Can someone explain how to do these problem and the formula
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For the first one, you would have to subtract 5 from 8 which would give you x=3!! that is your answer. For the second one, you would have to subtract 3 from -6 which would give you -a=-9, but were not done here yet, we are going to multiply this by -1 because you can't have a negative variable which will give you a=9. And last but not least, on the third one, you would have to subtract 21 from 30 which will give you c=9. There is no specific formula to do these problems other than to get rid of the "third wheel number".
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If, 2=5 3=10 4=17 5=??
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y = 30 + 5x
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Square root x=13
x=169
Hope you get it!
Final answer:
To solve the equation x^2√x-8+2=7, follow these steps: combine like terms, square both sides, simplify, take the cube root, and simplify again to find x = 3.
Explanation:
To solve the equation x2√x-8+2=7, we need to isolate the variable x. Here are the steps:
- Combine like terms: x2√x = 3.
- Square both sides of the equation to eliminate the square root: (x2√x)2 = 32.
- Simplify: x3 = 9.
- Take the cube root of both sides: (∛x3) = (∛9).
- Simplify: x = 3.
Therefore, the solution to the equation is x = 3.
Learn more about Solving equations with square roots here:
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no they are not because..
pentagon equation- 5x9
square equation- 4x9
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y=x-1 (label 2)
sub 2 in 1
2x-3(x-1)= -1
2x-3x+3= -1
-x+3= -1
-x=-4
x=4
sub x=4 into 2
y=4-1
y=3
therefore x=4 and y=3