Find the value of the variable in the expression 21(y + 1) = 0.
A) 1
B) 0
C) 21
D) -1
2007-05-31 05:25:08 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
D) -1
Start with 21(y + 1) = 0
Divide both sides by 21:
y + 1 = 0
Subtract 1 from both sides:
y = -1
Since y was the variable, -1 is "the value of the variable."
I hope I helped!
2007-05-31 05:28:56 · answer #1 · answered by Timothy H 4 · 0⤊ 1⤋
D) y= -1
2007-05-31 12:29:35 · answer #2 · answered by ironduke8159 7 · 0⤊ 1⤋
Hi,
For this question, you need to follow these steps:
Step 1: Distribute the 21 over the factor of y + 1 to get the following:
21y + 21 = 0
Step 2: Subtract 21 from both sides of the equation
21y = -21
Step 3: Divide by 21 on both sides of the equation to get the solution of:
y = -1 <== FINAL ANSWER
I hope that helps you out! Please let me know if you have any other questions!
Sincerely,
Andrew
2007-05-31 12:34:31 · answer #3 · answered by The VC 06 7 · 0⤊ 1⤋
D) -1
When y = -1
21 (y+1) = 21 (-1+1)
= 21 (0) Whatever number times 0 is zero
= 0
Thus , D is the correct answer
2007-05-31 12:34:19 · answer #4 · answered by HonuBaby 2 · 0⤊ 1⤋
-1
2007-05-31 12:31:40 · answer #5 · answered by mohamad b 1 · 0⤊ 1⤋
21(y + 1) = 0
21y + 21 = 0
21y = -21
y = -1
The answer would be D. I hope that this helps.
2007-05-31 12:29:54 · answer #6 · answered by math geek 3 · 0⤊ 1⤋
21y+21=0
21y=-21
y=-1
(d)
2007-05-31 12:34:24 · answer #7 · answered by Anonymous · 0⤊ 1⤋
d)
2007-05-31 12:38:00 · answer #8 · answered by (cici) 3 · 0⤊ 1⤋