







Simultaneous equations 
20170902 

keto pose la question : xy=2,x^2+xy=12 Penny Nom lui répond. 





Prisms 
20170901 

Christa pose la question : What do all prisms have in common? Penny Nom lui répond. 





Annual salary 
20170901 

Lisa pose la question : I am applying for a job that pays $16.00 per hour, plus 5 hours of overtime every 2 weeks. I live in California, where overtime is 1.5 times the regular rate of pay after you work 8 hours a day. What would the gross annual salary be with all the overtime hours added in? Penny Nom lui répond. 





A rope formed in a semicircle 
20170829 

Janna pose la question : How do I find the total length of a piece of rope formed in a semicircle that has a diameter of 8 inches? Penny Nom lui répond. 





A car on a rough road and a concrete road 
20170827 

Ken pose la question : A car is driven on a rough road at a speed of 25km and then on a concrete road with a speed of 70kph. The car has 5.5 hours to travel 225km. How long did the car travel on concrete road? Penny Nom lui répond. 





Factors 
20170816 

Gemma pose la question : Why do 315 and 525 have the same number of factors? Penny Nom lui répond. 





A 4 sided lot 
20170815 

Micheal pose la question : If one side of .4 acre is 25 feet what would the other three sides be Penny Nom lui répond. 





Two circles 
20170813 

Ladines pose la question : Find the equation of the circle passing through points of intersections of circles x²+y²=4y and x²+y²=2x and the center is on line y=2 Penny Nom lui répond. 





A rectangle and a circle 
20170812 

Ramzan pose la question : a diagram shows the shape of rectangular framework with length (2x+20)cm and with (y+10)cm . The outline is made of wire . If a circle with diameter 56 cm is to be made from the wire and the area of the rectangle is 420 square centimeter ,find the possible lengths and width of the rectangle Penny Nom lui répond. 





1 billion x 1 billion 
20170811 

Kona pose la question : 1 billion x 1 billion
1 trillion x 1 trillion Penny Nom lui répond. 





The perimeter of a sector of a circle 
20170811 

Alisa pose la question : find the perimeter of the sector with radius 7 cm in which the angle at the centre is 60 degrees leave your answer in terms of pi Penny Nom lui répond. 





Two digit numbers that contain 5 
20170811 

Irish pose la question : How many two digit numbers contain the digit 5? Penny Nom lui répond. 





(x18)/7=6 
20170808 

David pose la question : (x18)/7=6 Penny Nom lui répond. 





A pair of linear inequalities 
20170808 

Hempstone pose la question : Solve the inequalities 3x5<2x+5>4x+9 Penny Nom lui répond. 





Significant digits 
20170806 

Pat pose la question : The directions for a problem are: "Solve the problem, expressing your answer
using the correct number of significant figures."
Problem
0.0043 divided by 2.04
Answer before using the correct number of significant figures is
0.002107843
Is the correct number of significant figures the number below?
2107843
Pat Penny Nom lui répond. 

