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Aleonysh [2.5K]
3 years ago
11

Which polynomial identity will prove that 49 − 4 = 45?

Mathematics
1 answer:
nika2105 [10]3 years ago
7 0
Answer:
Option A is correct
Difference of squares identity should be used to prove 49-4 =45
Step-by-step explanation:
Prove that : 49 - 4 = 45
Polynomial identities are just equations that are true, but identities are particularly useful for showing the relationship between two apparently unrelated expressions.
Difference of the squares identity:
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D

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What is the domain of function of f(x)=-2x+4x
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3 years ago
Billie Holiday sells children's clothing for Sara Vaughn's Toddler Shop. Baby blankets sell for $29.99 after a markup rate based
Mariulka [41]

Answer:

Cost: $14.349

Markup: $15.649

Step-by-step explanation:

1. Rewrite the percent as decimal. Divide it by 100, as following:

 109/100=1.09

3. Now, knowing that Baby blankets sell for $29.99 after a markup rate based on cost of 109%, you can write the following expresion:

x+1.09x=29.99

Where x is the cost.

 4. You must solve for x, then, you obtain:

2.09x=29.99\\x=\frac{29.99}{2.09}\\x=14.349

5. The markup is:

M=29.99-14.349=15.649

6 0
3 years ago
Read 2 more answers
the price of a 14 oz box of crackers is $2.94. the price of a 20 oz box is $3.60. what is the difference in price per ounce ?​
solong [7]

Answer:

The difference in price per ounce of the boxes is $0.03 or 3 cents.

Step-by-step explanation:

Divide each dollar amount by the ounces. The answer to $2.94 divided by 14 is 21 cents. $3.60 divided by 20 is 18 cents. Subtract 18 cents from 21 cents to get 3 cents.

4 0
3 years ago
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