Answer:
A. 37.5°
Step-by-step explanation:
∠SPT can be considered an inscribed angle in the circumcircle. In that circle, arc ST would have a measure of 360°/8 = 45°. Angle y° is half that measure, so is 22.5°.
The external angles of a regular octagon are 360°/8 = 45°, so that is the measure of angles UTW and UVW. It is also the amount by which reflex angle TUV exceeds 180°.
The sum of the interior angles of quadrilateral TUVW is ...
45° +225° +45° +3x° = 360°
Then 3x° = 45° and x° = 15°.
Then the sum of interest is ...
x° + y° = 15° + 22.5° = 37.5°
Answer:
14.5
Step-by-step explanation:
Quotient is just division.
8.7/0.6
Since we're dividing by a decimal, the number goes up.
I like to divide by decimals in an easier way than long division: Fractions.
8.7 = 8 & 7/10 = 87/10
0.6 = 6/10
<u>87</u> ÷ <u>6</u>
10 10
KCF = Keep Change Flip
<u>87</u> x <u>10</u> = <u>870</u>
10 6 60
870/60 = 29/2 = 14.5
Proof:
8.7 ÷ 14.5 = 0.6
Answer:¿Es 4x² + 20x o 4x-20x?
Step-by-step explanation: