Bytelearn - cat image with glassesAI tutor

Welcome to Bytelearn!

Let’s check out your problem:

If 
(j)/(k)=(4)/(5), which of the following correctly expresses 
k in terms of 
j ?
Choose 1 answer:
A) 
k=(4)/(5j)
(B) 
k=(5)/(4j)
(C) 
k=(4j)/(5)
(D) 
k=(5j)/(4)

If jk=45 \frac{j}{k}=\frac{4}{5} , which of the following correctly expresses k k in terms of j j ?\newlineChoose 11 answer:\newline(A) k=45j k=\frac{4}{5 j} \newline(B) k=54j k=\frac{5}{4 j} \newline(C) k=4j5 k=\frac{4 j}{5} \newline(D) k=5j4 k=\frac{5 j}{4}

Full solution

Q. If jk=45 \frac{j}{k}=\frac{4}{5} , which of the following correctly expresses k k in terms of j j ?\newlineChoose 11 answer:\newline(A) k=45j k=\frac{4}{5 j} \newline(B) k=54j k=\frac{5}{4 j} \newline(C) k=4j5 k=\frac{4 j}{5} \newline(D) k=5j4 k=\frac{5 j}{4}
  1. Given equation: We are given the equation jk=45\frac{j}{k} = \frac{4}{5}. To find kk in terms of jj, we need to solve for kk.
  2. Multiply by kk: Multiply both sides of the equation by kk to get rid of the denominator on the left side: k×jk=k×45k \times \frac{j}{k} = k \times \frac{4}{5}.
  3. Simplify equation: This simplifies to j=4k5j = \frac{4k}{5} because the kk's cancel out on the left side.
  4. Isolate kk: Now, to solve for kk, we need to get kk by itself on one side of the equation. We can do this by multiplying both sides of the equation by 55 and then dividing by 44.
  5. Multiply by 55: Multiplying both sides by 55 gives us 5j=4k5j = 4k.
  6. Divide by 44: Now, divide both sides by 44 to isolate kk: 5j4=k\frac{5j}{4} = k.
  7. Final expression: We have now expressed kk in terms of jj. The correct expression is k=5j4k = \frac{5j}{4}, which corresponds to answer choice (D).

More problems from Convert an explicit formula to a recursive formula