8times the sum of half a number and 12 is 30

Use the function value to find the indicated trigonometric value in the specified quadrant. function value quadrant trigonometric valuecsc(θ) = −4 iv cot(θ)cot(θ)=?

Four congruent circular holes with a diameter of 2 in. were punches out of a piece of paper. what is the area of the paper that is left ? use 3.14 for pi

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?