If the cost of 10 pens is rupees 144.40, then find the cost of 7 pens

What is the missing reason in step 5? linear pair postulategivendefinition of complementary anglescongruent complements theorem

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4