Solving proportions using cross products

Use cross products to solve

 $\frac{e}{22}\ =\ \frac{6}{15}$  

Tags

CCSS.7.RP.A.3

Solve

 $\frac{7}{r}\ =\ \frac{1}{4}$  

Tags

CCSS.7.RP.A.3

Solve

 $\frac{15}{y}\ =\ \frac{40}{12}$  

Tags

CCSS.7.RP.A.3

Solve

 $\frac{2.1}{42}\ =\ \frac{7}{t}$  

Tags

CCSS.7.RP.A.3

Solve

 $\frac{9}{15}\ =\ \frac{m}{25}$  

Tags

CCSS.7.EE.B.4

CCSS.7.NS.A.2

CCSS.7.NS.A.3

CCSS.7.RP.A.2