Solve the problem. adam wants to buy a video game system that costs $100.00. he has $28.35 in one piggy bank and $31.90 in another piggy bank. how much more money does adam need before he can buy the video game system? how can estimation be used to make sure the answer is reasonable? a. adam needs $160.25 more. estimation: $28 + $32 = $60. $100 + $60 = $160. adam needs about $160 more to buy his video game system. b. adam needs $39.75 more. estimation: $28 + $32 = $60. $100 – $60 = $40. adam needs about $40 more to buy his video game system. c. adam needs $30.13 more. estimation: $28 + $32 = $60. $60 ÷ 2 = $30. adam needs about $30 more to buy his video game system.

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.

$15.40 per mile

step-by-step explanation:

you have to round up to 4 because 6 is over 5 so you have to round the 3 up to 4