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irinina [24]
2 years ago
11

Use substitution to solve the system. x = 2y-14 2x-3y = –23

Mathematics
2 answers:
Katen [24]2 years ago
7 0

Answer:

x=-4 y=5

Step-by-step explanation:

mr_godi [17]2 years ago
3 0

Answer:

(-4,5)

Step-by-step explanation:

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The height of a house is 39.2 ft, a doll house replica is 2.8 ft. What is the scale<br> factor?
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I might be wrong cause I don’t removed this from 4 years ago but it should be 36.4 also plz mark brainlyiest
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2 years ago
Please help! I do not understand!
Sergio [31]
Your answer would be approximately 254.5 if you round since 9^2 times pie you would get such
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3 years ago
Find the equation of the line passing through the given points. Express the equation in standard form.
Artyom0805 [142]

We want to write the equation of the line passing through these two points in standard form.

First, we are going to do this in slope intercept form and then change the form to standard form, which is Ax + By = C

We will use the equation y = mx + b, and since we are given two points on the line we are going to determine the slope of the line by determining the  change in the y coordinates

m = y sub2  - y sub1 divided by the change in the X coordinates  x sub2 – x sub1              

We will start by determining the slope

(1, -6) the 1 is x sub 1  and the 6 is y sub 1

(-7, 2) the -7 is x sub 2 and the 2 is y sub 2

2 - (-6) = 8

-7 -1 = -8

so equation now is m = -1

So now again referring back to the slope intercept of the line we now know y = -1 + b.  We still have to determine b and the y intercept, and we can do this by using one of the given points and substituting in the value for y and x, and then solve for b.  Since these points are on the line, they must satisfy this equation.  If we use the first coordinates, we would substitute 1 for x and -6 for y.  

-6 =  -1 times x, which is 1 + b

b = -5

construct the line equation y = mx + b where m = -1 & b = -5

In slope intercept form the equation would be y = -x - 5

Now we want to write this in standard form now.  We have to deal with two things.  The x and y terms have to be on the left side and A and B and C have to be integers.  

The standard form of a linear equation is Ax + By=CA x + By = C .   Move all terms containing variables to the left side of the equation.

Add x to both sides of the equation.

y + x = -5

Reorder y & x

x + y = -5

3 0
3 years ago
Help please. 10 points to who help me​
Lelechka [254]

9514 1404 393

Answer:

  64/109 ≈ 0.5872

Step-by-step explanation:

41 + 23 = 64 of the events have outcome E.

An additional 35 + 10 = 45 do not.

The probability of an outcome of E is 64 out of a total of 64+45 = 109 events.

  P(E) = 64/109 ≈ 0.5872

4 0
2 years ago
How to solve this equation for the variable b a^2+b^2=c^2 ?
Nata [24]

Firstly, subtract a^2 on both sides: b^2=c^2-a^2

Next, we are going to be using the difference of squares, which is x^2-y^2=(x+y)(x-y) . Use this on the right side of the equation: b^2=(c+a)(c-a)

Lastly, square root both sides of the equation, and <u>your answer will be b=\sqrt{(c+a)(c-a)}</u>

5 0
2 years ago
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