2 ones + 0.9 tenths + 0.01 hundredths + 0.008 thousandths
Answer: it took them 7 hours to travel 49 miles.
Step-by-step explanation:
The exploratory scouts travel 32 miles in eight hours.
Speed = distance/time
It means that the speed at which they travelled 32 miles is
32/8 = 4 miles per hour.
The next day they had traveled 49 miles so they increase the speed by 3 mph. It means that the speed at which they travelled 49 miles is
4 + 3 = 7 mph
Time = distance/speed
Therefore, the time it took them to travel the 49 miles is
49/7 = 7 hours
x = 7.5° and y = 75°
Solution:
ΔMNO is equilateral triangle.
<em>Each angle in equilateral triangle is 60°.</em>
⇒ m∠MNO = 60°
⇒ 2x° + 4x° + 2x° = 60°
⇒ 8x° = 60°
Divide by 8 on both sides.
⇒ x° = 7.5°
In the 2 triangles which contain NM , NO and angles 2x° , 2x°
MN = ON ⇒ equilateral triangle
∵ 2x° = 2x° = 15°
m∠M = m∠O = 60° ⇒ equilateral triangle
∴ The two triangles are congruent.
The third angles in the two triangles are equal and their measure is
180 – (60 + 15) = 105°
105 + y° = 180 ⇒ straight angle
y° = 180 – 105 = 75°
y° = 75°
Hence x = 7.5° and y = 75°.
A thousandth = 1/1000 = 0.001
round 4th decimal place = 5
5 and over rounds up, under 5 rounds down
so answer is 3,989.237
