Which equation is an identity? 11 – (2v + 3) = –2v – 8 11 – (2 v + 3) = –2 v – 8 5w + 8 – w = 6w – 2(w – 4) 7m – 2 = 8m + 4 – m 7 8y + 9 = 8y – 3
5w + 8 – w = 6w – 2(w – 4)
Which equation has no solution 5v + 3 = 5v – 5 2x – 4 = 2x + 7 – x 2y + 5 – y = 2y – 3(y – 6) 7z + 9 = –7z – 6
5v + 3 = 5v – 5
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You're welcome! If you have any other questions, feel free to ask.
3(x - 7) - x = 2x - 21
This is an identity. Simplifying the left side of the equation:
3x - 21 - x = 2x - 21
Which simplifies further to:
2x - 21 = 2x - 21
Both sides of the equation are equal, so this equation is an identity, meaning it is true for all values of x.
solve
Since both sides of the equation 3(x - 7) - x = 2x - 21 are equal for all values of x, there is no unique solution to solve for. This is an identity equation, which means all values of x are solutions.
Which of these four is correct for that equation
7
-2
infinitely many solutions
no solution
The correct answer is "infinitely many solutions" because the equation is equivalent on both sides, regardless of the value for x. This type of equation is known as an identity.
4 + 2y = 9 + 2y
The equation 4 + 2y = 9 + 2y has no solution. Although the y-terms on both sides of the equation are the same, the constant terms (4 and 9) are not. This means that there are no values of y that would make this equation true.
WHich of these four is correct for that equation
4
-4
infintely many soloutions
no solution
The correct answer is "no solution" for the equation 4 + 2y = 9 + 2y.
Ella and Margaret were at a carnival. They each got a ticket for the Ferris wheel. Ella got a snow cone, and Margaret got a cotton candy. Ella had a certificate for $6 off the cost. Margaret paid the rest, which came to $12.75. Each Ferris wheel ticket was $5, and a snow cone was $3.50. What was the cost for cotton candy?
The total cost of what Ella had spent was 5 (for Ferris wheel ticket) + 3.5 (for snow cone) = $8.5. But she had $6 off, so the actual cost that she paid was 8.5 - 6 = $2.5.
Since Margaret paid the balance, which was $12.75, we subtract what Ella actually paid from what Margaret paid to find the cost of the cotton candy.
So it's 12.75 (Margaret`s payment) - 2.5 (Ella's actual payment) = $10.25.
Therefore, the cost of the cotton candy was $10.25.
Which us correct
$5.00
$5.25
$2.50
$7.25
The correct answer for the cost of the cotton candy is $10.25. However, none of the choices provided matches this solution. If these are the only options, there seems to be a mistake in either the problem or the answer choices.
r u sure
My apologies for the confusion, I made a mistake. Let's correct it:
Ella paid $5 for the Ferris wheel ticket and $3.50 for the snow cone, a total of $8.50. But she had a $6 discount, so she paid $8.50 - $6 = $2.50.
Margaret paid $12.75 in total, which covered her own Ferris wheel ticket, the cotton candy, and the $2.50 Ella "paid" after the discount.
So, if we subtract the Ferris wheel ticket price and Ella's part from Margaret's total payment, we find the price of the cotton candy:
$12.75 - $5.00 (Ferris wheel ticket) - $2.50 (what Ella paid) = $5.25.
So, the cost of the cotton candy was $5.25.