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2 years ago

13

10.

1 answer:

Alexxx [7]2 years ago

3 0

The correct answer is option C which is the given expression is cubic.

<h3>What is an expression?</h3>

Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication and division.

Given expression

5x³ + 2x − 3

The cubic expression is one in which the highest power of the variable is three or we can say that the degree of the expression is three so the expression will have three solutions.

Therefore the correct answer is option C which is the given expression is cubic.

To know more about Expression follow

brainly.com/question/723406

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10. 2x + 7y = 1<br> 2x - 4y = 12<br> Solve for y

adoni [48]

Answer:

The solution for y = -1.

Step-by-step explanation:

Given:

$2x\ +\ 7y\ =\ 1$ ....(1)

$2x\ -\ 4y\ =\ 12$ ....(2)

So, to solve for y, first we solve for x in equation (2):

$2x-4y=12$

⇒ $2x=12+4y$

Dividing both sides by 2,

⇒ $x=6+2y$

Now, substituting the value of x in equation (1):

$2x+7y=1$

⇒ $2(6+2y)+7y=1$

⇒ $12+4y+7y=1$

⇒ $12+11y=1$

⇒ $11y=1-12$

⇒ $11y=-11$

Dividing both sides by 11,

⇒ $y=-1$

Therefore, the solution for y = -1.

7 0

3 years ago

Mrs. Morton has a special reward system for her class. When all her students behave well, she rewarded him by putting 3 marbles

Law Incorporation [45]

Needs 76 more marbles

7 0

3 years ago

Christine bought 4 CDs that were each the same price. Including sales tax, she paid a total of $54.40. Each CD had a tax of $1.3

Basile [38]

Answer:

12.30

Step-by-step explanation:

1.30x4=5.20

54.40-5.20=49.20

49.20/4= 12.30

7 0

3 years ago

Ok. Keleiek 2/7=^++^*€€£|€|£|

nikdorinn [45]

What is that??????????????

3 0

3 years ago

Read 2 more answers

Help. plz help.............

Alex787 [66]

Answer:

1) communative property

2) difference

3) identitiy property

4) estimate

5) associative property

6) round

Step-by-step explanation:

hope this helps <3

5 0

3 years ago