Q is directly proportional to r. q is 76 when r is 20. work out q when r is 45.
2 answers:
Q α r
Answer:
q=171
Step-by-step explanation:
Hello there!
In this explanation k is constant and it means that q is some constant amount bigger than r.
q=kr
76=k×20
76÷20=k
k= 3.8
q=3.8r
q=3.8×45
q=171
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