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love history [14]
2 years ago
7

Determine if the expression 9x^-2 is a polynomial or not. If it is a polynomial, state

Mathematics
2 answers:
Andrej [43]2 years ago
5 0

Answer:

9x⁻²  is not a polynomial

Step-by-step explanation:

A polynomial function is a function that involves non-negative integer powers of x such as a quadratic, cubic etc.

A polynomial is a function written in the form of ;

f{x} =aₙxⁿ+aₙ₋₁xⁿ⁻¹+-------+a₂x²+a₁x+a₀

The degree of a polynomial is the highest power of x in the expression

9x⁻² ----in this case, the power is negative thus this is not a polynomial.

xeze [42]2 years ago
4 0

Answer:

Not a polynomial

Step-by-step explanation:

 

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Write each statement as an algebraic expression.
12345 [234]
Just go through it phrase by phrase by phrase - one step at a time.

2*(       )
2*(x - 7)
\frac{2*(x - y)}{5*x*y}
6 0
3 years ago
Expand (- 3a - 5x) (- 2b - 4y).​
vekshin1

Answer:  −3a(−2b−4y).−5x(−2b−4y). to this  

6ab+12ay+10bx+20xy

Step-by-step explanation: hope this helps :)

8 0
3 years ago
Read 2 more answers
A pet store sells goldfish and hermit crabs,
Elis [28]

Answer:

Cost = \$28

Step-by-step explanation:

Given

Represent Goldfish with g and hermit crabs with h.

The first statement, we have:

7g + 3h = 26

The second statement, we have:

4g + 5h = 28

Required

Determine the selling price of 6 goldfish and 4 hermit crabs

The equations are:

7g + 3h = 26 --- (1)

4g + 5h = 28 --- (2)

Make g the subject in (2)

4g + 5h = 28

4g = 28 - 5h

Divide both sides by 4

g = \frac{1}{4}(28 - 5h)

Substitute \frac{1}{4}(28 - 5h) for g in (1)

7g + 3h = 26

7(\frac{1}{4}(28 - 5h)) + 3h = 26

\frac{7}{4}(28 - 5h) + 3h = 26

Multiply through by 4

4 * \frac{7}{4}(28 - 5h) + 4*3h = 26*4

7(28 - 5h) + 4*3h = 26*4

Open bracket

196 - 35h + 12h = 104

196 -23h = 104

Collect Like Terms

-23h = 104-196

-23h = -92

Make h the subject

h = \frac{-92}{-23}

h = \frac{92}{23}

h = 4

Substitute 4 for h in g = \frac{1}{4}(28 - 5h)

g = \frac{1}{4}(28 - 5*4)

g = \frac{1}{4}(28 - 20)

g = \frac{1}{4}(8)

g = 2

This implies that:

1 goldfish = $2

1 hermit crab = $4

The cost of 6 goldfish and 4 hermit crabs is:

Cost = 6g + 4h

Cost = 6*\$2 + 4*\$4

Cost = \$12 + \$16

Cost = \$28

5 0
3 years ago
A triangle has 2 sides that equal 5 inches. The other side equals 4 inches.
raketka [301]

It is an isosceles triangle because it has two equal sides and a hypotenuse.

We have given that

A triangle has 2 sides that equal 5 inches. The other side equals 4 inches.

We have to determine the type of the triangle

<h3>Which triangle has two sides that are equal?</h3>

An isosceles triangle can be drawn in many different ways. It can be drawn to have two equal sides and two equal angles or with two acute angles and one obtuse angle.

Therefore,It is an isosceles triangle because it has two equal sides and a hypotenuse.

To learn more about the triangle visit:

brainly.com/question/17335144

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3 0
2 years ago
Which of the following gives a single solution of the |x+3|- 2
topjm [15]

Answer:

x=-1

Step-by-step explanation:

given \left | x+3 \right |-2=0

\left | x+3 \right |=2

x+3=+2

x=-1,     also,  x+3=-2

                    x=-2-3=-5

hence x=-1 , -5 answer

6 0
3 years ago
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