Answer:
Step-by-step explanation:
The error occured where the distributive property was applied. 3 × -4 should give us -12 not +12.
Here's the correct way to solve the equation
3(x - 4) = -9
3x - 12 = -9 (distributive property)
3x - 12 + 12 = -9 + 12 (addition property of equality)
3x = 3
3x/3 = 3/3 (division property of equality)
x = 1
Answer:
16 + x2 = 0 (16)
I THINK
Step-by-step explanation: Simplifying
3x2 + 48 = 0
Reorder the terms:
48 + 3x2 = 0
Solving
48 + 3x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-48' to each side of the equation.
48 + -48 + 3x2 = 0 + -48
Combine like terms: 48 + -48 = 0
0 + 3x2 = 0 + -48
3x2 = 0 + -48
Combine like terms: 0 + -48 = -48
3x2 = -48
Divide each side by '3'.
x2 = -16
Simplifying
x2 = -16
Reorder the terms:
16 + x2 = -16 + 16
Combine like terms: -16 + 16 = 0
16 + x2 = 0
The solution to this equation could not be determined.
Answer:
18
Step-by-step explanation:
To find the number, write an algebraic equation with the given information. Let the variable n represent the unknown number.
Now, break it by parts - "three times a number" would be . The "is" means that it equals something, giving us . "36 less than 5 times the number" would be subtracting 36 from whatever 5 times the number is: . So, put it all together and it is .
Next, solve the equation for n. The answer will be the number.
Thus, the number is 18.
Answer:C
Step-by-step explanation:
9×4=36
2×.5×4×3=12
36+12=48
Answer:
1.39
Step-by-step explanation:
nearest hundredth is 9
therefore 1.39 ig