Answer:
5 - 2x
Step-by-step explanation:
Translating words to numbers can be tricky.
Here it says: "5 decreased by twice a number." So you have to imagine-- I started with Five things. Then there was a decrease --twice some variable.
5 take away twice something translates to
5 - 2x
Tricky, because most algebra expressions are written with variables first, then the constants. You could rewrite this expression as
-2x + 5
A.
–21
B.
–11
C.
11
D.
21
Answer:
Step-by-step explanation:
Notice that the cross section is parallel to the base. So, if the cross section is a circle, then the base is also a circle.
Then, we just need to find all figures that have a circle at the bottom. The figures are a cylinder and a cone.
Therefore, the right answers are A and C.
Answer:
A. Cylinder
C. Cone
Step-by-step explanation:
Both a cylinder and a cone are three dimensional shapes that contain a circle as the base. If a cross section is made parallel to the base, that means that it should have the same shape as the base. Since a pyramid and cube both have straight edges, it would not be possible to form a circle from a parallel cut to the base, so the only options are cylinder and cone.
Answer:
80
Step-by-step explanation:
3+4=7 140/7=20 4*20=80