Answer:
1). 8r + 7t
2). -48r² - 128rt + 20t²
3). 8r + 8t
NOTE: These are the most simplified form of each equation given, these might or might not me given in the answer choices, however these are correct.
Step-by-step explanation:
You just have to combine the similar values for each equation.
Hope this helps, good luck!
Answer:
The given point A (6,13) lies on the equation. True
The given point B(21,33) lies on the equation. True
The given point C (99, 137) lies on the equation. True
Step-by-step explanation:
Here, the given equation is :
Now,check the given equation for the given points.
1) A (6,13)
Substitute x = 6 in the given equation
⇒ y= 13
Hence, the given point A (6,13) lies on the equation.
2) B (21,33)
Substitute x = 21 in the given equation
⇒ y = 33
Hence, the given point B(21,33) lies on the equation.
3) C (99, 137)
Substitute x = 99 in the given equation
⇒ y = 137
Hence, the given point C (99, 137) lies on the equation.
Option A. Is the correct answer because you are multiplying 7, 5 times!
Answer:
-6y-y+2=58
-7y+2=58
-7y=58-2
-7y=56
-7y/-7=56/-7
y=-8
Answer:
4.2
Step-by-step explanation:
f varies inversly with L can be translated matimatically as:
● f = k/L
It takes 7 pounds of pressure to break a 3 feet long board.
Replace f by 7 and L by 3.
● 7 = k/3 => k=7×3=21
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Let's find tge length of a board that takes 5 pounds of pressure to be broken.
● 5 = k/L
● 5 = 21/L
● L = 21/5 = 4.2
So the board is 4.2 feet long