Describe the surface in 3 represented by the equation x + y = 9. This is the set {(x, 9 − x, z)|x , z } which is a vertical plane that intersects the xy-plane in the line y = 9 − x, z = 0. This is the set {(x, 9 − x, z)|x , z } which is a horizontal plane that intersects the xz-plane in the line y = 9 − x, z = 0. This is the set {(x, 9 − x, z)|x , z } which is a horizontal plane that intersects the xy-plane in the line y = 9 − x, z = 0. This is the set {(x, y, 9 − x − y)|x , y } which is a vertical plane that intersects the xy-plane in the line y = 9 − x, z = 0. This is the set {(x, 9 − x, z)|x , z } which is a vertical plane that intersects the xz-plane in the line y = 9 − x, z = 0.

yes because they have the same amount of green and blur marbles.

step-by-step explanation:

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.

just sum

10 + 10 = 20

answer: the four apples you took away.

step-by-step explanation: