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schepotkina [342]
2 years ago
10

Solve the equation by elimination 2x - 5y = -7 = -2x + 3y = 1

Mathematics
1 answer:
seropon [69]2 years ago
5 0

Answer:

Step-by-step explanation:

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4x+3y=20<br> 2x+y=7<br> How do I solve this? I forgot how to do it :/ also no answer choice
Crank

So for this, I will be using the substitution method. Firstly, subtract both sides in the second equation by 2x: 4x+3y=20\\ y=7-2x

Next, substitute y in the first equation with 7-2x, then solve for x from there:

4x+3(7-2x)=20\\ 4x+21-6x=20\\ -2x+21=20\\ -2x=-1\\ x=\frac{1}{2}

Now that we got x, substitute it into either equation to solve for y:

4*\frac{1}{2}+3y=20\\ 2+3y=20\\ 3y=18\\ y=6\\ \\ 2*\frac{1}{2}+y=7\\ 1+y=7\\ y=6

In short, x = 1/2 and y = 6.

6 0
3 years ago
The eccentricity of the conic section
NeX [460]

The eccentricity of the conic section that is graphed is C. One.

<h3>What is eccentricity?</h3>

It should be noted that the eccentricity of the clinic section simply means the distance from the point to its focus.

In this case, the eccentricity of the conic section that is graphed is one. The eccentricity value is usually constant for any conics.

Learn more about graphs on:

brainly.com/question/19040584

#SPJ1

5 0
2 years ago
Calcula el 23 % de 175
weqwewe [10]

Answer:40.25

Step-by-step explanation:

23% of 175

23/100 x 175

(23 x 175)/100

4025/100=40.25

5 0
3 years ago
Plz helpppppppppppppppppppppppppppppppppppppppppppppppppppppp
BigorU [14]
D is the answer . . .
8 0
3 years ago
Read 2 more answers
the perimeter of this quarter circle with radius, r = 32mm. Give your answer as an expression in terms of π.
djverab [1.8K]

Answer:

16π + 64

Step-by-step explanation:

So the whole circumference is 64π

A quarter is 16π

Then you just have to account for the two radii.

16π + 64

3 0
3 years ago
Read 2 more answers
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