P = - 22 +- root of ( 22^2 - 4* (-23) / 2
Hi there!
To solve this problem, we'll need to proceed methodically. First, we'll find the value of ST. Using the 30-60-90 relationship, we know that ST is equal to 2. Then, we need to find the value of RT. Again using the 30-60-90 relationship, we know that RT is equal to 4. Lastly, using the 45-45-90 relationship, we know that x = 4.
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Answer:
B
Step-by-step explanation:
The 115° angle is adjacent to both unknown angles in the triangles, thus
unknown angles = 180° - 115° = 65°
The sum of the 3 angles in a triangle = 180°, thus
∠ 1 = 180° - (65 + 80)° = 180° - 145° = 35°
∠ 2 = 180° - (65 + 85)° = 180° - 150° = 30°
Answer:
20π ft
Step-by-step explanation:
Formula: C=2πr, where C is the circumference and r is the radius.
r=10 ft.
C=2*π*10
=20π ft.
Answer:
b 15 - 4i sqrt(2)
Step-by-step explanation:
15 - sqrt (-32)
15 - sqrt(-1) sqrt(32)
15 - ±i sqrt(16) sqrt(2)
15 - ±4i sqrt(2)
Taking the principal square root
15 - 4i sqrt( 2)