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Lapatulllka [165]
3 years ago
5

What are the coefficients of -4x - 7y + 21z?

Mathematics
2 answers:
kap26 [50]3 years ago
4 0

Answer:

-4, -7, 21

Step-by-step explanation:

Coefficients are a numerical or constant quantity placed before and multiplying the variable in an algebraic expression (e.g. 4 in 4x)

So in this problem -4, -7 and 21 are the coefficients

Sedaia [141]3 years ago
3 0

Answer:

-4

-7

21

Step-by-step explanation:

a coefficient is the number before the variable

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What is the solution to the following equation?
Pachacha [2.7K]

Answer:

x = 4

Step-by-step explanation:

8x - 9 = 6x - 1

Bring variables to the left side, whereas numbers to the right.

8x - 6x = - 1 + 9

2x = 8

x = 8 / 2

x = 4

3 0
3 years ago
Which polynomial is in standard form?
Tamiku [17]

Answer:

D). 5x^7y^2+7x^6y^5-14x^3y^7+51x^2y^9

Step-by-step explanation:

For better clarity let us re write the options

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B).8x^5-5y^4-2xy^5+x^2y

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D).5x^7y^2+7x^6y^5-14x^3y^7+51x^2y^9

To express polynomial with mixed variables in standard form, we begin by the highest coefficient of x to the smallest (we place high precedence on the coefficient  x terms)

5 0
3 years ago
Suppose a DVD costs $19 and a CD cost $14. Right in the inequality to find how many CDs you can buy along with one DVD if you ha
andrezito [222]

Answer: 19 + 14x ≤ 65

Explanation:

$19 is only added once because there is only one DVD purchased. $14 is added an unknown number of times, thus the variable X is included. We know that that the total number of dollars spent for both items is either less than or equal to 65. (Depending on your teacher, they may want you to write "19 + 14x < 65" if they want you to write the answer only for discrete numbers).

4 0
2 years ago
Which of the following is an arithmetic sequence with common difference –5?
kogti [31]

Answer:

A

Step-by-step explanation:

because 3-8= -5

and -2-3=-5

7 0
3 years ago
Read 2 more answers
What do exponential functions model in the real world? How does the
sineoko [7]

They model various situations where there is an increasing curve. An example is if you throw a baseball and it curves back down as gravity has more and more of a affect on it. This would be a different equation than if you threw a basketball as the basketball wouldn't go as high but would have about the same downwards acceleration due to gravity.

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2 years ago
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