9514 1404 393
Answer:
16. 134°
17. 20°
18. 94°
Step-by-step explanation:
An inscribed angle is half the measure of the arc it intercepts.
__
16. Arc QT is twice the measure of inscribed angle QST, given as 67°.
Arc QT = 2×67°
Arc QT = 134°
__
17. Angle STR is half the measure of arc SR, so is ...
m∠STR = (arc SR)/2 = 40°/2
m∠STR = 20°
__
18. Arc RST is a semicircle, so has a measure of 180°. Then arc ST is the difference between that and arc RS:
arc ST = 180° -40° = 140°
Angle RST subtends a semicircle, so is 180°/2 = 90°. We know angle QST is 67°, so the remaining portion, angle QSR must be the complement of that:
m∠QSR = 90° -67° = 23°
Arc RQ will be twice this measure, or 46°.
So, the desired difference is ...
mST -mRQ = 140° -46° = 94°
Answer: (x+4)^2 -1
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
If you start to ask after 10:00 am, a lot of people isn't drinking caffeine. And, were trying to figure out the average.
Answer:
It is 30°
Step-by-step explanation:
Putting the formula exterior angle of a triangle = the sum of 2 interior angles of a triangle.
let the angle be x;
Therefore,
80°+x = 110°
x = ( 110 - 80 )°
x = 30°
The answer is 24.
This is because you have to convert 150m into cm. So times that by 10. So 150m=1500cm.
Now you divide 1500/65 which is 23.07.
And round up the answer would be 24.
Hope this helps