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zaharov [31]
3 years ago
10

Write the expression -3x 2 + 2y 2 + 5xy - 2y + 5x 2 - 3y 2 in simplest form. Then, answer the following questions using complete

sentences. A)How many terms are in the simplified expression? B) How many of the terms in the simplified expression are negative?
Mathematics
1 answer:
Darina [25.2K]3 years ago
3 0

Simplify the following:

-3 x^2 + 2 y^2 + 5 x y - 2 y + 5 x^2 - 3 y^2

Grouping like terms, -3 x^2 + 2 y^2 + 5 x y - 2 y + 5 x^2 - 3 y^2 = (2 y^2 - 3 y^2) + 5 x y - 2 y + (5 x^2 - 3 x^2):

(2 y^2 - 3 y^2) + 5 x y - 2 y + (5 x^2 - 3 x^2)

2 y^2 - 3 y^2 = -y^2:

-y^2 + 5 x y - 2 y + (5 x^2 - 3 x^2)

5 x^2 - 3 x^2 = 2 x^2:

Answer: -y^2 + 5 x y - 2 y + 2 x^2

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2 years ago
Shane wrapped the kite with paper. How many square inches of paper did Shane use to cover the front and back? 45 POINTS
arsen [322]

Answer:

576

Step-by-step explanation:

First off, we can use the area of a kite formula, (D1*D2)/2 to get the area of one side of the kite, which is simplified to 18 * 32 : which gets us 288. But because we are looking for the area of the front and back side, we multiply 288 by 2- getting the final answer of <u>576</u>.

7 0
3 years ago
Read 2 more answers
A letter of application is intended to     
Travka [436]
I found the options online. I will state them and provide the answer. 

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8 0
3 years ago
What is the factored form of this expression? 4t2 − 27t + 18
seraphim [82]

Answer:

(4t − 3) (t − 6)

Step-by-step explanation:

Using AC method:

Given a quadratic ax² + bx + c, find factors of ac that add up to b.  Divide those factors by a and reduce.  The denominators become the coefficients and the numerators become the constants.

Here, a = 4, b = -27, and c = 18.

ac = 4 × 18 = 72

Factors of 72 that add up to -27: -3 and -24

Divide factors by a: -3/4 and -24/4

Reduce: -3/4 and -6/1

So the factored expression is:

(4t − 3) (t − 6)

5 0
3 years ago
All i need to know is if its a function or not (I will give branliest for a good explanation)
tankabanditka [31]

Answer:

It's fine. It is a function. The language can be very convoluted. Put simply a domain value cannot have 2 different range values.

Step-by-step explanation:

The confusing part I think, is probably the fact that -1 and 1 both have an answer of 5.

That's fine. Parabolas do that and they are functions. Two different xs can have the same value. The thing that eliminates functions is when the x value (the domain) has two different y values (the range values). Then you don't have a function.

To try and make it clearer if 1 pointed at both 3 and 5 you would not have a function.

8 0
3 years ago
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