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daser333 [38]
3 years ago
7

Find the difference (d - 9) - (3d - 1)

Mathematics
1 answer:
Neko [114]3 years ago
7 0

Answer:

-2d-8

Step-by-step explanation:

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3 years ago
State the domain of the numbers displayed in column x and column y. x y
ella [17]

We can not really tell in this question as you dont know the equation that is being used for the domain and range relationship but overall one should know that:

The set of values of the independent variable(s) for which a function or relation is defined as the domain of a function. Typically, this is the set of x-values that give rise to real y-values.

The range of a function is the complete set of all possible resulting values of the dependent variable (y, usually), after we have substituted the domain.


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3 years ago
What value of B makes the expression. x² + Bx + 81 a perfect square trinomial?
Oxana [17]

Answer:

B.) 18

Step-by-step explanation:

To find the correct b value we use this formula

b² - 4ac = 0

b = What we are solving for

a = 1

c = 81

b² - 4(1)(81) = 0

b² - 324 = 0

b² = 324

b = \sqrt{324}

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And 18 is one of the answer choices

So B.) 18 is the correct answer.

4 0
2 years ago
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elena-14-01-66 [18.8K]

Answer:

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Step-by-step explanation:

Since David only has $9.39 but he needs $15.00 for his purchase. So, you would subtract the $9.39 from the $15.00 to see how much more money David needs to make this purchase.

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