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Marizza181 [45]
3 years ago
5

What number can you multiply ONE equation by in the following system to obtain a matching

Mathematics
1 answer:
LenaWriter [7]3 years ago
7 0

Answer:

Multiply the second equation by 2

Step-by-step explanation:

Given

4x + 3y = 8

2x + 5y =12

Required

Get matching coefficient for elimination

4x + 3y = 8

2x + 5y =12

The coefficient of x in both expressions are factors.

So, we can multiply the second equation by 2 to get the coefficient of x in the first.

i.e.

2 * (2x + 5y = 12)

4x + 10y = 24

So, the system becomes:

4x + 3y = 8

4x + 10y = 24

<em>Now, x can be eliminated</em>

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I'm not sure what this means, please help me I'll give you 10 points ;)
Karo-lina-s [1.5K]

<u>Answer:</u>

So all the possible solutions are:

  • \bold{523,~400,~379~and,~378.6}

<u />

<u>Solution Steps:</u>

<em>First you need to solve the real inequality to understand how to find the rest of the possible equations. </em>

<u>Add 78 to both sides:</u>

  • <u />78+78= Cancels Out
  • 300+78=378

<em>So now we know the real answer, but it ask for all possible answers. </em>

(Means anything larger than 300 when you plug it into x - 78 > 300.)

<u>Numbers that are greater than 378:</u>

  1.)  377-78=299 > 300  (False)

  2.)  523-78=445>300  (True)

  3.)  0-78=-78>300  (False)

  4.)  -62-78=-140>300  (False)

  5.)  400-78=322>300  (True)

  6.)  379-78=301>300  (True)

  7.)  222-78=144>300  (False)

  8.)  378.6-78=300.6>300 (True)

______________________________

 \bold{Hope~this~helps!}\\\bold{If~you~need~help~with~anything~else,~feel~free~to~ask!}\\\\\bold{~~~~~-TotallyNotTrillex}

5 0
3 years ago
X+4/8 = 1/2
Nina [5.8K]

Answer:

x=0

Step-by-step explanation:

4/8=1/2, so:

x+1/2=1/2

x=0

5 0
3 years ago
Read 2 more answers
You made two deposits to your bank account this month. One deposit was $17.92, and the second deposit was $15.33. Your balance a
stiks02 [169]

X+17.92+15.33=72.31

                        -17.92

                        -15.33

x= 39.06

The amount you started with was $39.06.

Hope this helps ;}

6 0
3 years ago
Read 2 more answers
13, 5, 4, 9, 7, 14, 4 The deviations are _____.
fenix001 [56]

Answer:

B."5, -3, -4, 1, -1, 6, -4"

Step-by-step explanation:

We are given that

13,5,4,9,7,14,4

We have to find the deviation.

Mean=\frac{sum\;of\;data}{total\;number\;of\;data}

Using the formula

Mean,\mu=\frac{13+5+4+9+7+14+4}{7}

Mean,\mu=\frac{56}{7}=8

Deviation=x_i-\mu

         x_i-\mu

13          5

5           -3

4           - 4

9            1

7             -1

14            6

4            - 4

Hence, option  B is correct.

7 0
3 years ago
It took 35 seconds for 5 songs to download to Rebecca’s computer. The next day, it took 42 seconds for 6 songs to download. Writ
sleet_krkn [62]

The equation in point-slope form to represent the time y it took to download x songs is; (y - 35) = 7(x - 5)

  • Since it took 35 seconds for 5 songs to download

  • and it took 42 seconds for 6 songs to download

In essence, we can represent the information as;

  • (5, 35) and (6,42)

To find the slope of the equation; we have;

  • Slope, m = (42-35)/(6-5)

  • m = 7

In essence, the equation in point-slope form to represent the time y it took to download x songs is;

  • (y - 35) = 7(x - 5)

Read more:

brainly.com/question/6497976

3 0
3 years ago
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