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Viefleur [7K]
3 years ago
15

I only need the answer to question B

Mathematics
1 answer:
nalin [4]3 years ago
3 0

Answer:

x=5

y=1

Step-by-step explanation:

The substitution method is considered easier because of its simplification.

2x-3y=7 (1)

x+2y=7 (2)

considering equation (2),

x = 7 - 2y (3)

using the value of "x" in (1)

2 (7-2y) - 3y=7

14 - 4y- 3y = 7

14 - 7y = 7

7y = 14 - 7

7y = 7

y = 1 (4)

substituting this value of "y" in (3)

x = 7- 2(1)

x = 5

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Enter the coordinates of the vertex of the graph of y=2(x+5)^2
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Step-by-step explanation:

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2 years ago
A rectangular football field is 64 meters wide and 100 meters long. A player runs from one corner of the firmed in a diagonal li
Lynna [10]

Answer:

The player ran approximately 119119119 meters

Step-by-step explanation:

We can use the Pythagorean Theorem to find the length of the diagonal line.

The equation for the Pythagorean Theorem is

a^2 + b^2 = c^2a  

2

+b  

2

=c  

2

a, squared, plus, b, squared, equals, c, squared

where aaa and bbb are the lengths of the two legs of the triangle, and ccc is the length of the hypotenuse.

In this case a=64,b=100,a=64,b=100,a, equals, 64, comma, b, equals, 100, comma and c=xc=xc, equals, x.

Hint #33 / 4

\begin{aligned} 64^2+100^2 & =x^2\\ 4096+10000 & = x^2\\ 14096 & = x^2\\ \sqrt{14096} & = x\\ 118.726 & \approx x \end{aligned}  

64  

2

+100  

2

 

4096+10000

14096

14096

​  

 

118.726

​  

 

=x  

2

 

=x  

2

 

=x  

2

 

=x

≈x

​

The player ran approximately 119119119 meters.

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3 years ago
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