Roderick is counting the change on his dresser. he has twice as many pennies as he does dimes. he has twice the amount of dimes
as he does nickels. he has 3 fewer quarters than dimes. which variable definition would be easiest for roderick to use when writing expressions for the number of all the coins?
since dimes is mentioned in relation to quarters, pennies, and the nickels, u would use d as ur variable
ur expression would be : d + (2d) + (1/2d) + (d - 3) = total amount of coins...then u would solve for d, the number of dimes. And once u know that, u can sub that answer back into ur original equations to find the number of pennies, quarters and nickels
Some triangles can have a right angle, but not all triangles are right angles. If a triangle has a right angle, it has one angle of 90°. Triangles have a total of 180°.
