Find the value of the expression 21

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Find the value of the expression 21 – 2a if a = 3.

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Asked 81 days ago|3/13/2023 10:18:30 PM

Updated 81 days ago|3/13/2023 10:37:27 PM

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User: Find the value of the expression 21 – 2a if a = 3.

Weegy: The value of the expression 21 - 2a if a = 3; 2 x 3 = 6; 21 - 6 =15.
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User: Simplify the algebraic expression: x(x + 3) + x(2x – 4) + 6

Weegy: There are 3 factors in the algebraic expression 2x(x + 5).
Score .8956

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Asked 81 days ago|3/13/2023 10:18:30 PM

Updated 81 days ago|3/13/2023 10:37:27 PM

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Rhed°88

Solution:
x(x + 3) + x(2x – 4) + 6 = x^2 + 3x + 2x^2 - 4x + 6 = 3x^2 - x + 6

Added 81 days ago|3/13/2023 10:37:27 PM

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Which expression is equivalent to 9x – 3y – 5x + 7y + x + y? Question 3 options:

Weegy: 9x – 3y – 5x + 7y + x + y = 9x - 5x + x - 3y + 7y + y = 5x + 5y The expression 5x + 5y is equivalent to 9x – 3y – 5x + 7y + x + y. (More)

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Expert Answered

Updated 75 days ago|3/19/2023 2:04:31 AM

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beyond_bonchy

Addition of similar terms in algebraic expression.
f(x)=9x-5x+x-3y+7y+y
f(x)=(9x-5x+x)-(3y-7y-y)
f(x)=5x-(-5y)
f(x)=5x+5y

Added 75 days ago|3/19/2023 2:04:31 AM

7 × (–3) × (–2)2 =

Weegy: 7+3=10 User: Find the solution of x – 13 = 25, and verify your solution using substitution. (More)

Question

Not Answered

Updated 74 days ago|3/20/2023 1:32:31 AM

6 Answers/Comments

MsAnyaForger

[Deleted]

Added 81 days ago|3/13/2023 10:41:52 PM

Deleted by MsAnyaForger [3/13/2023 10:42:05 PM]

MsAnyaForger

7 × (–3) × (–2)2 = - 21 × -4 = 84

Added 81 days ago|3/13/2023 10:42:18 PM

This answer has been confirmed as correct and helpful.

Rhed°88

[Deleted]

Added 81 days ago|3/13/2023 10:43:10 PM

Deleted by Rhed°88 [3/13/2023 10:43:14 PM]

Rowen

7 x (-3) x (-2)2=?

To get the product;

7x(-3)x (-2)2 =
(-21) x (-4)=

Therefore, the answer is positive 84 because negative(-) times negative(-) is equals to positive.

Added 78 days ago|3/16/2023 3:18:27 AM

mae01

[Deleted]

Added 74 days ago|3/20/2023 1:32:31 AM

Deleted by mae01 [3/20/2023 1:32:59 AM], Undeleted by mae01 [3/20/2023 1:33:05 AM], Deleted by mae01 [3/20/2023 1:33:05 AM]

Solve for the variable x in the equation –2.9 – x = –7.4.

Weegy: x/5 + 9 = 4; x/5 = 4 - 9; x/5 = -5; x = -5 * 5; x = -25 (More)

Question

Updated 75 days ago|3/19/2023 2:09:39 AM

2 Answers/Comments

Rhed°88

Solution:
-2.9 - x = -7.4
-x = -7.4 + 2.9
-x = -4.5
x = 4.5

Added 81 days ago|3/13/2023 10:41:52 PM

This answer has been confirmed as correct and helpful.

beyond_bonchy

Sol'n:
-2.9-x=-7.4
transpose the variable '-x' to the right side and '-7.4' to the left side of the equation
-2.9+7.4=x
x=4.5

Added 75 days ago|3/19/2023 2:09:39 AM

Find the solution of the inequality 5 > r – 3.

Weegy: 5 > r ? 3 ; -r > -3 - 5 ; -r > - 8 ; r User: Hugo scored 18 points in a recent basketball game, which was 5 points fewer than Toby scored. Write an equation for this situation, where t is the number of points Toby scored, and find how many points Toby scored (More)

Question

Not Answered

Updated 81 days ago|3/13/2023 10:51:48 PM

1 Answer/Comment

MsAnyaForger

Hugo scored 18 points in a recent basketball game, which was 5 points fewer than Toby scored. An equation for this situation is: T= 18+5, where t is the number of points Toby scored, and Toby points got 23 scored. Solution: T= 18+5 T = 23

Added 81 days ago|3/13/2023 10:51:48 PM

This answer has been confirmed as correct and helpful.

Which equation represents the total cost (c) of purchasing cans of vegetables(v) at a price of $1.18 per can? What is the total cost to purchase 98 cans of vegetables? Question 13 options:

(More)

Question

Not Answered

Updated 80 days ago|3/13/2023 10:57:13 PM

1 Answer/Comment

Rhed°88

Equation represents the total cost (c) of purchasing cans of vegetables(v) at a price of $1.18 per can and the total cost to purchase 98 cans of vegetables: c = 1.18v; $115.64

Added 80 days ago|3/13/2023 10:57:13 PM

This answer has been confirmed as correct and helpful.

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