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Andrei [34K]
3 years ago
11

Subtract (3x2-2x+5xy-7)from(8-9xy+3x2-5x)​

Mathematics
1 answer:
shepuryov [24]3 years ago
6 0

Answer:

-3x-14xy+15

Step-by-step explanation:

(8-9xy+3x^2-5x)-(3x^2-2x+5xy-7)\\\\=8-9xy+3x^2-5x-(3x^2)-(-2x)-(5xy)-(-7)\\\\=8-9xy+3x^2-5x-3x^2+2x-5xy+7\\\\=(8+7)+(-9xy-5xy)+(3x^2-3x^2)+(-5x+2x)\\\\=15-14xy+0-3x\\\\=-3x-14xy+15

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I need help on this math question
lina2011 [118]

Answer:

84

Step-by-step explanation:

7 Sizes * 3 Lengths * 4 Colors = 84

4 0
3 years ago
The soccer net in Peter's back yard is 5 1/2 feet high, but only 4 feet wide. Jill's soccer net is also 5 1/2 feet high, but is
Black_prince [1.1K]

The area of Jill's soccer net is 3 times larger than area of Peter's soccer net.

<h3> Area of Peter's soccer net</h3>

The area of Peter's soccer net is determined by using area of rectangle as shown below;

A1 = 5.5 ft x 4 ft

A1 = 22 ft²

<h3> Area of Jill's soccer net</h3>

A2 = 5.5 ft x 12 ft

A2 = 66 ft²

<h3>Ratio of the area of their soccer net</h3>

A2/A1 = 66/22

A2/A1 = 3

Thus, the area of Jill's soccer net is 3 times larger than area of Peter's soccer net.

Learn more about area of rectangle here: brainly.com/question/25292087

4 0
2 years ago
13.<br> Find<br> the<br> volume of a cube with the given !<br> Side:<br> 4cm
avanturin [10]

Answer: the answer is 64 cubed witch is just a a little 3 next to 64.

Step-by-step explanation: the Equation is 4x4x4x is 64cubed do not forget the cubed you will get it wrong if you forge.

3 0
3 years ago
Find the solution of the system of equations. 3x-8y = 19<br>3x + 5y = -46<br>​
sattari [20]

(-7,-5)

Step-by-step explanation:

3x-8y = 19

minus

3x + 5y = -46

0x - 13y = 65

- 13y = 65

÷-13

y = - 5

Substitute y = - 5 into one of the functions:

3x-8y = 19

-8 x - 5 = 40

3x + 40 =19

-40

3x. = - 21

÷3

x= - 7

Solution is (-7,-5)

Hope this helps!

4 0
3 years ago
How many people will get candy?
Sever21 [200]

Answer:

22 people

Step-by-step explanation:

5 0
3 years ago
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