The ratio of the heights of two trees is 7: 5. if the first tree is 210 feet tall, what is the height of the second tree?

The height of the second tree is 150ft.

Step-by-step explanation:

Well you have to set it up as a proportion, so

7 = 210

5 = x

Then you cross multiply, 7 times x is 7x, and 210 times 5 is 1050.

Now you have 7x = 1050

Then you divide 1050 and 7x by 7.

And the final answer is x = 150ft

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

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step-by-step explanation: