Answer:
The area of the triangle is 
Step-by-step explanation:
Let us use Heron's Formula for the area of a triangle
, where
- a, b, and c are the length of the three sides of the triangle
In Δ XYZ
∵ XZ = 8, YZ = 5, XY = 7
- At first find p
∵ 
∴ 
∴ p = 10
∵ 
- Substitute the values of p, XY, YZ, and XZ in the rule above
∴ 
∴ 
∴ 
- Simplify the root
∴ 
The area of the triangle is
Answer: 6.8%
Step-by-step explanation:
We need to find both percentage so we can determine the increase.
Finding percentage of $10 return: 1% return
Finding percentage of $78 return: 7.8% return
To find the percent increase we do 7.8%-1.0% = 6.8%
A mixed number is a combination of a whole number and a fraction. The fraction 9/2 is equal to 4.5. So you would have to find a mixed number in between 4.5 and 5. You could do this by turning 5 into a mixed number, which would be 10/2.
So now you have to find a mixed number in between 9/2 and 10/2. The best way to do this is multiply both numbers so that you can get a wider range of numbers. You would not be changing the end result, you would only be changing the size of the fraction.
I would multiply both mixed numbers by 2, which would get you 18/4 and 20/4. That would mean that a number in between these two mixed numbers is 19/4. (which would simplify to 4.75)
6 + 7 = 13 - 7 = 6 or 13 - 6 = 7
3x - 2y = -16
Slope intercept form is y = mx + b, so solve it for 'y'
First subtract 3x to both sides:
-2y = -3x - 16
Now divide -2 to both sides:
y = 3/2x + 8
