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soldier1979 [14.2K]
3 years ago
6

Which expression is not a polynomial? A. 3x + 5 B. 2/5x - 21 C. 5 D. x^-3 + 5x

Mathematics
1 answer:
Anettt [7]3 years ago
7 0

Answer:

C. 5

Step-by-step explanation:

"<em>Polynomial</em>" means <em>consisting of several terms</em>, or more than one term.

In A, we see that there are 2 terms (3x and 5), and so it is a polynomial, specifically a <em>binomial.</em>

In B, we also see 2 terms (2/5x and -21), and so it is also a polynomial, specifically a <em>binomial.</em>

In C, we only see one term (5), and so it is a <em>monomial</em>, or having only one term.

In D, we can see 2 terms (x^-3 and 5x), and so it is also a polynomial, specifically a <em>binomial</em>.

~

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3 years ago
write the equation of a line that is perpendicular to the line y=-3/7-15 and that passes through the point (9,2)
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Answer:

Step-by-step explanation:

First substitue the coordinates to the equation so

x=9, y=2

you would get

2=-3/7(9) + b

we put b because we are trying to find the new slope

multiply the two numbers above

2=-3/6/7 + b

subtract the whole number from both sides

b= 5/6/7

in equation would be

y= -3/7 + 5/6/7

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3 years ago
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Answer:

13.567%

Step-by-step explanation:

We solve the above question, using z score formula

z = (x-μ)/σ, where

x is the raw score = 23.1 ounces

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σ is the population standard deviation = 1.0 ounce

More than = Greater than with the sign = >

Hence, for x > 23.1 ounces

z = 23.1 - 22.0/1.0

= 1.1

Probability value from Z-Table:

P(x<23.1) = 0.86433

P(x>23.1) = 1 - P(x<23.1)

P(x>23.1) = 1 - 0.86433

P(x>23.1) = 0.13567

Converting to percentage

= 0.13567 × 100

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2 years ago
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3 years ago
Please help as soon as possible!
AnnZ [28]

Answer:

D

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

To calculate m use the slope formula

m = ( y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (3, 6) and (x₂, y₂ ) = (8, 4)

m = \frac{4-6}{8-3} = - \frac{2}{5}, hence

y = - \frac{2}{5} x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

Using (8, 4), then

4 = - \frac{16}{5} + c ⇒ c = 4 + \frac{16}{5} = \frac{36}{5}

y = - \frac{2}{5} x + \frac{36}{5} ← equation of line

6 0
3 years ago
Read 2 more answers
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