Answer:
The correct options are;
1) The shape maps unto itself after a rotation of 270 degrees
2) The smallest angle of rotational symmetry is 90 degrees
3) The shape maps unto itself after a rotation of 180 degrees
Step-by-step explanation:
We note that the shape of a cross which consists of two equal members (segments) bisecting each other at right angles such that when a member is placed vertically upright, the other member will be horizontal, therefore we have;
After rotation by 90 degrees, the vertical member will become horizontal and vice versa
After rotation by 180 degrees, the vertical member will become horizontal and vice versa again
Similarly, after rotation by 270 degrees, the once vertical member will become horizontal and the horizontal member will become vertical
Answer:
26
Step-by-step explanation:
104 divided by the 4 sides (for perimeter) equals 26
Answer:
first one is 30 5 40
35 25 15
10 45 20
second one is 5 26 11
20 14 8
17 2 23
third one is 9 16 11
14 1210
13 8 15
and forth one is 20 70 60
90 50 10
40 30 80
Step-by-step explanation:
which ever direction you know 2 of 3 numbers, you add them and subtract the sum its supposed to add up to. rough explanation
This is a geometric sequence which represent exponential decay. For any sequence, if r^2, the common ratio squared, is less than one, it is exponential decay, or:
f=ir^t
If r^2<1, it is exponential decay. In this case r=2/3, so it is exponential decay.
Answer:
Because +- or - + = -
Step-by-step explanation:
-a + b = - c
a + - b = - c
-a × b = - c
a × - b = -c
Extra references:
-ve ×/+ -ve = +ve
+ve ×/+ -ve = - ve
-ve ×/+ +ve = - ve
+ve ×/+ +ve = +ve
Hope these could solve your problem.
