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yaroslaw [1]
2 years ago
9

Solve the system using the linear combination method: x + 5y= -3 2x + 7y=3

Mathematics
1 answer:
valina [46]2 years ago
7 0

Answer:

3x+12y=0

Step-by-step explanation:

x+2x=3x

5y+7y=12y

-3+3=0

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0.5 - (-10.5 • 5) + 40.5 I need the solution to this problem
kondor19780726 [428]
93.5 Great and write answer please brainliest and thanks

7 0
3 years ago
Please HELPppppppppppppppp
aleksandr82 [10.1K]

Answer:

Point of intersections are (0, -7) and (5, -2).

Step-by-step explanation:

From the graph attached,

A straight line is intersecting the circle at the two points (0, 7) and (5, -2).

Now solve algebraically,

Equation of the line → y = x - 7 -------(1)

Equation of the circle → (x - 5)² + (y + 7)² = 25 -------(2)

By substituting the value of y from equation (1) to equation (2)

(x - 5)² + (x - 7 + 7)² = 25

(x - 5)² + x² = 25

x² - 10x + 25 + x² = 25

2x² - 10x = 0

x² - 5x = 0

x(x - 5) = 0

x = 0, 5

From equation (1),

y = 0 - 7 = -7

y = 5 - 7 = -2

Therefore, point of intersections are (0, -7) and (5, -2).

6 0
3 years ago
5 points free, good job
Vilka [71]

Answer:

ok, what's the question?

Step-by-step explanation:

4 0
3 years ago
3x^2(4x^3-2x^2+7x-4)
Lunna [17]

▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄

<h3>>> Given Question :</h3>

3x²(4x³ - 2x² + 7x - 4)

<h3>>> Required Solution :</h3>

12x⁵ - 6x⁴ + 21x³ - 12x²

▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄

6 0
3 years ago
Find the side length of a cube with a volume of 166 m
marin [14]
The answer is 5.5 m.


Cube
Volume = length x width x height

Since the length, width and the height are the same in cube, the formula can be:

Volume = length^3


Let x metres be the side length of the cube.

166 = x^3

x = ∛166

x = 5.495864.....

x = 5.5 (nearest tenth)
8 0
3 years ago
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