Sure thing!
![-3x-4y=-8\\ 3x+3y=9\\ ----------\\ 0x-1y=1\\ y=-1\\ ](https://tex.z-dn.net/?f=-3x-4y%3D-8%5C%5C%0A%203x%2B3y%3D9%5C%5C%0A----------%5C%5C%0A0x-1y%3D1%5C%5C%0Ay%3D-1%5C%5C%0A%0A)
since y = -1 we can just plug it into the first equation
Hi there!
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I believe your answer is:
"Add 4 to both sides, and then divide by 2. The solution is x = 12."
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Here’s why:
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- To solve for 'x', we would have to use inverse operations.
- We would first have to add four to both sides to undo the negative four. Addition is the opposite of subtraction.
- We would then divide by 2 to isolate 'x'. Division is the opposite of multiplication.
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![\boxed{\text{Solving for 'x'...}}\\\\2x - 4 = 20\\------------\\\rightarrow 2x - 4 + 4 = 20 + 4\\\\\rightarrow 2x = 24\\\\\rightarrow \frac{2x=24}{2}\\\\\rightarrow \boxed{x = 12}](https://tex.z-dn.net/?f=%5Cboxed%7B%5Ctext%7BSolving%20for%20%27x%27...%7D%7D%5C%5C%5C%5C2x%20-%204%20%3D%2020%5C%5C------------%5C%5C%5Crightarrow%202x%20-%204%20%2B%204%20%3D%2020%20%2B%204%5C%5C%5C%5C%5Crightarrow%202x%20%3D%2024%5C%5C%5C%5C%5Crightarrow%20%5Cfrac%7B2x%3D24%7D%7B2%7D%5C%5C%5C%5C%5Crightarrow%20%5Cboxed%7Bx%20%3D%2012%7D)
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Hope this helps you. I apologize if it’s incorrect.
Answer/Step-by-step explanation:
To solve the given expression,
, the following steps as well as justification for each step is given below:
Step 1: state the given expression
(given)
Step 2: solve for x by subtracting 12.7 from each side of the equation.
![x + 12.7 - 12.7 = -25.2 - 12.7](https://tex.z-dn.net/?f=%20x%20%2B%2012.7%20-%2012.7%20%3D%20-25.2%20-%2012.7%20)
Step 3: Apply the additive inverse rule and simplify (i.e the additive inverse of 12.7 is -12.7. when added, it gives us 0)
(additive inverse/simplification)
Step 4: additive identity rule (i.e. the 0 added to x = 0)
(identity property of addition)
Answer:
y=-9/4x+3
Step-by-step explanation:
Answer:
3/7
Step-by-step explanation:
The prime numbers that lie between 1 and 21 are 2,3,5,7,11,13,17, and 19. These 8 balls, plus the 10-ball comes to a total of 9 balls that could be picked out of the 21. Therefore, the probability of picking one of these balls is 9/21 or 3/7