5/6, divide 3/4 to get 0.74 then divide 5/6 to get 0.84 for proof.
The speed upstream is the difference between the boat speed and the current speed. It is (12 mi)/(4 h) = 3 mph.
The speed downstream is the sum of the boat speed and the current speed. It is (32 mph)/(4 h) = 8 mph.
The speed of the boat is the average of these: (3 + 8)/2 = 5.5 mph.
The speed of the current is that less the difference: 5.5 - 3 = 2.5 mph.
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<u>Check</u>
Boat + Current = 5.5 + 2.5 = 8 mph
Boat - Current = 5.5 - 2.5 = 3 mph
The fastest racehorses can run a mile in a little over a minute and a half.
Answer:
20. 3
Step-by-step explanation:
23.6 - 2 × 3 ÷ 2 = 23.6 - 3
= 20.3
Answer:
The angle bisector is construct.
Step-by-step explanation:
We used the geogebra.org site. We first constructed a large triangle with acute angles. Then from point A we made a semicircular section to its sides. At the intersection of the sides and the semicircular section, we construct two circles so that they intersect. Then from the point A we draw a line through the intersection of the circles and thus we obtain the bisector of the angle.
We repeat the same procedure for point B and for point C. In this way, we obtain a bisector for all angles of a triangle.