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grigory [225]
3 years ago
15

Write the product in its simplest form: 7xy3 . (-9xy)

Mathematics
1 answer:
Naddik [55]3 years ago
3 0
The answer would be
-63x^2y^3
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Heeelpppppppppppppppppppppppppppppppp
Vinil7 [7]

Answer:

1,512

Step-by-step explanation:

I got you ok so, you just multiply all the numbers. and when there is that much numbers you are gonna be in the a thousands. use a calculator easy!

3 0
3 years ago
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Where was a error made in combining and solving the equation below?
Lera25 [3.4K]
It should be a positive 5 not a negative so the error was made at the end because u divide
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3 years ago
The high school leadership team is having a car wash. They charge $5.50 for large cars and $4.00 for small cars . They had a suc
11Alexandr11 [23.1K]

Answer: 56 large cars and 86 small cars.

Step-by-step explanation:

Let's call:

l: the number of large cars.

s: the number of small cars.

Then, you can set up the following system of equations:

\left \{ {{l+s=142} \atop {5.50l+4.0s=652.50}} \right.

You can use the Elimination Method:

- Multiply the first equation by -4.0

- Add both equations.

- Solve for l.

\left \{ {{-4.0l-4.0s=-568} \atop {5.50l+4.0s=652.50}} \right.\\--------\\1.5l=84.5

l≈56

Substitute l=56 into one of the original equations and solve for <em>s:</em>

<em> </em>56+s=142\\s=142-56\\s=86

3 0
3 years ago
Given: The coordinates of isosceles trapezoid JKLM are J(-b, c), K(b, c), L(a, 0), and M(-a, 0). Prove: The diagonals of an isos
In-s [12.5K]
We have to find the lengths of the diagonals KM and JL:
d ( KM ) = √ (( - a - b )² + ( 0 - c )²) = √ (( a + b )² + c² )
d ( JL ) = √ ( ( a - ( - b ) )² + ( 0 - c )²) = √ ( ( a + b )² + c² )
So the lengths of the diagonals KM and JL are congruent.
The lengths of the diagonals of the isosceles trapezoid are congruent.   
6 0
3 years ago
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What is -3(x-8)+7x=12​
algol13

Answer:

18/5

Step-by-step explanation:

7 0
3 years ago
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