A. 2x+y=25; x+y=20
x represents cheese wafers and y represents chocolate wafers.
B. I will choose elimination since there is y and y. I can multiply one equation by -1 to get y and -y, which cancels out.
2x+y=25
-x-y=-20
Add equations
x=5
Plug x in
5+y=20
y=15
Final answer: 5 cheese wafers, 15 chocolate wafers
Trere are two correct answers.That are (-1,-7) and (-6,-14)
Answer:
Step-by-step explanation:
![a+b =1\dfrac{3}{5} + (-2)\\\\=\dfrac{8}{5}-\dfrac{2*5}{1*5}\\\\=\dfrac{8-10}{5}\\\\\\=\dfrac{-2}{5}\\\\\\2-c = 2-[-7] = 2+7 = 9\\\\\\dfrac{- I a + b I}{2-c}=\dfrac{\dfrac{-2}{5}}{9}\\\\=\dfrac{-2}{5}*\dfrac{1}{9}\\\\=\dfrac{-2}{45}\\\\](https://tex.z-dn.net/?f=a%2Bb%20%3D1%5Cdfrac%7B3%7D%7B5%7D%20%2B%20%28-2%29%5C%5C%5C%5C%3D%5Cdfrac%7B8%7D%7B5%7D-%5Cdfrac%7B2%2A5%7D%7B1%2A5%7D%5C%5C%5C%5C%3D%5Cdfrac%7B8-10%7D%7B5%7D%5C%5C%5C%5C%5C%5C%3D%5Cdfrac%7B-2%7D%7B5%7D%5C%5C%5C%5C%5C%5C2-c%20%3D%202-%5B-7%5D%20%3D%202%2B7%20%3D%209%5C%5C%5C%5C%5C%5Cdfrac%7B-%20I%20a%20%2B%20b%20I%7D%7B2-c%7D%3D%5Cdfrac%7B%5Cdfrac%7B-2%7D%7B5%7D%7D%7B9%7D%5C%5C%5C%5C%3D%5Cdfrac%7B-2%7D%7B5%7D%2A%5Cdfrac%7B1%7D%7B9%7D%5C%5C%5C%5C%3D%5Cdfrac%7B-2%7D%7B45%7D%5C%5C%5C%5C)
THEOREM:
- <u>Pythagorean theorem</u>:— In a right-angled triangle, the square of the hypotenuse side is equal to the sum of squares of the other two sides.
ANSWER:
By pythagorean property,
- x² = 10² - 8²
- x² = 100 - 64
- x² = 36
- x = √36
- x = 6 units.
So, <u>Correct choice</u> - [C] 6 units.
