1) C 2) B I hope this helps!
Answer:
chinese?
Step-by-step explanation:
Answer:
45
Step-by-step explanation:
AEF is a similar triangle to ABC. that means it has the same angles, and the sides (and all other lines in the triangle) are scaled from the ABC length to the AEF length by the same factor f.
now, what is f ?
we know this from the relation of AC to FA.
FA = 12 mm
AC = 12 + 28 = 40 mm
so, going from AC to FA we multiply AC by f so that
AC × f = FA
40 × f = 12
f = 12/40 = 3/10
all other sides, heights, ... if ABC translate to their smaller counterparts in AEF by that multiplication with f (= 3/10).
the area of a triangle is
baseline × height / 2
aABC = 500
and because of the similarity we don't need to calculate the side and height in absolute numbers. we can use the relative sizes by referring to the original dimensions and the scaling factor f.
baseline small = baseline large × f
height small = height large × f
we know that
baseline large × height large / 2 = 500
baseline large × height large = 1000
aAEF = baseline small × height small / 2 =
= baseline large × f × height large × f / 2 =
= baseline large × height large × f² / 2 =
= 1000 × f² / 2 = 500 × f² = 500 ×(3/10)² =
= 500 × 9/100 = 5 × 9 = 45 mm²
Answer:
18x^4+288x^3+1
Step-by-step explanation:
HOPE THIS HELPS<3
Answer:
2 and 5
Point and line.
Step-by-step explanation:
In geometry, there are many terms and jargons Mathematicians make use of.
Angle is one of the term used in geometry which depicts any form of inclination.
Segment is also use to analyze and to solve many questions.
Lines are used to join one segment or the other.
Point and ray are also used but are majorly used in optics
Asking that Which of the following do not have precise definitions in geometry.
The best answer are point and line.
Because there is no specific definition for the two variables.
