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zhannawk [14.2K]

4 years ago

6

Which expressions are polynomials?

1 answer:

slavikrds [6]4 years ago

3 0

Answer:

$6x^2+ 5x$

$-x^2 +5x$

Step-by-step explanation:

Expression is a polynomial when it contains variables, numbers and operators. Expression that contains fractional exponent is not a polynomial. Expression with variable in the denominator is not a polynomial.

$6x^2+ 5x$

It is a polynomial

$-7x^2+ \frac{5}{3x}$

It is not a polynomial because x is in the denominator

$-x^2 +5x$

It is a polynomial

$x^2+5x ^ \frac{1}{5}$

It is not a polynomial because it has fractional exponent

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Question 1 of 10 10 Points AB¯¯¯¯¯¯¯¯ is the diameter of circle T. Point A is located at (-4,2) and point B is located at (2,-8)

wariber [46]

Answer:

The coordinates of the center of this circle is (-1, -3).

Step-by-step explanation:

As we know that $A = (-4,2)$ and $B = (2,-8)$ are points lying on circle T, the center is the midpoint of the segment AB, whose location can be obtained from Midpoint formula:

$C = \frac{1}{2}\cdot A + \frac{1}{2}\cdot B$

$C = \frac{1}{2}\cdot (-4,2)+\frac{1}{2}\cdot (2,-8)$

$C = (-2, 1)+(1,-4)$

$C=(-2+1,1-4)$

$C=(-1,-3)$

The coordinates of the center of this circle is (-1, -3).

6 0

4 years ago

What is the solution to this equation x/5=15<br> a.x=75<br> b.x=20<br> c.x=3<br> d.x=10

Darina [25.2K]

$\dfrac{x}{5}=15\ \ \ \ |\cdot5\\\\\not5\cdot\dfrac{x}{\not5}=5\cdot15\\\\x=75$

Answer: a. x = 75

8 0

4 years ago

Please help me with this :)

pantera1 [17]

Answer: he did not win or loss any money.

Step-by-step explanation:

Both pictures were sold in $300... Then:

0.20 x $300 = $60

So he sold the first one in 360 but the second one in 240

240 + 360 = 600

As you can see he didnt win or loss money

4 0

4 years ago

Use the sentence to answer the question. The pond was so still that it looked like a silvery mirror under the moonlit sky. Which

Yuri [45]

Metaphor it’s given the pond a feature

3 0

3 years ago

A runner ran a 400 m race in 1 min 35 sec. Calculate his average speed in m/sec.

Kruka [31]

1 minute = 60 seconds

1 minute 35 seconds = 60 + 25 = 95 seconds

Speed = 400 meters / 95 seconds

Speed = 4.21 meters / second

3 0

3 years ago