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Paha777 [63]
3 years ago
8

How to slove substitutions

Mathematics
1 answer:
Mkey [24]3 years ago
3 0
If you mean this in the terms of system of equations, then the answer is pretty long!
When you have two equations with two variables that are the same(say x + y = 14 and 6x + 3y = 42) then substitution is one method to figure out the answer to what x and y are. The first step is to isolate one variable of one equation, which is of your choosing. For example, I might want to isolate y in the first equation. To do this, I would subtract x from both sides of equation one to get y = 14 - x. Next, you would want to plug in your new equation to the original form of equation two. So, in 6x + 3y = 42, I would change the equation to be 6x + 3(14 - x) = 42. From there, you would carry on the solve that equation like a normal, one variable equation (distributing the three, subtracting 3x from 6x, etc...)
When you get your answer for x, plug it in to one equation to get the answer for y. 
Hope this helped!
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Step-by-step explanation:

This is a reflection. A reflection is a transformation involving two shapes looking the same by "bouncing it off a line without coming back.( meaning a reflection goes some where else not to it original poistion.)

Others reason why Why?

Line m is perpendicular to Line c.

B and E are equidistant from c that BC=CE.

Why the others are wrong.

While you could rotate this triangle 180 degrees, the transformation occurs about a line not a point. So using a rotation is wrong.

A translation doesnt occur about a line.

A guide reflection doesnt work since the transformations are already mapped correctly if you do the reflection. It doesnt need a translation.

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3 years ago
What is 10 to the power of 10
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Is 10000000000, 10 to the power of 10
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4 years ago
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Answer:

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3 years ago
A group of 18 people ordered soup and sandwiches for lunch. Each person in the group had either one soup or one sandwich. The sa
Minchanka [31]
Lets do this:-

A. 7 Sandwiches

18 - 7 = 11

7 × $7.75 =  $54.25
7 sandwiches cost $54.25.

11 × $4.50 = $49.50
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49.50 + 54.25 = 103.75
A is not d answer cuz d total of d lunches came to $113.50. 

B. 8 sandwiches

18 - 8 = 10

8 × $7.75 =  $62
8 sandwiches cost $62.

10 × $4.50 = 45
8 soups costs $45

62 + 45 = 107

B is not d answer cuz d total of d lunches came to $113.50. 

C. 9 Sandwiches.

18 - 9 =  9

9 × $7.75 = 69.75
9 sandwiches cost $69.

9 × $4.50 = 40.50
9 soups costs $40.50

69 + 40.50 = 109.5

C is not d answer cuz d total of d lunches came to $113.50. 

D. 10 Sandwiches

18 - 10 = 8

10 × $7.75 = $77.75
10 sandwiches cost $77.75.

8 × $4.50 = $36
8 soups costs $36.

77.75 + 36 = <span>113.75

</span>D is not d answer cuz d total of d lunches came to $113.50. 

So, based on your answer choices there is no correct choice. <span />
7 0
3 years ago
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