Step-by-step explanation:
We have AB = 7, Angle ABC = 70°
and Angle ACB = 90°.
Angle BAC = 180° - 70° - 90° = 20°
(Sum of angles in a triangle = 180°)
Using Trignometry,
AC = 7sin70° = 6.58.
BC = 7cos70° = 2.39.
C. 135
Corresponding parts of congruent figures are the same
Answer:
10
20
Step-by-step explanation:
correct c=3 x 10
incorrect i=-1
-------
incorrect= 10
number of questions= 10+10= 20
Answer:
46.67 %
Step-by-step explanation:
Total thickness = 30
14 of this is concrete 14/30 x 100% = 46.67 %
Answer:
n=5y-7.5
Step-by-step explanation: