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8_murik_8 [283]
3 years ago
8

If rs = 23 - 2x st = 9x -5 and rt = 39 find rs

Mathematics
1 answer:
xxMikexx [17]3 years ago
6 0

Answer:

rs=17\ units

Step-by-step explanation:

we know that

rt=rs+st

we have

rt=39\ units

rs=(23-2x)\ units

st=(9x-5)\ units

substitute the given values and solve for x

39=(23-2x)+(9x-5)

39=(7x+18)

7x=39-18

7x=21

x=3

Find the value of rs

substitute the value of x

rs=23-2(3)=17\ units

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