Answer:
178.5
Step-by-step explanation:
21×8.50 is 178.5 just that
Answer: A rectangle
Note: I am a bit confused between A), B), and C), but the answer I am going for is C).
Step-by-step explanation:
By definition, a cross-section is the intersection of a plane and a body of three dimensions.
A pentagonal prism has a pentagon as its base. and its lateral faces are rectangles.
If a plane perpendicular cuts the pentagonal prism to the base, this means that the plane is parallel to lateral faces, then, the shape of the cross-section that is formed is also a rectangle.
Cosine is co added onto sine. Basically, cosine is the sine function moved over 90degrees or pi/2 (pi/2 on a unit circle is 90 degrees)
Sin(x)=cos(x+90) <--degrees
Sin(x)=cos(x+pi/2) <--radians
The above two equations for converting them is called a cofunction identity. There's many more identities to convert sines, cosines, tangents, cosecantes, secantes, and cotangents between each other. This is taught to you in PreCalculus.
Answer:
B= 2y(3)/7x(8)
C= 12/ x(3) y(3)
D= The same because nothing else can be done with it
(parnthaces) are exponents
