Ms. Holly had a gift card with a $375 balance. She bought several CDs that cost $17 each. After the purchase, her gift card balance was $239. Which equation can be used to determine the number of
CDs, d, she purchased?

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?