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RoseWind [281]
3 years ago
11

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.
Mathematics
2 answers:
garri49 [273]3 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]3 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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Sergio [31]

Answer:

exact form: x=20/9

decimal Form: x=2.222...

Step-by-step explanation:

8 0
3 years ago
A retail shop is replacing their flooring with laminate wood. The floor plan is shown below. Determine the total square feet of
Phantasy [73]
<h3>Answer:  1075 square feet</h3>

===========================================================

Explanation:

As shown in the diagram below, I've drawn a blue horizontal line to split the figure into two rectangles (smaller one up top, larger down below).

The smaller rectangle up top is 25 ft by 8 ft, giving an area of 25*8 = 200 sq ft.

The larger rectangle down below is 35 ft by 25 ft so we have an area of 35*25 = 875 sq ft.

The total area is 200+875 = 1075 square feet

Notes:

  • We can write "square feet" as "sq ft" or as "ft^2" without quotes.
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5 0
3 years ago
4. Jerry currently has an account balance of $1,109.80. His initial deposit on the account was $775 and it earned 2.7% simple in
lidiya [134]

Answer:

Hey there!

I=PRT

1109.8=775(0.027)T

1109.8=20.93T

53=T

Jerry had the account for 53 years.

Let me know if this helps :)

4 0
3 years ago
Read 2 more answers
Write a quadratic function f whose zeros are 1 and -12
Mandarinka [93]

Hello,

By definition, the following function meets the requirements

f(x)=(x-1)(x+12)=x^2+11x-12

Thanks

5 0
3 years ago
A board 30 metres long is to be divided into 2pieces so that the larger piece is 3 metres longer than twice the shorter piece. H
yawa3891 [41]

Answer: 9 and 21

Step-by-step explanation:

board=30m

divide by 2 pieces

one piece, we call it a

b, the other piece is b= 2a+3

a+b=30

a+2a+3=30

3a=30-3

3a=27

a=9

b=21

6 0
3 years ago
Read 2 more answers
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