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9966 [12]
3 years ago
14

+{-x2y+[-(x2y-2xy2+y2)+(-xy2-3y2+x2y)]-(10y2-x2y)}

Mathematics
1 answer:
Kay [80]3 years ago
6 0

Answer:

3xy² -  14y²      

Step-by-step explanation:

I hope that this is the problem

   - x²y + [ - (x²y - 2xy² + y²) + (xy² - 3y² + x²y)] - (10y² - x²y)

= - x²y + [ - x²y + 2xy² - y² + xy² - 3y² + x²y] - 10y² + x²y

Now combine like terms in the [  ].

= - x²y  + [ -x²y + x²y + 2xy² + xy² - y² - 3y² ] - 10y² + x²y

= - x²y  + [ 0 + 3xy² - 4y²] - 10y² + x²y

= - x²y + 3xy² - 4y² -10y² + x²y                      Now combine like terms

=   (-x²y + x²y) + 3xy² + (-4y² - 10y²)

=       0 + 3xy² - 14y²

=  3xy² -  14y²       or    y²(3x - 14)

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6 0
3 years ago
The shortest adult skeleton at Mütter stands 3 1/2 feet. The tallest skeleton in the museum stands 2 1/7 times taller. How tall
Romashka [77]
You add 3 1/2 to 2 1/7 to get the tallest skeleton.

3 1/2 = 7/2 and 2 1/7= 15/7

First you find common denominators for both fractions. 2 and 7 go into 14.

2 times 7 equals 14
7/2 * 7 = 49/14

7 times 2 equals 14
15/7 * 2 = 30/14

49/14 + 30/14= 79/14

then you simplify 79/14.... 14*5= 70 and 9 are left over. 5 9/14

 
5 0
4 years ago
A tin of baked beans has a base area of 120 cm². Calculate the volume of the cylinder with a height of 10cm.
Vitek1552 [10]

Answer:

1,000cm^{3\\}

Step-by-step explanation:

1. Volume= length x width x height

2.  10 x 10= 100

3. 100 x 10= 1000

So the volume of the cylinder is 1,000 cm^{3\\}

7 0
3 years ago
A frozen dinner is divided into 3 sections on a circular plate with a 12-inch diameter. The central angle formed by the peach co
Vsevolod [243]

Answer:

D. 5 inches

Step-by-step explanation:

Given:

A frozen dinner is divided into 3 sections on a circular plate with a 12-inch diameter.

That means complete angle having 360° is divided into 3 section.

The central angle formed by the peach cobbler is 105 degrees.

The central angle formed by the pasta is 203 degrees.

<u>Question asked:</u>

What is the approximate length of the arc of the section containing the peas?

<u>Solution:</u>

The central angle formed by the peas = 360° - 105° - 203°

                                                                = 52°

Ridius,r=\frac{Dameter}{2} =\frac{12}{2} =6\ inches

As we know:

Length\ of\ arc=2\pi r\times\frac{\Theta }{360}

                        =2\times\frac{22}{7} \times6\times\frac{52}{360} \\ \\ =\frac{13728}{2520} \\ \\ =5.44\ inches

Therefore, the approximate length of the arc of the section containing the peas are 5 inches.

6 0
3 years ago
I need help on this problem, i checked some that I think might be right, could I get some help on it?
tatuchka [14]
I don’t know what the answer is
7 0
2 years ago
Read 2 more answers
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