Question

What is the value of 3a – 4c, given a = 4 and c = (-5)?

Answer 1

Step-by-step explanation:

A:B:C = 3:4:5

Step-by-step explanation:

Given \frac{A}{3}=\frac{B}{4}=\frac{C}{5}3A=4B=5C

Let \frac{A}{3}=\frac{B}{4}=\frac{C}{5} = m3A=4B=5C=m

Now ,

i ) \frac{A}{3}=m3A=m

\implies A = 3m⟹A=3m ---(1)

ii) \frac{B}{4}=m4B=m

\implies B = 4m⟹B=4m ---(2)

iii)\frac{C}{5}=m5C=m

\implies C= 5m⟹C=5m ---(3)

A:B:C = 3m:4m:5m

/* From (1),(2)& (3) */

Divide each term by m , we get

=> A:B:C = 3:4:5

Therefore,

A:B:C = 3:4:5

•••••

Answer 2

Step-by-step explanation:

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