Check my answers please:)
1.
Solve, round to nearest tenth if needed.
7r - 7 = 2r + 18
A. r = -5
B. r = 5 ***
C. r = 2.2
D. r = 1.2
2.
Solve, round to nearest tenth if needed.
2x + 12 = 18 - x
A. x = 3
B. x = 10
C. x = 6
D. x = 2 ***
3.
Solve, round to nearest tenth if needed.
8x - 3 = 15x + 18
A. x = -3 ***
B. x = 3
C. x = 2.1
D. x = .9
4.
Solve, round to nearest tenth if needed.
6y - 6 = 4y + 16
A. y = 2.2
B. y = -2.2
C. y = 11 ***
D. y = 5
5.
Solve, round to nearest tenth if needed.
3(x - 4) = 5(x + 2)
A. x = 11
B. x = -11***
C. x = 1
D. x = -1
Nvm - they are all right.
all correct. good work.
go to the head of the class, all correct.
Thanks:)
Hey I'm trying to get this and I understand some of it but I'm still struggling if anyone can explain how to do this it would be very mutch appreciated
B D A C B
1. B
2. D
3. A
4. C
5. B
is correct, thanks!
yeah it is b d a c b
Let's go through each question to check your answers:
1.
The given equation is: 7r - 7 = 2r + 18
To solve for r, we need to isolate the variable on one side of the equation. Let's start by subtracting 2r from both sides:
7r - 2r - 7 = 18
Simplifying the left side gives us:
5r - 7 = 18
Next, we can add 7 to both sides:
5r = 18 + 7
5r = 25
Finally, divide both sides by 5:
r = 25/5
r = 5
Your answer of r = 5 is correct. Well done! So, the correct answer is B. r = 5.
2.
The given equation is: 2x + 12 = 18 - x
To solve for x, let's start by adding x to both sides:
2x + x + 12 = 18
Combining like terms gives us:
3x + 12 = 18
Next, subtract 12 from both sides:
3x = 18 - 12
3x = 6
Finally, divide both sides by 3:
x = 6/3
x = 2
Your answer of x = 2 is correct. Good job! So, the correct answer is D. x = 2.
3.
The given equation is: 8x - 3 = 15x + 18
To solve for x, let's start by subtracting 15x from both sides:
8x - 15x - 3 = 18
Simplifying the left side gives us:
-7x - 3 = 18
Next, add 3 to both sides:
-7x = 18 + 3
-7x = 21
Finally, divide both sides by -7:
x = 21/-7
x = -3
Your answer of x = -3 is correct. Great job! So, the correct answer is A. x = -3.
4.
The given equation is: 6y - 6 = 4y + 16
To solve for y, let's start by subtracting 4y from both sides:
6y - 4y - 6 = 16
Simplifying the left side gives us:
2y - 6 = 16
Next, add 6 to both sides:
2y = 16 + 6
2y = 22
Finally, divide both sides by 2:
y = 22/2
y = 11
Your answer of y = 11 is correct. Excellent work! So, the correct answer is C. y = 11.
5.
The given equation is: 3(x - 4) = 5(x + 2)
Let's distribute the 3 on the left side and the 5 on the right side:
3x - 12 = 5x + 10
To solve for x, let's start by subtracting 3x from both sides:
-12 = 2x + 10
Next, subtract 10 from both sides:
-12 - 10 = 2x
-22 = 2x
Finally, divide both sides by 2:
x = -22/2
x = -11
Your answer of x = -11 is correct. Fantastic job! So, the correct answer is B. x = -11.
Great job on solving these equations correctly! Keep up the good work!