Graciella is planning to give away half of her books. She currently has 28 hardcover books and 19 paperback books. Which of the following equations can be used to find b, the number of books Graciella will give away? A. b=(28+19) multiplied by 2
B. b=(28+19) divided by 2
C. b=(28+19) divided by 1/2
D. b= 28+19 divided by 2

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

If 25% of y is 30, what is 60% of y?

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap