Use your fingers.
Hold down the first finger on your left hand, nine fingers remain up. The answer is 9
For two hold down the second finger on your left hand. On the left is one finger standing, and on the right are 8 fingers standing. The answer is 18
This pattern works for everything up to ten. Then you remember 9 x 11 is 99. And 9 x 12 is 108
Answer:
13√2
Step-by-step explanation:
The parallel segment creates a similar triangle with half the area of the larger one. When the areas of the triangles have ratio 1/2, the linear dimensions of the triangles have a ratio that is the square root of that: √(1/2) = (√2)/2. Thus, the segment length is ...
26 · (√2)/2 = 13√2
Zona= 78.54 ...........................
Answer:
Step-by-step explanation:
Answer:
The tax rate is not needed
Total bill cost = $13
Step-by-step explanation:
Given that :
Tip left = 2.60
Tax = 5%
Tip left = 20% of after tax cost
To calculate the total bill amount, we do not need information about the tax rate.
Since the total amount paid = after tax amount
Tip left = 2.60 is equal to 20% the after tax cost
Let after tax amount = t
Then,
20% of t = 2.60
(20/100) * t = 2.60
0.2t = 2.60
t = 2.60/0.2
t = 13
Hence, total bill is $13