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Lapatulllka [165]
3 years ago
12

Write an equivalent expression in standard form. (2x + 5)(x + 1)

Mathematics
1 answer:
Mrac [35]3 years ago
5 0
2x^2+7x+5

step by step
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Evaluate ( c + d ) 3 C=3 d=4
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Answer:

The answer is 21

Step-by-step explanation: You substitue 3 for C and 4 for D and craete the equation (3+4)3 so you add 3+4=7 and you get (7)3 which is 7 times 3 =21

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How does a number line help you compare numbers
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Will give Brainlest Answer please answer i need help
Rashid [163]

Answer:

  C.  {-1, 5, 8}

Step-by-step explanation:

Use each of the domain values in the function to see what the corresponding range value is.

  f(-1) = 5 -3(-1) = 8

  f(0) = 5 -3(0) = 5

  f(2) = 5 -3(2) = -1

The range is the set of numbers {-1, 5, 8}.

_____

<em>Additional comment</em>

The values in a set are generally listed lowest to highest. The coefficient of x in the equation for f(x) is negative, meaning the lowest range value will correspond to the highest domain value. If you start by finding f(2) = -1, you immediately eliminate all answer choices except B and C.

Those choices differ only in the middle value, so you can tell which is correct by evaluating f(x) for the middle domain value: f(0) = 5. Only one answer choice has both -1 and 5 in the set.

(There are two answers here: how you work the problem, and how you game a multiple choice question.)

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X^2-7x-6=0<br> Use the quadratic formula to complete the equation show step by step
asambeis [7]

Answer:

x  = 7  ± √73   / 2



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3 years ago
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What value added to x^2+2x would complete the square?
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D is the only one which would make sense :)
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