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9000 round off to one significant figure

9000 round off to one significant figure

The rate if exchange between the Japanese yen and sterling is quoted at ¥/£ 188.869 – 189.131.

a) How many pounds will a company obtain if it sold 1m yen? b) What is the cost of buying £500,000 in yen? c) How many yen would be received from selling £1m? d) What is the cost of buying...

a power b plus b power a equals 2197.values of a&b???

I want the method to solve the above problem

in which quadrant will y/x<0 and y>0

in which quadrant will y/x<0 and y>0

A parallelogram has pairs of opposite sides that are equal in length.

Question: A parallelogram has pairs of opposite sides that are equal in length. Question options: Always true Sometimes true I did this but it is wrong Never...

I can't draw 3d shapes on isometric dotty paper. What do you suggest I do?

I'm soon going to take the Level 6 papers and find drawing 3d shapes on isometric dotty paper hard-what do you suggest. I need a way to be a pro at this by May 2014. Please help me. Thanks.

A number decreased by 30 is the same as 14 decreased by 3 times the number. Find the number. Explain!

A number decreased by 30 is the same as 14 decreased by 3 times the number. Find the number. Explain!

What is the maximum number of unit squares that can touch each other?

i have tried it but not sure

Prove tan(a+b)

Q 5 (a) prove that     tan(A+B) =    tan A+tan B                                  ...

maths help

please help, its damn urgent .it is the trickiest of all!  Imagine you are playing a new version of the game of chess, called x chess. the rules are same, with just one exception. You have...

how is the area of the circle calculated?

A rectangular plywood measures 2.1m by 70 cm . circular discs are to be cut out from the plywood of diameter 14 cm . how many discs can be cut and how much plywood will be left?

l is the line x+2y-6=0. The line k is perpendicular to l and its y intercept is -7. Find the equation of k

(a) l is the line x+2y-6=0. The line k is perpendicular to l and its y intercept is -7. Find the equation of k (b) m and n are 2 lines which pass trough the point of intersection...

Q4 c1 is the circle x² + y² -4y-20=0 and l is the line 2x-y+5=0

Q4 c1 is the circle x² + y² -4y-20=0 and l is the line 2x-y+5=0 (a) write down the centre and radius lenght of c1 (b) Find the perpendicular distance from the centre of c1...

maths help

the question is - How many times in a day is it impossible to tell the time by a clock with identical hour and minute hands, provided we can always tell whether it is a.m. or p.m.? What happens if...

Simplify 5x+4y\=x-7y ?

Really confused on this.

what is 2(x+3)+4(x+4)

what is it simplified

urgent math help

the question is -  A fully booked theatre is about to screen A Beautiful Mind to a group of 100 mathemati- cians. the 1st mathematican was thinking about the Riemann Hypothesis and somehow misplaced...

comparing the interest rates

John needs to borrow \$500,000 for three years. Which of the following option is more beneficial for him? (i) 3.2 % simple interest rate (ii) 1.6% compound interest rate when it is compounded...

(a-b)(-a-b)

expand using identities