Answer:
$ 6
Step-by-step explanation:
Discount = 20% of 30
![= \frac{20}{100}*30](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7B20%7D%7B100%7D%2A30)
= 2 * 3
= $ 6
Difference between the sale price and the original cost = $ 6
The answer would be 28.
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Here's my work:
Remember PEMDAS:
- Parentheses
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Also, remember to always go left to right.
(6+2)^2-4*3
Square everything in the parenthesis.
36+4-4*3
Multiply where you see a multiplication symbol from left to right.
36+4-12
Add.
40-12
Subtract.
28
Done!
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I hope I was able to guide and help you on this.
The triangle STV is not a right angled triangle.
Explanation:
Given that STV is a triangle with side lengths of 7, 11 and 14 units
We need to determine that STV is a right angled triangle.
Using Pythagorean theorem, we have,
![c^2=a^2+b^2](https://tex.z-dn.net/?f=c%5E2%3Da%5E2%2Bb%5E2)
where
and ![b=11](https://tex.z-dn.net/?f=b%3D11)
Substituting the values in the above formula, we have,
![14^2=7^2+11^2](https://tex.z-dn.net/?f=14%5E2%3D7%5E2%2B11%5E2)
Squaring the terms, we get,
![196=49+121](https://tex.z-dn.net/?f=196%3D49%2B121)
![196=170](https://tex.z-dn.net/?f=196%3D170)
Since, both sides of the equation are not equal, then the triangle STV is not a right angled triangle.
Answer:
40 mi
Step-by-step explanation:
area= width*length