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erma4kov [3.2K]

3 years ago

14

Solution to the compound inequality –6 ≤ 2 + 6 ≤ 6 -12≤x≤0 6≤x≤6 -6≤x≤0 0≤x≤6

1 answer:

Ket [755]3 years ago

5 0

-6 < = 2x + 6 < = 6....subtract 6 from all sections
-6 - 6 < = 2x + 6 - 6 < = 6 - 6...simplify
-12 < = 2x < = 0...divide all sections by 2
-12/2 < = (2/2)x < = 0/2....simplify
-6 < = x < = 0...by the way, I cant put the line under the inequality sign to show the equal sign...so I just put the = sign with the inequality sign

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Find the point of intersection algebraically for the system of equations. Make sure to write your answer as an ordered pair.

Vsevolod [243]

Answer:

Step-by-step explanation:

hello :

1) the system is : y=5x+4

y = 2x+1

so :5x+4 =2x+1

5x-2x=1-4

3x= -3 so : x= -1 but y =2x+1 put x=-1 you have : y =-1

the solution : (x,y) =( -1, -1)

2) the system is : x + y = 4

4x -y = 1

means : y = - x+4 (line red)

y= 4x-1 (line blue)

graficly : intrsection is : (x,y) =(1 ,3 )

4 0

3 years ago

The area of a wetland drops by 1/4 every 8 years. What percent of its total area disappears after 40 years?

valentina_108 [34]

40÷8=5
5 × 0.25
= 1 1/2 % lost

8 0

3 years ago

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IgorC [24]

Answer:

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Step-by-step explanation:

5 0

3 years ago

5x + 2y=7<br> - 2x + 6y=9

ollegr [7]

Answer:

x = $\frac{12}{17}$ or 0.706

$y = \frac{59}{34}$ or 1.735

Step-by-step explanation:

5x + 2y=7 ----->(eq 1)

- 2x + 6y=9 ----->(eq 2)

Multiply (eq 1) with 3

3×(5x + 2y) = 3×7

15x + 6y = 21 ----->(eq 3)

substract (eq 3) from (eq 2)

- 2x + 6y - (15x + 6y) = 9-21

- 2x + 6y - 15x - 6y = 9-21

- 2x - 15x + 6y - 6y = 9-21

-17x = -12

x = -12 ÷ -17

x = $\frac{12}{17}$

put x = $\frac{12}{17}$ in (eq 1)

$5*\frac{12}{17} + 2y = 7$

$2y = 7- 5*\frac{12}{17}$

$2y = \frac{7*17 - 60}{17}$

$2y = \frac{119- 60}{17}$

$2y = \frac{59}{17}$

$y = \frac{59}{17*2}$

$y = \frac{59}{34}$

6 0

3 years ago

-4<br>1.3 x 10 x 1.7 x 10<br>-3<br>x 10<br>Q2<br>[2]<br>Ed<br>9.

Len [333]

Answer:

221

Step-by-step explanation:

use bidmas (brackets,indices, division,multiplication,addition,substraction)

3 0

3 years ago