Answer:
see explanation
Step-by-step explanation:
given that r varies jointly with x and y then the equation relating them is
r = kxy ← k is the constant of variation
To find k use the condition r = 15 when x = 3 and y = 4
k = = = 1.25
r = 1.25xy ← equation of variation
When x = 16 and y = 1.25, then
r = 1.25 × 16 × 1.25 = 25
All you have to do is since one batch needs 1 1/3 cup of walnuts multiply 1 1/3 to 3 3/4 = 3 1/4 cups
9/7 because of order of operations
LET THE DIMENSIONS BE X AND Y
2(L+B)=52
2(X+Y)=52
X+Y=26
X=26-Y
L*B=153
X*Y=153
26-Y*Y=153
26Y-Y^2=153
Y^2-26Y+153=0
Y^2-17Y-9Y+153
Y(Y-17)-9(Y-17)
(Y-9)(Y-17)
EITHER Y=9 OR Y=17
IF Y =9
X=15 M
IF Y=17
X=9M
SO DIMENSIONS ARE
(15 &9) (9 &17)
MARK IT BRANLIEST PLZ........