nt

$5439.25=5200(1+.09/12)^12x

about 6 months?

FITZ

GuestApr 10, 2012

+3146

[input]5/10 = x/6[/input]

5/10 = x/6
*6 on both sides
6*5/10 = 6*x/6
6*5/10 = 1*x
6*5/10 = x
x = 30/10
x = 3/1
x = 3

adminApr 10, 2012

+3146

Sylvia.McIntosh4:
what is the mathematical sign on a scientific calculator for fractions?

/

example:
[input]1/3 + 2 2/3[/input]

adminApr 10, 2012

The answer is 35.71428571428571.
But to get a more simple answer round it to two Decimal Places and you get
35.71

GuestApr 10, 2012

+3146

S = 4*v^2
[input]solve(S = 4*v^2, v)[/input]

adminApr 10, 2012

+3146

Geheimrezept für Gummibärchen?

adminApr 10, 2012

Apr 9, 2012

Depends, what are looking for?
there's SOHCAHTOA (Soak-Ah-Toe-Uh)
Sine is Opposite/Hypotonuse(SOH)
Cosine is Adjacent/Hypotonuse (CAH)
Tangent is Opposite/Adjacent (TOA)
Then there are some really neat tricks to the unit circle as well if you want to know those.

GuestApr 9, 2012

+3146

one formula which might help you:
sqrt( a * b ) = sqrt( a ) * sqrt( b )

now you have to "smart split" the number "under Sq. Root symbol".

Guest:
Simplify the expression: 88 under Sq. Root symbol

88 = 4 * 22
sqrt( 88 ) = sqrt( 4 ) * sqrt( 22 ) = 2 * sqrt( 22 )

sqrt( 108 ) = 6 * sqrt(3)

sqrt( a / b ) = sqrt( a ) / sqrt( b )

Guest:
4/9 uner Sq. Root symbol (Four/Ninths)

sqrt(4/9) = sqrt( 4 ) / sqrt( 9 ) = 2 / 3
sqrt( 100/49 )= 10/7
sqrt( 5/36 )= sqrt(5)/6

adminApr 9, 2012

Whoops... i am so stupid. Those #s in parentheses aren't Four/Ninths, One Hundred/Forty-ninths, or Five/Thirty-sixths.

They are 4 divided by 9, 100 divided by 49, and 5 divided by 36.

how do you simplify these, and the others i mentioned in the last post?

GuestApr 9, 2012

+42

The right answer is:
if x < ½ then -2x + 1
if x > ½ then 2x - 1
if x = ½ then both are right, no differance

ricom39Apr 9, 2012

+3146

[input]209/30[/input]

adminApr 9, 2012

+3146

[input](9/16)(1-4x)=(27/64)(2x-5)[/input]

adminApr 9, 2012

+3146

[input]x/8=54/72[/input]

adminApr 9, 2012

X=19/22

GuestApr 9, 2012

All Answers 358173 Answers

1 Online Users

Top Users

Sticky Topics