Warner Mullins

07/26/2023 · Primary School

B. Solve for the value of the constant of variation \( k \), then find the missing value. 1. \( z \) varies jointly as \( x \) and \( y \) and \( z=60 \) when \( x=5 \) and \( y=6 \). a. Find \( z \) when \( x=7 \) and \( y=6 \). b. Find \( x \) when \( z=72 \) and \( y=4 \). c. Find \( y \) when \( z=80 \) and \( x=4 \). 2. \( z \) varies jointly as \( x \) and \( y \). If \( z=3 \) when \( x=3 \) and \( y=15 \), find \( z \) when \( x=6 \) and \( y=9 \). 3. \( z \) varies jointly as the square root of the product of \( x \) and \( y \). If \( z=3 \) when \( x=3 \) and \( y=12 \), find \( x \) when \( z=6 \) and \( y=64 \). 4. \( d \) varies jointly as \( h \) and \( g \). If \( d=15 \) when \( h=14 \) and \( g=5 \), find \( g \) when \( h=21 \) and \( d=8 \).