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Goshia [24]
3 years ago
15

What is the answer to 5n²/2n³×5n³

Mathematics
1 answer:
DanielleElmas [232]3 years ago
4 0
5n(n^2+n+7)-3n(n^2+2n) 

<span>5n^3+5n^2+35n-3n^3-6n^2 </span>

<span>2n^3-n^2+35n </span>

<span>n(2n^2-n+35)</span>
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phil ate three less than twice as many pancakes as sara. together they combined to eat 15 pancakes. How many pancakes did each e
Levart [38]

Answer:

Let x represents the Sara eat pancake and y represents the Phil eat the pancake.

As per the statement:

Phil ate three less than twice as many pancakes as Sara.

"Twice as many pancake as Sara" means 2x

"three less than twice as many pancakes as Sara" means 2x -3

⇒y = 2x-3         .....[1]

It is also given that together they combined to eat 15 pancakes.

⇒x+y =15      .....[2]

Substitute equation [1] into [2] we get;

x+2x-3 = 15

Combine like terms;

3x-3 =15

Add 3 to both sides we get;

3x = 18

Divide both sides by 3 we get;

x = 6

Substitute the value of x in [1] we get;

y = 2(6)-3 = 12-3 =9

y = 9

Therefore, the pancakes did each eat are;

Sara eat pancake = 6 and Phil eat pancake = 9


8 0
3 years ago
A student was asked to name all values of n that make the relation a function. Correct the error.
natta225 [31]

Answer:

1,2,3,

Step-by-step explanation:

I GOT THE ANSWER WRONG AND IT TOLD ME THE CORRECT ANSWER

3 0
3 years ago
X=8, y=20 find y when x=42
kherson [118]

You can make a proportion of 8/20 to 42/x and then simply cross multiply from there to solve for y
8 0
3 years ago
Read 2 more answers
Solve for x and y:<br> 3/x -1/y =13/10<br> 1/x + 2/y =9/10
harkovskaia [24]

Answer:

  (x, y) = (2, 5)

Step-by-step explanation:

I find it easier to solve equations like this by solving for x' = 1/x and y' = 1/y. The equations then become ...

  3x' -y' = 13/10

  x' +2y' = 9/10

Adding twice the first equation to the second, we get ...

  2(3x' -y') +(x' +2y') = 2(13/10) +(9/10)

  7x' = 35/10 . . . . . . simplify

  x' = 5/10 = 1/2 . . . . divide by 7

Using the first equation to find y', we have ...

  y' = 3x' -13/10 = 3(5/10) -13/10 = 2/10 = 1/5

So, the solution is ...

  x = 1/x' = 1/(1/2) = 2

  y = 1/y' = 1/(1/5) = 5

  (x, y) = (2, 5)

_____

The attached graph shows the original equations. There are two points of intersection of the curves, one at (0, 0). Of course, both equations are undefined at that point, so each graph will have a "hole" there.

3 0
3 years ago
Will mark BRAINLIEST! PLEASE HELP!
yulyashka [42]

Answer:

3 bob's burger= 23.67

2 starry night= 17.98

4 clear= 42

Step-by-step explanation:

3 x 7.89= 23.67

2 x 8.99= 17.98

4 x 10.50= 42

6 0
3 years ago
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