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Neko [114]
3 years ago
11

Find the sum and express it in the simplest form.(2y^2+9y+4)+(-3y^2-3y-9)

Mathematics
1 answer:
vampirchik [111]3 years ago
8 0
Since the operation between the two sets of parentheses is addition, we don't have to do anything with it, and can remove the parentheses.
Our new expression is: 2y^2+9y+4-3y^2-3y-9

Now, we just add like terms together to solve for the simplest form of the expression.
2y^2+9y+4-3y^2-3y-9
(2-3)y^2+(9-3)y+(4-9)
-y^2+6y-5

Our final answer is -y^2+6y-5.
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Find the equation of the line that is perpendicular to the given line and passes through the given point.
Solnce55 [7]

Answer:

y = 3x + 2

y = 6x – 3

y = 2/3x + 6

y = –1/3x – 4

y = 2x + 1

Correct answer:

y = 3x + 2

Explanation:

Convert the equation to slope intercept form to get y = –1/3x + 2.  The old slope is –1/3 and the new slope is 3.  Perpendicular slopes must be opposite reciprocals of each other:  m1 * m2 = –1

With the new slope, use the slope intercept form and the point to calculate the intercept: y = mx + b or 5 = 3(1) + b, so b = 2

So y = 3x + 2

7 0
3 years ago
Pls answer we just started doing this today and my teacher expects us to know this :(
irakobra [83]

Answer:

what is that?

Step-by-step explanation:

7 0
2 years ago
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1) What is the volume of this aquarium?<br> 5 in.<br> 6 in.<br> 5 in.<br> 10 in.<br> 18 in.
Flura [38]
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4 0
3 years ago
Worth a lot of points
lara [203]

Answer: -2, 2

Step-by-step explanation:

6 0
3 years ago
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What is the solution to the equation -x^3-4=0.5x^2+x+4​
Vedmedyk [2.9K]

Answer:

x = −2

Step-by-step explanation:

the steps are super long but this is the answer

4 0
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