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3 years ago

Robin says that polynomials are closed under division. Brad adamantly disagrees. Who is correct? Justify your answer.

1 answer:

6 0

Brad is correct.

Polynomials do not include negative exponents; this means there can be no variables in the denominator. If two polynomials do not divide evenly, the remainder is written as a fraction with the divisor (which can include a variable) in the denominator. This is not a polynomial.

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Which expression is a difference of squares with a factor of 5x − 8? 25x2 − 16 25x2 16 25x2 − 64 25x2 64.

SpyIntel [72]

The product of the factors (5x − 8) and (5x + 8) is 25x² − 64. Then the correct option is C.

<h3>What is polynomial?</h3>

Polynomial is an algebraic expression that consists of variables and coefficients. Variable are called unknown. We can apply arithmetic operations such as addition, subtraction, etc. But not divisible by variable.

One factor of the polynomial is given which is 5x − 8.

Then the polynomial will be

Let the other factor be 5x + 8

Then their product will be

(5x − 8)(5x + 8)

(5x)² − 8²

25x² − 64

More about the polynomial link is given below.

brainly.com/question/17822016

6 0

2 years ago

Andrea has four times the number of marbles that Jennifer has. If x equals the number of marbles that Jennifer has, which expres

sasho [114]

Answer:

Number of marbles Andrea has can be expressed as = $4x$ marbles

Step-by-step explanation:

Given:

Number of marbles Jennifer has = $x$ marbles

Andrea has 4 times the number of marbles that Jennifer has.

∴ Number of marbles Andrea has can be expressed as = $4\times x=4x$ marbles

7 0

3 years ago

each of equal sides of an isosceles triangle is 4cm greater than its height .If the base of triangle is 24 cm ,calculate the per

Montano1993 [528]

<h3>Answer:-</h3>

192 cm²

<h3>Step by step explanation :-</h3>

Let us take the height be x , then its side = x + 4. Now half of base will be 12 cm .

According to Pythagoras Theorem :-

=> base² + perpendicular ² = hypontenuse ²

=> 12² + x² = (x+4)²

=> 144 + x² = x² + 16 + 8x

=> 8x = 144-16

=> 8x = 128

=> x = 128/8

=> x = 16 cm .

Hence the height of ∆ is 16 cm .So the area will be half the product of base and altitude.

= 1/2 * 16 cm * 24cm .

= 192 cm²

<h3>★ Hence the area of the triangle is 192 cm² .</h3>

8 0

2 years ago

What angle measure is complementary to 87 degrees?

Papessa [141]

I’m pretty sure it’s 93. since a complementary angle is equal to 180, 87 + 93 = 180

3 0

3 years ago

Which letter is open?

kap26 [50]

Step-by-step explanation:

I'm sorry I don't understand the question pls forgive me

7 0

3 years ago