Libuse

An airplane flying with the wind can cover a certain distance in a = 3 hours. The return trip against the wind takes b = 4.5 hours. How fast is the plane and what is the speed of the wind, if the one-way distance is c = 720 miles?

13 years ago

A collection of nickels, dimes, and quarters amounts to $9.50. If there are 130 coins in all and there are twice as many dimes as there are quarters, find the number of nickels.

13 years ago

Graph the solution set for the system of linear inequalities y<2x+3 and y>=2x-6

13 years ago

(t+7/3)^2

13 years ago

(3/4x-1/6)(3/4x+1/6)

13 years ago

Factor. (4x^2+8r+3)=( )( )

13 years ago

Factor. (2x^2+5x-10)=( )( )

13 years ago

Factor: (x^2+4x-5)=( ) ( )

13 years ago

Factor, lowest term: (2x^2+5x-10)=

13 years ago

$9.94......but I am not very good to explain how I got the answer.

13 years ago

Ms.Sue...... 8 + 8*0.08 = x x*0.15 = y x+y= it will be answer

13 years ago

You are smart! Thanks!

13 years ago

This does not sound good...and relationship is between rate, distance and time........:-O

13 years ago

"symbolic reasoning" means using symbols to aid in solving (reasoning) problems. For example: 1. After learning addition and substraction, first graders are asked, "What number must be added to 2 to make it equal 5?" They can understand something like thi...

13 years ago

3x-3y=-9 /*-3 -9x+9x=+27 9x-9y=-27 If you look at the top, the equotations answer after solving will be 0=0 and this is mean DEPENDENT.

13 years ago

6+4 because 14-4=10 or 6+4=10

13 years ago

She sell one all pan (12 brownies) and 3/12 from another one.

13 years ago

-2x+19 or 19-2x

13 years ago

1. is 56-8+2 temperature at 8 am was 50F.

13 years ago

2. 72+8+5 85F

13 years ago

3. 16+4+3 23C

13 years ago

20 squares with perimeter 160, build together in one big square,and question is what will be the perimeter of the big square

13 years ago

20 squares with each perimeter 160.....

13 years ago

2(x2+4x-1)-4(2x-4)=....and solve.

13 years ago

x^2 - 5^2 = (x-5).(x+5)

13 years ago

Find the following special product. Simplify your answer completely. Thank you

13 years ago

(3/4x-1/6)(3/4x+1/6)= Find the following special product. Simplify your answer completely. Thank you.

13 years ago

-6m=3.m.m -6/3=m.m/m -2=m

13 years ago

x/8-12=10 /.8 everything x-96=80 x=80+96 x=176

13 years ago

Yeah....but second letter is not x.... :-(

13 years ago

ok thanks

13 years ago

This is not the lower term (x+5)(x-1) The lower term must look like (2x+....)(....)

13 years ago

lowest term....

13 years ago