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2 years ago

Use the elimination method to solve the system of equations. What is the correct ordered pair. Explain.

1 answer:

5 0

3y = x - 1...I am going to re-arrange this.....-x + 3y = -1

-x + 3y = -1
x - 2y = 2
---------------add...u will notice that the x's cancel
y = 1

3y = x - 1
3(1) = x - 1
3 = x - 1
3 + 1 = x
4 = x

solution is (4,1)

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Urgent! Will award brainliest... Factor the following polynomial: <img src="https://tex.z-dn.net/?f=3a%5E%7B2%7D-21a%2B3

umka2103 [35]

Answer:

$3 (a-2) (a-5)$

Step-by-step explanation:

The first step is to find the GCF. Here, it's 3.

$3(a^2-7a+10)$

Then, you factor the polynomial in the parenthesis.

To find the factors, you will need to find 2 numbers that add to -7, and multiply to 10. -2 and -5 add to -7 and multiply to 10. Now, replace -7a with the factors.

$a^2-2a-5a+10$

This of this polynomial as 2 problems.

$a^2-2a$ $-5a+10$

Then, factor again.

$a^2-2a$ $-5a+10$

$a(a-2)$ $-5(a-5)$

Then, you keep the factors in parenthesis, and combine the numbers on the outside.

$(a-2)(a-5)(a-5)$

Since, there are 2 of the same factor, you only need one.

$(a-2)(a-5)$

BUT REMEMBER!! In the very beginning, we had a 3 that we took out, we STILL need to add that to the final answer. The final answer is:

$3 (a-2) (a-5)$

7 0

2 years ago

How many terms are in the expression 5x^3-8x^2y+4xy-4

bazaltina [42]

Answer:

<h2>4 terms</h2>

Step-by-step explanation:

Term 1: 5x^3

Term 2: 8x^2y

Term 3: 4xy

Term 4: 4

8 0

2 years ago

At a sale on winter clothing,Cody bought two pairs of gloves and four hats for $43.00. Tori bought two pairs of gloves and two h

lara31 [8.8K]

First do 43 - 30= $13 for two hats
so for one hat you do 13 divided by 2 which equals= $6.50 for one hat

then you do 30 - 13= $17 for two pairs of gloves
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2 years ago

Which expression is equivalent to 8(2a)? 8(2 + a) 8 + 2a 8(a + a) a + 10

Nadusha1986 [10]

Answer:

8(2+a) is the answer that you need there really is not much thought to it

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2 years ago

Read 2 more answers

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Andrew [12]

Answer:

i cant see the image?

Step-by-step explanation:

if someone can please tell me what is shows

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1 year ago