Write each sentence as an equation. 1) The sum of a number and 16 is 58.
2) The product of a number and 8 is 80.
3) 12 divided by a number is 3.
4) A number minus 8 equals 21.

1) x + 16 = 58

2) 8x = 80

3) 12/x = 3

4) x - 8 = 21

(The ones underlined are the equation)

1) Let the number be x

x + 16 = 58

x = 58 - 16

x = 42

2) let the number be x

x * 8 = 80

x = 80/8

x = 10

3) let the number be x

12/x = 3

x = 12/3

x = 4

4) let the number be x

x - 8 = 21

x = 21 + 8

x = 9

5

step-by-step explanation:

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.