Calcule as expressões: a) - 10 - ( - 7 + 4 - 6 ) b) - 14 - ( 7 - 6 ) + ( 8 - 5 ) c) 10 - { - 2 + [ 1 + ( + 4 ) - 8 ] } d) 25 + [ - 4 + 1 - ( - 3 + 7 ) ] e) 21 + [ - 17 + ( 19 - 4 ) + 12 ]

Marina baked cookies. she gave 3/4 of the cookies to the scout bake sale. she shared the remaining 6 cookies with her friends. how many cookies did marina bake?

Ingredient c: 1/4 cup for 2/3 serving or ingredient d: 1/3 cup for 3/4 serving which unit rate is smaller

The triangle shown has a hypotenuse with a length of 13 feet. the measure of angle a is 20 degrees. and the measure of angle b is 70 degrees. which of the following is closest to the length, in feet, of line segment ac? no need to use a calculator to find the trig numbers. each function is listed below. 4.4 5 12.2 35.7