The correct expression that is equivalent to the algebraic expression -5x - 15 + 25x - 30 is -5(-4x + 9).
<h3>How to determine the equivalent expression</h3>
We shall simplify the given algebraic expression by carrying out basic mathematics operations as follows;
Given: -5x - 15 + 25x - 30
we group like terms together
25x - 5x - 15 - 30
20x - 45
the number 5 is a common factor of 20x and 45, so we have that;
5 × 4x - 5 × 9
by factoring out 5
5(4x - 9)
also;
5(4x - 9) = -5(-4x + 9)
Therefore, -5(-4x + 9) is an equivalent expression to the algebraic expression -5x - 15 + 25x - 30
Learn more about equivalent expression here: brainly.com/question/24734894
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Answer:
0.75s
Step-by-step explanation:
The expression would be 0.75s where 0.75 represents the cost of the item after the 25% sale, and s representing the regular cost of the item.
Hope this helps :)
Answer:
How could you represent the total amount of money spent on bread? ... When someone is having trouble with algebra, they may say, “I don't speak math! ... and we want to be able to translate these phrases into algebraic expressions. Consider ... 36. 3. Write a function rule for the table. hours. 0. 1. 2. 3 cost. 15. 20. 25. 30. 4.
Step-by-step explanation:
How could you represent the total amount of money spent on bread? ... When someone is having trouble with algebra, they may say, “I don't speak math! ... and we want to be able to translate these phrases into algebraic expressions. Consider ... 36. 3. Write a function rule for the table. hours. 0. 1. 2. 3 cost. 15. 20. 25. 30. 4.
A = r/2L
A(2L) = r/2L(2L) (multiply 2L to both sides to isolate r)
A(2L) = r is your answer
hope this helps
<u>Answer:</u>
The correct answer option is 0.
<u>Step-by-step explanation:</u>
We know the quadratic formula that we use to find the roots of a quadratic equation:
The discriminant in this formula is the part underneath the square root symbol i.e. b^2-4ac.
For a quadratic equation to have exactly one real number solution, the discriminant must be zero.
As we can see the + and - sign appearing before the discriminant here so for one real number solution, these plus and minus signs need to be removed which can only happen if we have a value of zero.
