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In a school, there is a total of 640 children. The ratio of Girls to boys is 7:9. How many boys are there in this school?

The first step to this question would be to add both of the ratio values which would be 16.Then you would divide the amount of children which is 640 by the value 16. You would Get 40. Then multiply 40 by 9 w...
CA
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Solve the simulaneous Equations: 5x + y = 21, x - 3y = 9

Steps to solve a simultaneous Equation:1) Make x and y coefficients the same2) Subtract or add (of which depends on scenario) equations to eliminate x or y3) Solve remaining variable4) Plug into other equati...
TT
Answered by Tait T. • Maths tutor
3194 Views

Factorise and thus solve: x^2– 2x– 24 = 0

x=6x=-4
HK
Answered by Harry K. • Maths tutor
4079 Views

Explain how stacks and stumps form

Stacks and stumps form when waves erode a weakness in a headland using abrasion or attrition. The crack widens until a cave is formed. Waves continue to erode the back of the cave until eventually it pushes ...
JR
Answered by Jess R. • Geography tutor
20171 Views

Translate into German: My friends and I like to help old people. We have no time now because we get a lot of homework. Last week I went shopping for my grandmother when she was ill and she gave me some money. I will use it for my holiday

Meine Freunde und ich helfen gerne alten Menschen. Im Moment haben wir keine Zeit, da wir viele Hausaufgaben erledigen müssen.Letzte Woche ging ich für meine Großmutter einkaufen, als sie krank war und sie g...
WB
Answered by Whitney B. • German tutor
2272 Views