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Anton [14]
2 years ago
5

Help with this math show my work

Mathematics
1 answer:
matrenka [14]2 years ago
5 0
(5x + 10) / (x + 2) * (2x) / (4x - 10)

2x(5x + 10) / (x + 2)(4x - 10) =
(10x^2 + 20x) / (4x^2 - 2x - 20) =
(5x^2 + 10x) / (2x^2 - x - 10) =
5x(x + 2) / (2x - 5)(x + 2) =
5x / (2x - 5) <===
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If 1 mile is approximately 1610 meters, which is closest to the number of miles in 10,000
Aleonysh [2.5K]

Answer:

10,000 Miles is 16,100,000 meters. Hope I helped!

Step-by-step explanation:

1610 x 10,000 =

16,100,000

8 0
3 years ago
Read 2 more answers
Find the missing side. Round your answer to the nearest tenth.
Likurg_2 [28]

Answer:

44.8

Step-by-step explanation:

cos α = adjacent leg/hypotenuse

cos 48° = 30/x

x = 30/(cos 48°) = 44.8

4 0
3 years ago
(04.03 MC)
Vlad1618 [11]

Answer:

x = -2 and y = 3

{y = -3 x - 3, y = (3 x)/4 + 9/2} = x = -2 and y = 3

Step-by-step explanation:

Solve the following system:

{6 x + 2 y = -6

3 x - 4 y = -18

Express the system in matrix form:

(6 | 2

3 | -4)(x

y) = (-6

-18)

Solve the system with Cramer's rule:

x = -6 | 2

-18 | -4/6 | 2

3 | -4 and y = 6 | -6

3 | -18/6 | 2

3 | -4

Evaluate the determinant 6 | 2

3 | -4 = -30:

x = -6 | 2

-18 | -4/(-30) and y = 6 | -6

3 | -18/(-30)

Simplify -6 | 2

-18 | -4/(-30):

x = -1/30 -6 | 2

-18 | -4 and y = 6 | -6

3 | -18/(-30)

Simplify 6 | -6

3 | -18/(-30):

x = -(-6 | 2

-18 | -4)/30 and y = -1/30 6 | -6

3 | -18

Evaluate the determinant -6 | 2

-18 | -4 = 60:

x = (-1)/30×60 and y = -(6 | -6

3 | -18)/30

(-1)/30×60 = -2:

x = -2 and y = -(6 | -6

3 | -18)/30

Evaluate the determinant 6 | -6

3 | -18 = -90:

x = -2 and y = (-1)/30×-90

(-1)/30 (-90) = 3:

Answer: x = -2 and y = 3

___________________________________________

Solve the following system:

{y = -3 x - 3

y = (3 x)/4 + 9/2

Express the system in standard form:

{3 x + y = -3

-(3 x)/4 + y = 9/2

Express the system in matrix form:

(3 | 1

-3/4 | 1)(x

y) = (-3

9/2)

Write the system in augmented matrix form and use Gaussian elimination:

(3 | 1 | -3

-3/4 | 1 | 9/2)

Add 1/4 × (row 1) to row 2:

(3 | 1 | -3

0 | 5/4 | 15/4)

Multiply row 2 by 4/5:

(3 | 1 | -3

0 | 1 | 3)

Subtract row 2 from row 1:

(3 | 0 | -6

0 | 1 | 3)

Divide row 1 by 3:

(1 | 0 | -2

0 | 1 | 3)

Collect results:

Answer:  {x = -2 , y = 3

5 0
2 years ago
Starting from the same place, Miranda walks due west and Blake walks due east.
garri49 [273]
Going by 30 for east and -30 for west
3 0
3 years ago
Write the number 0.5 in the form mc003-1.jpg, using integers, to show that it is a rational number.
Tasya [4]
If x=0.5, then 10x=5, and so x=\dfrac5{10}=\dfrac5{5\times2}=\dfrac12.
6 0
3 years ago
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