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Damm [24]
3 years ago
10

Which expression is not a polynomial?

Mathematics
1 answer:
Nezavi [6.7K]3 years ago
7 0

Answer:

D.

Step-by-step explanation:

A term in a polynomial is a single number or a number multiplied by any number of variables. A polynomial is a sum of terms.

The only thing that can be done with variables in a polynomial is to multiply them by numbers or other variables. In a polynomial, you cannot: divide by a variable (have a variable in a denominator), have a root of a variable, have a log of a variable, have a variable as an exponent, etc.

All expressions are polynomials except for D. In D., the negative exponents mean division by variables.

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Find amplitude and midline of the function y=4cos(4)-5.
Nat2105 [25]
Amplitude: 4

If midline means center, it is -5
I'm also implying that there is an x in cos(4x)
7 0
3 years ago
Determine if the specified linear transformation is ​(a​) ​one-to-one and ​(b​) onto. Justify your answer. ​T: ​, ​T(​)​(​,​), ​
xz_007 [3.2K]

Answer:

C. T is not​ one-to-one because the standard matrix A has a free variable.

Step-by-step explanation:

Given

T(x_1,x_2,x_3) = (x_1-5x_2+4x_3,x_2 - 6x_3)

Required

Determine if it is linear or onto

Represent the above as a matrix.

T(x_1,x_2,x_3) = \left[\begin{array}{ccc}1&-5&4\\0&1&-6\\0&0&0\end{array}\right]  \left[\begin{array}{c}x_1&x_2&x_3\end{array}\right]

From the above matrix, we observe that the matrix does not have a pivot in every column.

This means that the column are not linearly independent, & it has a free variable and as such T is not one-on-one

8 0
2 years ago
Can someone match them fast plz
Ghella [55]

Answer:

the number of words made = w

the number of tiles not used = t

the points earned from words made = 10w

the points taken away from tiles not used = 3t

(srry if this is wrong but I believe it's correct)

3 0
3 years ago
Same question for this. Actually need help... ;-;​
Bess [88]
372 is the answer.
(9*6*3)+(10*7*3)=372
7 0
3 years ago
A Country’s population in 1990 was 134 million. In 2000 it was 139 million. Estimate the population in 2014 using the exponentia
Ivahew [28]

Answer:

167 million

Step-by-step explanation:

The ratio is 1 million people every 2 years

7 0
3 years ago
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