(1)Is the Equation true, false, or open?
4y + 8 = 6y + 3
A. True; the expressionas are the same for all values of variables B. False; the expressions are never the same ******
C. Open; there is a varible
(12)Which equation is an Identity
A. 7 - (9x + 3) = -9x - 4
B. 6m - 5 = 7m +5 - m
C.10p + 6 - p = 12p - 3 (p - 2) *****
D. 3y + 2 = 3y - 2
(13)Which equation has no solution?
A. 5w + 4 - w = 9w -2 (w - 2)
B. 3x - 5 = 3x + 8 - x
C. 7z + 6 = -7z - 5
D. 4y + 5 = 4y - 6 *****
(14)Solve the following equation
3(x - 7) - x = 2x - 21
A. 7
B. -2
C. infinitely many solutions *****
D. no solution
(15)Solve the following equation.
4 + 2y = 9 + 2y
A. 4
B. -4
C. infinitely many solutions
D. no solution *****
Answer is *****, if it is wrong can you tell me how to solve it, Thankyou
@mixikamo is wrong i got a 3/19! Please do not use their answers.
1) C
Other answers are correct.
Is this for the unit 3 lesson 9 test
- 4 y + 8 = 4 ( 2 y - 2 ) - 2 ( - 16 + 8 y )
- 4 y + 8 = 4 ∙ 2 y + 4 ∙ ( - 2 ) - 2 ∙ ( - 16 ) - 2 ∙ 8 y
- 4 y + 8 = 8 y - 8 + 32 - 16 y
- 4 y + 8 = 8 y - 16 y - 8 + 32
- 4 y + 8 = - 8 y + 24
Add 8y to both sides
- 4 y + 8 y + 8 = - 8 y + 8 y + 24
4 y + 8 = 24
Subtract 8 to both sides
4 y + 8 - 8 = 24 - 8
4 y = 16
y = 16 / 4 = 4
Thankyou, and can you explain to me how it is c
And i have one more question that i need help on
Solve the following equation.
-4y + 8 = 4 (2y - 2) -2 (-16 + 8y)
A. y= -4
B. y= 4
C. y= -2
D. y= -6
bruuh I'll post the answers when I finish the test lmao
help I just got a 9/19😭
Mathematical statements with one or more VARIABLES
are called open sentences.
In statement:
4y + 8 = 6y + 3
variable is y