3/4 of 8 miles is 6, so he ran 6 miles of the race.
Answer:
solution :
in the given figure AB=10.2cm, AC=14cm, AD=DC and AD perpendicular to BC.
now ,
in rt angle tirangle ADC,
angleACD=45 degree, angle DAC=45 degree now,
in triangle ABD,
angle BAD+angleABD+angleADB=180 DEGREE (sum of the sngle of triangle)
angle BAD+75+30=180
angle BAD=180-165 therefore,angle BAD=15
angle BAC =15+45=60
Area of triangle ABC=1/2×AB×AC×SIN 60
=1/2×10.2×14×√3/2
=61.83cm³ ans
Option D:
is the solution to the inequality in interval notation.
Explanation:
The number line shows the interval of numbers starting from 0 and goes on.
From the number line, it is obvious that the open circle at the point 0 indicates that we don't want to include the number 0.
Hence, in interval notation, we can write that the end values not to be included can be written with a round bracket ( )
Thus, the interval can be written as 
Hence, the solution to the inequality in interval notation is 
Therefore, Option D is the correct answer.