3 years ago

Pleaseeee helppp meee

1 answer:

6 0

5) To find the answer we can set up a proportion (see image 1), then solve for x. 5 x 1000/100 = x
x = 50
The answer is 50. :)

7) Set up another proportion (see image 2), then solve for x again.
100 x 100/25 = x
x = 400

Hope this helps! :)

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Using ∆ law of vector addition,

PR→=PQ→+QR→PR→=PQ→+QR→ - (i)

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RP→=RS→+SP→RP→=RS→+SP→ - (ii)

Taking LHS,

=PQ→+QR→+RS→+SP→=PQ→+QR→+RS→+SP→

[Put value of PR→=PQ→+QR→PR→=PQ→+QR→ from equation (i) ]

=(PR→)+RS→+SP→=(PR→)+RS→+SP→

[Put value of RP→=RS→+SP→RP→=RS→+SP→ from equation (ii) ]

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