Answer:

Step-by-step explanation:
Given 


Apply minus-plus rules




Answer:
the last one is correct 81+(-11)
it would equal 70 degrees F
Angle m∠1 if formed by a tangent and secant intersecting outside of circle. The intercepted arcs are arc LK and arc JK.
Thus;
Angle formed by Tangent and secant
=1/2(DIFFERENCE of Intercepted Arcs)
m∠1=1/2(mJK-LK)
Answer: m∠1=1/2(mJK-KL)
Answer:
last one(960)
Step-by-step explanation:
80 percent of 1200 is 960
80 percent...... Ratios are the same as fractions so its just like 4/5