Ask question

Ask question

All categories

anzhelika [568]

3 years ago

5

When would you use substitution instead of graphing to solve a system of equations?

2 answers:

Ivan3 years ago

5 0

Answer:when x is isolated in the first equation or when a equation is solved for the variable.

Step-by-step explanation:

Shalnov [3]3 years ago

5 0

So there are a few different reasons but mostly it’s just to get used to different methods such as elimination, substitution and graphing. All have their ups and down but it is very dependent on the problem and the directions you’re given. If you need help with any of the methods just let me know!

You might be interested in

<img src="https://tex.z-dn.net/?f=%5Cfrac%7B3%7D%7B4%7D%28m%2Bn%29-%5Cfrac%7B1%7D%7B4%7D%28m-n%29%3Bm%3D%5Cfrac%7B1%7D%7B2%7D%2C

Lera25 [3.4K]

Answer:

$\frac{3}{4}(m+n)-\frac{1}{4}(m-n) = \frac{14}{24}$

Step-by-step explanation:

Given

$\frac{3}{4}(m+n)-\frac{1}{4}(m-n);m=\frac{1}{2},n=\frac{1}{3}$

Required

Solve

To do this, we simply substitute values of m and n in the given expression

$\frac{3}{4}(\frac{1}{2}+\frac{1}{3})-\frac{1}{4}(\frac{1}{2}-\frac{1}{3})$

Evaluate the brackets

$\frac{3}{4}(\frac{3 + 2}{6})-\frac{1}{4}(\frac{3-2}{6})$

$\frac{3}{4}(\frac{5}{6})-\frac{1}{4}(\frac{1}{6})$

Open Brackets

$\frac{15}{24} - \frac{1}{24}$

Take LCM

$\frac{15 - 1}{24}$

$\frac{14}{24}$

Hence:

$\frac{3}{4}(m+n)-\frac{1}{4}(m-n) = \frac{14}{24}$

8 0

4 years ago

Someone please help me

const2013 [10]

Answer:

40

Step-by-step explanation:

Quadrilateral QRSU forms a euclidean kite this means PR would be 2(mST)

6 0

3 years ago

(1A) At a movie theatre, the child ticket price is

marta [7]

Answer:I am pretty sure it is B obv that is the only one that makes enough sense (x+3.50)x65 (x)41 and the only one that makes sense to me is B!

Step-by-step explanation:

8 0

3 years ago

6 times the sum of 12 and 8

IgorLugansk [536]

6 times the sum of 12 and 8 =
6(12 + 8) =
6(20) =
120

The answer of the problem is 120.

7 0

3 years ago

Read 2 more answers

Find the inverse of the function f(x) = 2x – 4.

kogti [31]

First make x the subject of the relation:-

f(x) = 2x - 4

2x = f(x) + 4

x = (f(x) + 4) / 2

Now replace x by the inverse f-1(x) and f(x) by x :-

f-1(x) = (x + 4) / 2

8 0

4 years ago

Read 2 more answers