Au. s. nickel has a mass of 5.00 grams. a u. s. penny has a mass of 2.50 grams. what is the mass in kilograms of the coins in a bag containing 186 nickels and 72 pennies?

In right ∆abc shown below, the midpoint of hypotenuse ac is located at d and segment bd is drawn.if ab = 12 and bc = 16, then explain why bd = 10. hint: consider what you know about the diagonals of a rectangle.

What is the value of x when x + 7 = 21?

If angle b measures 25°, what is the approximate perimeter of the triangle below? 10.3 units 11.8 units 22.1 units 25.2 units