4 lines are shown. 3 lines intersect and extend from one point forming 2 angles. The top angle is labeled 1 and the bottom angle is labeled 2. A fourth line intersects all 3 lines. When it intersects the middle line, it forms 4 angles. Clockwise, from the top, the angles are 3, 6, 5, 4. When it intersects the third line, it forms 4 angles. Clockwise, from the top left, the angles are 7, 8, blank, blank.
Which angle pairs are supplementary? Check all that apply.

∠1 and ∠2
∠4 and ∠3
∠4 and ∠5
∠7 and ∠5
∠3 and ∠6

Find the total area for the regular pyramid ( follow the answer set up in the picture)

The blue whale is the largest animal living on the earth. the average blue whale measures 100 feet long (30 meters) and weighs 300,000 pounds (136,000 kilograms). a whale’s head is 1⁄3 of the length of its body. a new baby whale is 1⁄4 the length of a grown whale. the average man is 1⁄17 the length of a blue whale, and 1⁄1,818 its weight. a human baby measures 1⁄4 of the length of an adult. calculate the following information: how long is a whale’s head? how long is a new baby whale? how tall is the average man? how much does the average man weigh? how tall is the average human baby?

Find the gradient of f(x,y,z)equals=left parenthesis x squared plus y squared plus z squared right parenthesis superscript negative 1 divided by 2 baseline plus ln left parenthesis x right parenthesis x2+y2+z2−1/2+ln(xyz) at the point left parenthesis negative 2 comma 1 comma negative 2 right parenthesis(−2,1,−2).