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lawyer [7]
3 years ago
13

(4x^2-8xy+2y^2)-(9x^2-4xy-7y^2)

Mathematics
1 answer:
ra1l [238]3 years ago
4 0

Answer:

-5x^2-4xy+9y^2

Step-by-step explanation:

You might be interested in
6. A box in the shape of a cube has an interior side length
vladimir1956 [14]

Answer:

think it is 183 - π(6)2(12) or J because it is the closes

Volume of packing materials = Volume of box - volume of cylinder

Since the box has same shape as a cube, the volume = L3

Where L is the lenght of the box

Volume of a right circular cylinder = πr2h

where r is the radius and h is the height

Volume of packing materials = L3 - πr2h

hope this will or can (even maybe) helps

3 0
3 years ago
Brenda and her best friend went on a vacation together. They both paid for a flight, and Brenda had a fancy room for $150 per ni
Mila [183]

Answer:

A. 2x + 150y = 1,500

   2x + 120y = 1,320

The flights were $300 each, and they stayed 6 nights.

B. $1,380

Step-by-step explanation:

Let x be the cost of the flight (in one side) and y be the number of nights on their vacation.

A. Brenda had a fancy room for $150 per night, then she paid $150y for y nights.  Brenda's total is $1,500, then

150y+2x=1,500

Brenda's friend had a smaller room for $120 per night, then she paid $120y for y nights.  Brenda's friend total is $1,320, then

120y+2x=1,320

Subtract two equations:

150y+2x-120y-2x=1,500-1,320\\ \\30y=180\\ \\y=6

Substitute into the first equation:

150\cdot 6+2x=1,500\\ \\900+2x=1,500\\ \\2x=600\\ \\x=300

Hence

2x + 150y = 1,500

2x + 120y = 1,320

The flights were $300 each, and they stayed 6 nights.

B. If a third friend joined them and stayed in a mid-range room for $130 per night, then he paid \$130\cdot 6=\$780

The total cost is

\$780+\$600=\$1,380

7 0
4 years ago
Whats the area of this
Fantom [35]
Area of a parallelogram= base*height
A=14*8
A=112m²
The area of this figure is 112m²
7 0
3 years ago
How we supposed to find the answer?
Gnoma [55]

Answer:

5^6

Step-by-step explanation:

(5^3)^2

We know that a^b^c = a^(b*c)

5^(3*2)

5^6

8 0
3 years ago
Read 2 more answers
What’s the area of the triangle??
viktelen [127]
Note that one side is 20 ft, and the other is 16.

This means that the side that is part of the triangle is 4 ft.

The measurement is still the same for the triangle's height.

Find the area of the rectangle:
24 x 16 = 384
Find the area of the triangle:
4 x 24 = 96

Add the two numbers together:

384 + 96 = 480

You're answer is (C)

hope this helps
5 0
4 years ago
Read 2 more answers
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