Ronald's bill at the end of his lunch was $24.00. Using a proportion, determine the amount of his bill that he must leave for a 19% tip. A.
$24.19
B.
$28.56
C.
$4.08
D.
$4.56

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

Pls never taught i’m really confused and i rlly need