Algebra 2
posted by Stacie .
y varies jointly as x and z, and y=98/3 when x=2 ans z=7. Find y when x=7 and z=3.
Options:
A: y=7/3xz; 49
B: y=6/7xz; 18
C: y=14/3xz; 98
D: y=3/7xz; 9

Let
y=kxz
98/3=k(2*7)
k=98/3/14=7/3
Therefore y=(7/3)xz
when x=7, z=3
then y=(7/3)*7*3=49
Respond to this Question
Similar Questions

VariationCheck Problems
Can you please check my answers? Thanxs! Write an equation that expresses the relationship. Use k as the constant of variation. 20. f varies jointly as b and the square of c. I got: f=kbc^2 22. r varies jointly as the square of s 
variation
Can you please check my answers? Thanxs! Write an equation that expresses the relationship. Use k as the constant of variation. 20. f varies jointly as b and the square of c. I got: f=kbc^2 22. r varies jointly as the square of s 
variation
Can you please check my answers? Thanxs! Write an equation that expresses the relationship. Use k as the constant of variation. 20. f varies jointly as b and the square of c. I got: f=kbc^2 22. r varies jointly as the square of s 
Check my answers. Algebra
Can you please check my answers? Thanxs! Write an equation that expresses the relationship. Use k as the constant of variation. 20. f varies jointly as b and the square of c. I got: f=kbc^2 22. r varies jointly as the square of s 
Algebra II
1. If y varies directly as x, and y=30 when x=4, find the constant of proportionality. 2. If y varies inversely as x, and y=2 when x=10, find x when y=4. 3. If a varies jointly as b and c, and a=10, when b=12 and c=2, find a when … 
Math
Factor each expression completely. Can you please show me the steps for these. I'm so confused and don't know how to do them. Thank you so much!! kx^3+2kx^263kx and 3xz^2+42xyz+99xy^2 
Algebra II
Simplify (2x^2y^2/3xz^2) times (4xzy^3/9xyz)^1 
College Math
Simplify the algebraic expression 3xz + 4xy – 2yz + xy + 5yz – 9xz and evaluate it for x = 3, y = 2, z = 5. Identify the variables, constants, and coefficients in the simplified expression. 
MathII ( Joint and Combined Variation)
1. R varies jointly as S and t. If R=1/6,S=1/8 and T=3, find R when S=2 and T=11. formula: R=KST 2. U varies jointly as L and H and inversely a S. If U=1.8, L=6.4, H=1.5 and S=7.2, find U when L=4.3, H=5.1 and S=2.2. formula: U=KLH/S … 
Algebra 2
y varies jointly as x and z, and y=98/3 when x=2 ans z=7. Find y when x=7 and z=3. Options: A: y=7/3xz; 49 B: y=6/7xz; 18 C: y=14/3xz; 98 D: y=3/7xz; 9