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olga_2 [115]
4 years ago
9

Determine which expressions are polynomials. Explain your reasoning.

Mathematics
1 answer:
Tom [10]4 years ago
8 0

Answer:

A, B

Step-by-step explanation:

A polynomial is an expression containing two or more algebraic terms. They are often the sum of several terms containing different powers (exponents) of variables and never contains square roots or division by a variable.

In your case, option A contains two terms that with second and first power of x. Therefore, the expression in A is a polynomial. Option B contains three  terms that with second, first power of x and coefficient. This is a polynomial too. Option C represents the absolute value of x and doesn't represent a polynomial.

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Answer:

Total\ length =  8\frac{5}{8}\ miles

Step-by-step explanation:

Given

See attachment for ski trails

Required

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So:

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Total\ length = 3 * 2\frac{7}{8}

Express fraction as improper fraction

Total\ length = 3 * \frac{23}{8}

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8 0
3 years ago
How to solve for y if  the equation is y=5/2x + 5 if x is zero
Karolina [17]
y=\dfrac{5}{2}\cdot0+5\\
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5 0
3 years ago
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What is the factorization of the expression below?
sesenic [268]

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(4x)² - 7²

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4 0
3 years ago
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The area of a rectangle is 30 square root 3750 square inches, and the length is 3 square root 250 inches what is the width of th
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Answer:

width=10\sqrt{15}\ in

Step-by-step explanation:

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Given A=30\sqrt{3750} and l=3\sqrt{250}, we substitute in the formula to solve for the width as follows:

A=lw\\\\30\sqrt{3750}=3\sqrt{250}\times w\\\\w=\frac{30\sqrt{3750}}{3\sqrt{250}}\\\\w=10\frac{\sqrt{3750}}{\sqrt{250}}\\\\=10\times \sqrt{\frac{3750}{250}}\\\\=10\sqrt{15}\ in

Hence , the rectangle's width is 10\sqrt{15}\ in

6 0
3 years ago
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Answer:

the answer is 8.5

Step-by-step explanation:

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