Answer:
14 hours
Step-by-step explanation:
Let's call the task 3x
The older bro does twice as younger so it would be 2x long and younger brother work x long
Since the totsl of work is 3x = 21 x woul be 21÷3 = 7
the older brother must work 2 × 7 = 14 hours long
Answer:
4
Step-by-step explanation:
Answer:
The sequence converges to 1
Step-by-step explanation:
Given

Require
Description of the sequence
The given sequence follows:

i.e.

For every term,

In other words,
as the value of n increases,
approaches 1
<em>Hence, (c) is true</em>
The measure of ∠BEC would be 80 degrees
15/20
Figure out what number to use for simplify
Which is 5
Divide the numerator and denominator by 5
15/5=3
20/5=4
Answer:3/4