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Ostrovityanka [42]
3 years ago
13

I need help answering this!!! I just need help on how to do it or fragments of an answer. If you give me the straight-up answer

I guess that's fine too. I'm doing the worst in math (a D out of my As and Bs is NOT ok in my house) and I really need help on this. It's 20 points and I hope someone helps soon...
Question:
"In this unit, you solved two-step equations. A two-step equation is an equation of the form px + q = r. It takes two steps to solve for the variable x. For example, 3x + (-5) = 19 is a two-step equation. How could you transform this particular equation to create a three-step equation? List several ways you could transform it using common math operations."

Second part:
"Next, try solving one of the three-step equations you created for x. (Use a guess and check strategy, if necessary.) What additional step was required to find the solution? In your opinion, is solving a three-step equation more difficult than solving a two-step equation? Why or why not? Do you think there is a limit to the number of steps it takes to solve an equation? Explain."
Mathematics
1 answer:
Marizza181 [45]3 years ago
8 0
First part 3x+(-5)=19 you need to remove parenthesis move the constant -5 to the right to have 3x=19+5 then add those to get 3x=24 then divide to get x=8
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The value of y is directly proportional to the value of x If y=81 when x=54, what is the value of y when x=38
Arisa [49]

Answer:

y = 57

Step-by-step explanation:

y α x

y = kx ; k = Constant of proportionality

81 = k* 54

k = 81/54

k = 1.5

Value of y when x = 38

y = kx

y = 1.5 * 38

y = 57

Hence, y = 57 when x = 38

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3 years ago
A rectangular auditorium seats 1702 people. The number of seats in each row exceeds the number of rows by 9. Find the number of
klemol [59]

We have been given that a rectangular auditorium seats 1702 people. Also, the number of seats in each row exceeds the number of rows by 9.

Let us assume that there are x rows in the auditorium. Therefore, there must be (x+9) seats in the each row. This will also be equal to the number of columns in the auditorium.

Therefore, we can set up an equation as:

x(x+9)=1702\\x^{2}+9x=1702\\x^{2}+9x-1702=0

We can now factor this quadratic as shown below:

x^{2}+9x-1702=0\\(x-37)(x+46)=0

Upon solving this equation, we get:

x=-46,37

Since number of rows cannot be negative. Therefore, there must be 37 rows in the auditorium. And hence, the number of seats in each row will be 37+9=46 seats.



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