I need help with this question please. two similar triangles have perimeters of 45 cm and 75 cm respectively. What scale factor would relate these two triangles. (write the answer as decimal that is less than 1)

Atemperature of 1.64◦f corresponds to answer in units of ◦c.

What is the equation of the line that is parallel to the line with the equation y= -3/4x +1 and passes through the point (12,-12)

Sam opened a money-market account that pays 3% simple interest. he started the account with $7,000 and made no further deposits. when he closed the account, he had earned $420 in interest. how long did he keep his account open?