Consider the proportion a:b:c = 3:1:5.
What is the value of
2a + 3b/4b + 3c?
(Hint: Choose different values of a, b, and c for which the proportion is true and evaluate the expression.)

X2 + y 2 = 36 x + y = 6 solve the system of equations.

Of the following, which statement or statements accurately reflect a way in which credit can be safer than cash? i. if your credit card gets stolen, you can cancel it and get your money back. ii. it is harder to lose a single credit card than a large number of bills. iii. if a merchant does not honor the agreement, you can call the credit company and dispute the charges. a. i and iii b. ii only c. iii only d. i, ii, and iii

47: 4 aisha changed 1.45 + 2.38 to 1.5 + 2.4 in order to estimate the sum. what estimation method did she use?