aceman88:




Thanks so much my guy. the exam was written today. Your effort really helped a lot.

Mechanics96:


If the equations are really 3x+y=8 and x^2+x-y=6 then none of the options provided is correct!

I have provided the two values of y in my solutions and they are y=1.27 and y=26.73


If it was the right question that I solved, then I'm sure my solutions are right.

Cheers!

Hadampson:
Gurus in the house, please i need ur help on this questions

1) P, R, and S are points, O is the centre of the circle. If POR = 150degree. Calculate PSR

2) P, Q and R are point on a circle, centre of OPQ =36degree, what is the size of PRQ

3) In the diagram, O is the centre of the circle, if OD=DC and LDCB=16degree, calculate LAOE

Hadampson:
Help please

Hadampson:
Gurus in the house, please i need ur help on this questions

1) P, R, and S are points, O is the centre of the circle. If POR = 150degree. Calculate PSR

2) P, Q and R are point on a circle, centre of OPQ =36degree, what is the size of PRQ

3) In the diagram, O is the centre of the circle, if OD=DC and LDCB=16degree, calculate LAOE

cyndylove64:
Pls can someone help me solve this set theory using expansion without venn diagram AuB=AnB .thanks u can send the working to this whatsapp number 08138273229

EngrBello:
If the maximum value of y = 1+ hx -3x^2 is 13, find h

masperano:


the maximum value occurs when the derivative (dy/dx=0) hence differentiating we have

h-6x=0; => x=h/6. so substitute x into the first equation, we get ymax=1+h(h/6)-3(h/6)^2= 1+(h)^2/6-(h)^2/12=1+(h)^2/12;

=> ymax=1+(h)^2/12; but we were told from the question that ymax=13; 13=1+h^2/12=> 12=h^2/12.

Hence h^2=144, which implies h =+12 or -12.

EngrBello:
If y = 3cos4x , dy/dx equals

efficiencie:


let u=4x and hence y=3cosu
du/dx=4 and dy/du=-3sinu=-3sin4x
but dy/dx=dy/du * du/dx
dy/dx=4 * (-3sin4x)
dy/dx = -12sin4x

EngrBello:

A bag of rice feeds 15 students for 7days.How long would the same bag feed 10 students

EngrBello:

A bag of rice feeds 15 students for 7days.How long would the same bag feed 10 students

efficiencie:


4 days and 16minutes

Xsem:
A boy lost 1/4 of his cards in a game of cards then won 6 more cards.if he had 7 cards less when he finished playing than when he started, how many did he start with.

Please help with this

Mechanics96:


He must have started with 52 cards;

Let the no of cards he started with be x
x- 1/4x +6 = x-7
4x-x+24= 4x-28
x=24+28
x=52

Xsem:
A boy lost 1/4 of his cards in a game of cards then won 6 more cards.if he had 7 cards less when he finished playing than when he started, how many did he start with.

Please help with this