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NeX [460]
2 years ago
7

5(x−3.8)=22 please help find the x value

Mathematics
2 answers:
Kay [80]2 years ago
5 0

Answer:

x = 8.2

Step-by-step explanation:

dedylja [7]2 years ago
3 0

Answer:

the value of x is 8.2

Step-by-step explanation:

5(x−3.8)=22

expand LHS

5x - 19 = 22

5x = 22 + 19

5x = 41

divide both side by 5

x = 41/5

x = 8.2

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Ede4ka [16]

The roots of the quadratic equation ax^2+bx+c=0 are

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Here the given quadratic equation is 5x^2-13x+7=0. Here a=5,b=-13,c=7.

The roots are

x=\frac{13 \pm \sqrt{13^2-4*5*7}}{2*5} \\ x=\frac{13 \pm \sqrt{29}}{10}

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3 years ago
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Vinvika [58]

Answer:

7.28 units

Step-by-step explanation:

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7 0
3 years ago
Solve the linear system using substitution
levacccp [35]
Hello there!

3x - y = 3
-x + y = 3

We need to solve 3x - y = 3 for y

Let start by adding -3x to both sides

3x - y = 3

3x - 3x - y = 3 - 3x

-y = 3 - 3x
We cannot leave the variable with a negative sign. We must multiply both sides by -1

-y * -1= (3 - 3x)-1

y = 3x - 3

Substitute 3x -3 for y in -x+y=3

-x + y = 3

-x + 3x - 3 = 3

2x - 3 = 3

2x = 3 + 3

2x = 6

x = 6/2

x = 3

Now substitute 3 for x in y=3x -3

y = 3x - 3

y = 3(3) - 3

y= 9 - 3

y= 6

Thus,

The answer is x=3 and y=6

It is always my pleasure to help students like you :)

As always, I am here to help!


7 0
3 years ago
Which of the following linear equations represents the data chart?
BlackZzzverrR [31]

Answer: y = -x + 7

Step-by-step explanation:

The slope is \frac{5-6}{2-1}=-1, so we know the equation is of the form y=-x+b.

Substituting in the coordinates (1,6) to find b,

6=-1+b\\\\b=7

Thus, the equation is y = -x + 7

4 0
2 years ago
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