Which equation can be used to calculate the area of the shaded triangle in the figure below?

A rectangle with length of 14 feet and width 4 feet. A diagonal cuts the rectangle into two halves. One of the triangular halves is shaded.

fraction 1 over 2(14 × 4) = 28
2(14 + 4) = 36
fraction 1 over 2(14 + 4) = 9
2(14 × 4) = 112

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label

Sum is 17 and their difference is 3

Acollection of coins has value of 64 cents. there are two more nickels than dimes and three times as many pennies as dimes in this collection. how many of each kind of coin are in the collection?