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Can you solve this by factoring? 10r^2 - 35r = 10 2007-08-12
From Aranxa:
how do u solve this equation by factoring:
10r^2 - 35r = 10

Answered by Stephen La Rocque.
Water bill woes 2007-08-12
From Terry:
I know that a cubic foot of water=7.48051945 gals., but I keep getting my water bill and they go by thousands of a gal. per cubic foot. Is there a conversion that says that shows this? Water department=.763 x cubic foot used=thousands of gallons water used that month. Exampel: 72cu. ft meter reading x .763+ 58.--- galons of water I use in a month. Total 58=thousand = +gallons. This is wrong. There are only two people in the house.
Answered by Stephen La Rocque.
How many acres in 330 feet by 660 feet? 2007-08-12
From dennis:
how many acres in 330 feet by 660 feet?
Answered by Penny Nom.
The equation of a circle 2007-08-12
From ranessa:
Write the equation of the circle that satisfies the given condition.

C(0,8) ; R = 5

Answered by Penny Nom.
What number am I? 2007-08-11
From Belinda:
What number am I? My millions digit is 4. My billions digit is two time = my millions digit. My hundred thousands digit is two more than my = millions digit and three more than my ones digit. My ten millions digit = is one less than my ones digit. My other digits are zero. Write my = short word form.
Answered by Penny Nom.
The equation of a sphere 2007-08-11
From isvarya:
Find equation of the sphere with centre (1,-4, 3) and radius 5

What is the intersection of this sphere with the xz plane?

Answered by Harley Weston.
Fencing cost 2007-08-11
From Ethel:
If ann wants to put up a fence for her dog around her 75ft x 55ft retangular yard, the hardware store has fencing materials for 7.50 per yard. How much would it cost her to purchase fencing material?
Answered by Stephen La Rocque.
Slopes of a triangle's medians 2007-08-11
From Gina:
I am trying to help my daughter with this, but I am very weak in Math.Please help! Find slopes of the medians of a triangle whose vertices are P(1,3), Q(3,5), and R(6,2)
Answered by Stephen La Rocque.
A right triangle 2007-08-11
From Peter:
Ok, is it possible to find the height and base of a right triangle when all the information you are given is the length of the hypotenuse?
I also know that the angle between side b and the hypotenuse is 45 degrees. please help.

Answered by Walter Whiteley.
The swaying of a building in the wind 2007-08-11
From San:
During a strong wind, a tall builing, such as the CN Tower, can sway back and forth as much as 100cm, with a period of 10 seconds. Please help me to determine the equation for this function, in the form y=asinkx
Answered by Stephen La Rocque.
How many pennies will a half gallon bottle hold? 2007-08-11
From Harold:
How many pennies will a half gallon bottle hold
Answered by Penny Nom.
How many complete cycles does the piston make in 30minutes? 2007-08-11
From San:
A piston in a large factory engine moves up and down in a cylinder. The height, h centimetres, of the piston at t seconds is given by formula h=120sin(pi)t+200 How many complete cycles does the piston make in 30minutes?
Answered by Penny Nom.
GST and PST 2007-08-11
From Cynthia:
I paid $15.98 for an item. Both GST (.96) & PST ($1.12) were added for a total of $18.06. I know that .96 is GST (6%) and $1.12 is PST (7%).
Other than looking at the receipt, if all I have is the total amount paid, how do I calculate how much of the total are taxes?

Answered by Penny Nom.
Diagonals on a cylinder 2007-08-10
From John:
I have a cylinder that is 37.5" width X 25.25" circumference. I need to create a repeating diagonal lined pattern on the cylinder so that when it prints it joins perfectly at the circumference repeat. The design must follow these specs. Black diagonal lines need to be 1.250" max width X 1.5" max spacing between the black lines. Please Help
Answered by Stephen La Rocque.
Paying off a loan 2007-08-08
From Iona:
I borrowed $6000. 00 from a friend to pay school fee. He said I should not pay back any interest but pay $350.00 monthly after graduation. (1) Make an equation from the above (2) make a graph (3) what is the relationship between the months after graduation and the loan? (4) what is the horizontal and vertical intercept relate to the problem?
Answered by Stephen La Rocque.
 
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