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ElenaW [278]
3 years ago
7

2x – 3y = 17 –3x + y = –1 solve by elimination

Mathematics
1 answer:
Ad libitum [116K]3 years ago
6 0

Answer:

(-2,-7)

alternatively

x: -2

y: -7

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Which property is illustrated by the following?<br><br> If 2(x+y)=z, then 2x+2y=z
I am Lyosha [343]
Bracket expansion or simplifying
3 0
3 years ago
Item 3
Sonja [21]

Answer:

0 to 900

Step-by-step explanation:

The three ordered pairs, (0, 250), (5, 575), and (10, 900) for the equation,

y = 65x + 250

imply that the y-axis should range from 0 to 900. The y-values from the ordered pairs are; 250, 575 and 900

4 0
3 years ago
Given a rectangle with an area of 20 square units, if the width is x units and the length is x + 1 units, what is the difference
ollegr [7]

Answer: 1unit.

Step-by-step explanation:

Area of the rectangle

A = length × width

Since the area = 20 and the width is x and the length is x + 1.

We now substitute for the values in the above formula and solve for x

20 = x × x + 1

20 = x( x + 1 ), we now open

20 = x² + x , then re arrange.

x² + x - 20 = 0, this is a quadratic equation.we solve for x using quadratic means

Here, I am going to solve using factorization by grouping

x² + x - 20 = 0

x² + 5x - 4x - 20 = 0

x( x + 5 ) - 4( x + 5 ) = 0

( x + 5 )( x - 4 ). = 0

Therefore, the solution for x will be

x = -5 or 4, but x can not be -5 ( negative), so x = 4.

Now the difference between width and the length can easily be calculated from the above,

Width = 4 (x) , and length = 5 (4 + 1),

Now difference will be

5 - 4 = 1unit.

5 0
3 years ago
I need help with this question ASAP
IgorLugansk [536]

Answer:

The answer would be 49 I think hehe

Step-by-step explanation:

7 0
3 years ago
The perimeter of a rectangle is 68 ft. Find the dimensions of the rectangle if the ratio of the length to the width is 9 : 8. Wh
Kipish [7]
I think the best answer is d since 18x + 16x
7 0
3 years ago
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