the working is there sorry for the messy handwriting
Answer:
The faster computer will complete the job in 20 minutes alone.
Step-by-step explanation:
Given that:
Time taken by both computers = 12 minutes
Time taken by slower computer = 30 minutes
Let,
x be the time taken by faster computer.
Hence,
The faster computer will complete the job in 20 minutes alone.
Answer:
Discount=20%
Profit=14.20%
Step-by-step explanation:
Let 'x' and 'y' be two complementary angles.
The sum of two complementary angles is always 90 degrees.
So,
(equation 1)
It is given that, one angle measures 39 degrees more than 2 times the measure of its complement.
So,
Substituting the value of 'y' from equation 1 in the above equation, we get
So,
Since,
Therefore, the measure of two angles are and .
1. <span>true
example:
2+3=3+2
5=5
2. </span><span>true
</span>example:
3*4=4*3
12=12
<span>
3. false
</span>example:
6-3=3-6
3≠-3
<span>
4. </span><span>true
</span>example:
(4 + 3) + 2= 4 + (3 + 2)
7 + 2 = 4 + 5
9 = 9
<span>
5. false
</span>example:<span>
(9 - 6) - 3 = 9 - (6 - 3)
</span>3 - 3 = 9 - 3
0 ≠ 6
6. true
example:
<span>2(3+4)= 2*3+2*4
2 * 7 = 6 + 8
14 = 14</span>