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x=10

Step-by-step explanation:

=

Solve by cross multiplying

13×3=39

3(x+3)=3x+9

3x+9=39

3x=30

x=10

x=10

Step-by-step explanation:

Assuming that the triangles are similar to each other, you can set up ratios

since 3/3 is 1 and we know that anything other than 0 over itself is 1, we can deduce that x=10

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐

were is the equation