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2 years ago

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Marcus states that the polynomial expression 3x3 – 4x2y + y2 + 2 is in standard form. Ariel states that it should be y2 – 4x2y +

3x3 +2. Explain which student is correct and why.

2 answers:

garri49 [273]2 years ago

7 0

Answer:

I know that ariel is wrong because 3x^3 is higher power than y^2

3x^3 goes first

then the mixed term -4x^2y

then the y^2

then the 2

marcus is right

Step-by-step explanation:

lora16 [44]2 years ago

4 0

Answer:

Here Ariel is wrong because 3x^3 is higher power than y^2

3x^3 goes first

then the mixed term -4x^2y

then the y^2

then the 2

So, Marcus is right

Standard form means that you write the terms by descending degree. here's main rules how to write polynomial expression in the standard form:

1. write the term with the highest exponent first (terms of third degree in our case 3x^3 );

2. write the terms with lower exponents in descending order (term -4x^2y followed by y^2 );

3. remember that a variable with no exponent has an understood exponent of 1 (here are no such terms);

4. a constant term (a number with no variable) always goes last (term 2).

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2 years ago

Value of x 9(2x-1)-9x - 18

bixtya [17]

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2 years ago

Read 2 more answers

Help having trouble understanding which one is trueee.

AlexFokin [52]

Answer:

The value of π = 22/7 = 3.14

So here the Equation given we can examine those

1. 3π -1 > 9

=> (3 * 3.14 ) -1 > 9

=> 9.42 – 1 > 9

=> 8.42 > 9 , which is false

2. 7π > 21

=> (7 * 3.14) > 21

=> 21.98 > 21 , Which is true

3. π + 4 < 7

=> 3.14 + 4 <7

=> 7.14 <7 , Which is false

4. (12/ 4π) > 1

=> {12/ (4 * 3.14)} > 1

=> (12/12.56) > 1

=> 0.955 > 1 , Which is false

Know more about “Mathematical equation ” here: brainly.com/question/116018

#SPJ9

6 0

1 year ago

What is the area of triangle DEF

kolezko [41]

Answer:

76.5 cm²

Step-by-step explanation:

Given the triangles are similar , then

ratio of sides = a : b , so

ratio of areas = a² : b²

Here ratio of sides = 9 : 13.5 = 2 : 3

ratio of areas = 2² : 3² = 4 : 9

let x be the area of Δ DEF and using proportion

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Natasha_Volkova [10]

Answer:

Step-by-step explanation:

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√(-3)² + (4)²

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If the diameter is 5, the radius is 2.5

Now we need to find the center/midpoint. Use the midpoint formula:

(5 + 2)/2, (-3 + 1)/2

7/2, -2/2

(3.5, -1)

Now that we have the center and the radius, we can make our equation. Remember that the equation of a circle is: (x - x of center)² + (y - y of center) = radius²

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Hope this helps

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