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GalinKa [24]
1 year ago
14

There are y cupcakes in the class. It is two more than 4 times the number of donuts (X). How many donuts are there in the class?

Mathematics
1 answer:
Snezhnost [94]1 year ago
6 0

Answer:

  (c)  x = (y -2)/4

Step-by-step explanation:

The given relationship between x and y can be solved for x.

__

<h3>given relation</h3>

There are 2 more cupcakes (y) than 4 times the number of donuts (x):

  y = 2 +4x

<h3>solve for x</h3>

  y -2 = 4x . . . . . subtract 2

  x = (y -2)/4 . . . . divide by the coefficient of x . . . . matches 3rd choice

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Use the zero product property to find the solutions to the equation 2x2 + x - 1 = 2
Firdavs [7]

Answer:

C

Step-by-step explanation:

Given

2x² + x - 1 = 2 ( subtract 2 from both sides )

2x² + x - 3 = 0

Consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term.

product = 2 × - 3 = - 6 and sum = + 1

The factors are - 2 and + 3

Use these factors to split the x- term

2x² - 2x + 3x - 3 = 0 ( factor the first/second and third/fourth terms )

2x(x - 1) + 3(x - 1) = 0 ← factor out (x - 1) from each term

(x - 1)(2x + 3) = 0

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3 years ago
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Step-by-step explanation:

3 0
3 years ago
Who knows how to solve these? I need help!!
Elina [12.6K]
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4 0
3 years ago
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Step-by-step explanation:

Part A - Where did Phillip make a mistake? Justify your answer using complete sentences.

Use order of operation (PEMDAS)

He should multiply 8 x 4 first

Part B - Solve the expression correctly in the space below.

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Part C - Use the same rules of order of operations to solve the expression (8-4) +9 x 3. Explain your steps as you solve it.

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Step-by-step explanation:


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