We know that
The Euler's formula state that, the number of vertices, minus the number of edges, plus the number of faces, is equal to two
V - E + F = 2
clear F
F=2-V+E
in this problem
V=8
E=14
F=?
so
F=2-8+14
F=8
the answer is8 faces
Answer:
the answer is d NO SOLUTION
Step-by-step explanation:
edge2020 took the test
Answer:
b. 38 cm.
Step-by-step explanation:
Note that the 2 sides which are unmarked are the opposite sides of 2 rectangles so they are both = 2 cm.
Now we just add all the given sides.
Starting with 6 on the top and travelling clockwise:
Perimeter = 6 + 2 + 2 + 3 + 3 + 2 + 7 + 2 + 3 + 3 + 3 + 2
= 38 cm.
Answer:
<h2><em><u>x</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>39</u></em><em><u>°</u></em></h2>
Step-by-step explanation:
As per condition,
3x - 17° + 2x + 2° + 90° + 90° = 360°
<em>[</em><em>Since</em><em> </em><em>angle</em><em> </em><em>sum</em><em> </em><em>property</em><em> </em><em>of</em><em> </em><em>quadrilateral</em><em>]</em>
=> 3x + 2x - 17 + 2 + 90 + 90 = 360
=> 5x = 360 + 17 - 2 - 90 - 90
=> 5x = 195
=> <em><u>x = 39 (Ans)</u></em>
Answer:
i. 38, 44
ii. 256
iii. 40
iv. 260
Step-by-step explanation:
i. 20, 26, 32, 38, 44 => the difference is six
ii 256, 64, 16, 4 => 4 multiply by the digit before the blank space
iii. 4(x + 3) = 4 (7 + 3)
= 28 + 12
= 40
iv. $65 per hour
for 4 hrs => 65 x 4 = $260
v. Question 5 is not clear enough.
Regards.
