Answer:
x=19
Step-by-step explanation:
Those two angles are vertical so they are congruent, equal the same thing. 8*19+2 = 154.
Answer:
Step-by-step explanation Yes u did It right
Answer:
see explanation
Step-by-step explanation:
The sum of the 3 angles in a triangle = 180°
Subtract the sum of the 2 given angles from 180 for B
B = 180° - (90 + 39)° = 180° - 129° = 51°
Using the tangent and sine ratios in the right triangle for b and c
tan39° = =
Multiply both sides by b
b × tan39° = 27 ( divide both sides by tan39° )
b = ≈ 7.5 ( to the nearest tenth )
sin39° = =
Multiply both sides by c
c × sin39° = 27 ( divide both sides by sin39° )
c = ≈ 28.0 ( to the nearest tenth )
Answer:
-7y+8x
Step-by-step explanation:
-2y-x-5y+9x
Answer:
A.) 0.9cm, 1.2cm, 1.5cm
Step-by-step explanation:
The side ratios of the offered answers are ...
A — 3:4:5 . . . . . . obviously a right triangle
B — 3:5:5 . . . . . . isosceles, but not a right triangle
C — 3:4:6 . . . . . . an obtuse triangle
D — 3:2:5 . . . . . . not even a triangle (just a line segment)
_____
<em>Comment on 3:4:5</em>
This set of small integers appears often in problems involving right triangles. It is the smallest "Pythagorean triple" — a set of integers that satisfies the relationship of the Pythagorean theorem — and it is the only Pythagorean triple that is an arithmetic sequence (differences between the numbers are the same).
When you see a triangle with sides in these ratios, you know it is a right triangle. When you see a right triangle with two of the sides having a ratio of 3:4, 3:5, or 4:5 (where "5" is the hypotenuse), then you know the length of the remaining side.