11/15-2/5
Multiply 2 and 5 to get a common denominator of 15
11/15-6/15
=4/15
It is 0.89%
Hope This Helps You!
<span>Good Luck Studying :)</span>
The formula of an area of a triangle:
We have:
substitute:
The formula of an area of a circle:
We have
Substitute:
The area of the shaded region
Divide the number of possible outcomes by the number of total outcomes.
Green: ≈ 0.55
Red: = 0.45
Since only red counters were added, this changes the probability of the counter being red to 0.6 or 60% and the probability of it being green to 0.4 or 40%. This means that the change in probability for the red counters was 15% or 0.15.
Set up a proportion:
, so x = 1.65, which rounds to 2 red counters.
We can prove this by adding 5 + 2 red counters. 7/11 = 0.6 or 60% chance.
Your final answer is 2 red counters were added.
Hope this helped. Get well soon.
ΔABC is not a right angled triangle.
Step-by-step explanation:
- Step 1: Given the perimeter of ΔABC = 22 cm, sides AB = 8 cm and BC = 5 cm. Find the side AC.
Perimeter = AB + BC + AC
⇒ AC = 22 - (8 + 5) = 22 - 13 = 9 cm
- Step 2: Find whether the triangle is right angled using Pythagoras Theorem which is Hypotenuse² = Side² + Base²
AC² = AB² + BC²
⇒ AC² = 9² = 81
⇒ AB² + BC² = 8² + 5² = 64 + 25 = 89
∴ AC² ≠ AB² + BC²
⇒ ΔABC is not a right angled triangle.