Answer: -4 8/11, -4.79, 4.709, 4 7/9
Step-by-step explanation:
Answer:
z=12
Step-by-step explanation:
multiply both sides of the equation by 2
12=z
swap the sides of the equation
z=12
Answer:
you didnt say what we have to do
Answer:
150° and 210°
Step-by-step explanation:
1) according to the condition the required cosine is <0, it means the required angles are in the II-d and III-d quaters (see the attached picture no. 1);
2) it is known, that arccos(√3/2)=30°- the angle is between 0° and 90°, - but the requred angles are between 90° and 270° (see the picture no. 2), then
3) (angle)₁=180°-arccos(√3/2) and (angle)₂=180°+arccos(√3/2), then finally
(angle)₁=180°-30°=150°; (angle)₂=180°+30°=210°.
PS. note, the suggested way is not the only one.
Answer:
25 miles
Step-by-step explanation:
2.5/10=x/10
25= x