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Travka [436]
3 years ago
9

Simplify -2x^3 * xy^2

Mathematics
2 answers:
kobusy [5.1K]3 years ago
6 0
<span>-2x^3 * xy^2
= </span><span>-2x^4y^2
hope it helps</span>
katrin [286]3 years ago
3 0
-2x^4*y^2 here is your answer

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Jill is designing a picture frame for an art project. She plans to have a square piece of glass (x inches by x inches) in the ce
ra1l [238]
How would I at least start out those two problems? 

It looks to me like you already did. Now just follow through with it. 

If the length of each side of the frame's inner dimension (i.e. the glass) is x, and the length of each side of the frame's outer dimension is x^2 - 3, then the area of the frame is: 

A = (outer dimension)^2 - (inner dimension)^2 
27 = (x^2 - 3)^2 - (x)^2 
27 = x^4 - 6x^2 + 9 - x^2 
27 = x^4 - 7x^2 + 9 <----- This is where you got to already. 
0 = x^4 - 7x^2 - 18 
0 = (x^2 - 9)(x^2 + 2) 

Therefore, either x^2 = 9 or x^2 = -2... and you know it can't be the latter.
Thus, x^2 = 9 and therefore x = 3. The glass is 3" on each side. 

<span>Each (outer) side of the frame is x^2 - 3 = 9 - 3 = 6" </span>
4 0
3 years ago
Mariposa makes a quilt with cloth squares and triangles.
HACTEHA [7]

Answer:

She will need 4 square and 8 triangular pieces.

Step-by-step explanation:

For every 6 pieces of cloth, 2 are squares.

So, for 12 pieces of cloth, the no. of square pieces would be,

12 \times \frac {2}{6}

= 2 \times 2

= 4

As the remaining pieces will be triangles, so the no. of triangular pieces will be, equal to,

(12 - 4) = 8

5 0
4 years ago
Five less than twice a number is equal to one half the difference of three times the number and 13.
kondaur [170]

2x - 5 =  \frac{3x - 13}{2}
4 0
3 years ago
Read 2 more answers
What is this? 30 points!!!!
Andreyy89

Answer: X = -351

Step-by-step explanation:

5 0
3 years ago
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Increase 56 in the Ratio 2:3​
krok68 [10]

Answer:

86

Step-by-step explanation:

https://www.mathsteacher.com.au/year8/ch06_ratios/03_inc/Image13125.gif

7 0
3 years ago
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