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Irina18 [472]
3 years ago
14

Which expression is NOT equivalent to the other three?

Mathematics
1 answer:
Olin [163]3 years ago
6 0

Answer:

9(n - 9)  = 9n - 81

Step-by-step explanation:

Equivalent expressions are expressions which are equal . To determine if expressions are equivalent, simplify to lowest terms through combining like terms.

-9 - 7n + 16n  =  -9 + 9n

9(n - 9)  = 9n - 81

n - 9 + 8n  = -9 + 9n

9n - 9 = -9 + 9n

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I need help on this one
umka2103 [35]
You seem to have gotten m∠2. Remember that ∠1 and ∠2 are alternate interior angles, meaning they're both equal. Since they gave you m∠1 as being 26°, you now know the measure of ∠2.

As for m∠3 and m∠4, If you look at ∠3 you'll see that it is complementary to ∠1 (They both add up to 90°), so if you subtract m∠1 from 90° you'll have found m∠3. You find m∠4 the same way.

Hope this helped.
6 0
3 years ago
Please help!! Quickly
irina [24]

Answer:

The answer to your question is: a = 3.5 units

Step-by-step explanation:

Right triangle

to find a we need to use the trigonometric function cosine

cosine Ф = opposite leg / hypothenemus

Clear opposite leg from the equation

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a = opposite leg = 5 x cosine 45

a = 5 x 0.70

a = 3.5 units

7 0
3 years ago
Allison paid $297.50 for a new laptop. Last week, the price of the laptop<br> was $350.
Thepotemich [5.8K]

15%

350x0.15=52.5

350-52.5=297.5

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3 years ago
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yKpoI14uk [10]

A. 6 times 1=6 is the answer to which of the following is an example of identical property of multiplication

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4/15ths of 49. I know the answer but I can’t seem to figure out how to do the work so if someone could tell me the steps on how
DedPeter [7]

Answer:

.65

Step-by-step explanation:

Have you ever given up working on a math problem because you couldn’t figure out the next step? Wolfram|Alpha can guide you step by step through the process of solving many mathematical problems, from solving a simple quadratic equation to taking the integral of a complex function.

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3 years ago
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