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2 years ago

How do you solve this step by step?

Mathematics

2 answers:

nikklg [1K]2 years ago

7 0

Answer:

-2/9

Step-by-step explanation:

first you are going to distrubute 2/5, so 2/5 times x is 2/5x and 2/5 times -2 is -4/5

next you set up the problem with those two answers which gives you:

2/5x - 4/5 = 4x

then multiply both sides of the equation by 5: 2x-4=20x

next move the constant to the right side and chnage the sign: 2x=20x+4

then combine like terms: -18x=4

after that divide both sides of the equation by -18: -2/9

so x= -2/9

igor_vitrenko [27]2 years ago

5 0

Answer:

x = -2/9

Step-by-step explanation:

2/5 (x - 2) = 4x

2/5x - 4/5 = 4x

2/5x - 4x = 4/5

2/5x - 20/5x = 4/5

- 18/5x = 4/5

- x = 4/5 / 18/5

- x = 4/5 * 5/18

- x = 4/18

x = - 4/18

x = - 2/9

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Juanita begins to factor an expression as shown. x2 3x−18=(x )(x−) what numbers should be placed in the boxes from left to right

Ivan

The numbers which should be placed in the boxes from left to right, when Juanita factor the expression, is 6 and 3 respectively.

<h3>What is a factor of polynomial?</h3>

The factor of a polynomial is the terms in linear form, which are, when multiplied together, give the original polynomial equation as a result.

Juanita begins to factor an expression as shown.

$x^2+ 3x-18=(x+ \;\;)(x-\;\;)$

To find the value of blank, we have to factor the left-hand side expression using the split the middle term method as,

$x^2+ 3x-18\\x^2+ 6x-3x-18\\x(x+6)-3(x+6)\\(x+6)(x-3)$

Hence, the numbers which should be placed in the boxes from left to right, when Juanita factor the expression is 6 and 3 respectively.

Learn more about factor of polynomial here;

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7 0

2 years ago

One day the temperature was 72°F. That night, the temperature was 44°F. What number represents the change in temperature?A. 22°F

soldier1979 [14.2K]

Answer:

-28*F, hope this helps!

7 0

3 years ago

Read 2 more answers

Helpppppppp? please thank you

Snezhnost [94]

The x values are the same for both green dots, so you are looking at a simplified version of the distance formula.

d = sqrt( (x2 - x1)^2 + (y2 - y1)^2 )

Since x1 = x2 = 5, the first set of brackets = (5 - 5) = 0

d = sqrt( y2 - y1)^2 )

d = y2 - y1

y2 = 5

y1 = - 1

d = 5 - - 1

d = 6 Answer

8 0

3 years ago

Read 2 more answers

What is the solution to the system of equations? Use the substitution method. {y=−2x+53x−4y=2

klio [65]

$y = - 2x + 53x - 4y = 2 \\ y = 51x - 4y = 2 \\ > y = 51 x - 4y \\ > 51x - 4y = 2$
$y = 51x - 4y \\ 5y = 51x \\ y = \frac{51}{5} x$
Substitute 51/5x into
$51x - 4( \frac{51}{5} x) = 2 \\ 51x - 40.8x = 2 \\ 10.2x = 2 \\ x = 2 \times \frac{10}{102} \\ x = \frac{10}{51} \: aka \: 0.196$
Substitute that into
$y = \frac{51}{5} \times \frac{10}{51} \\ y = 2$
Hope this helps. Answer should be correct. Unless your quadratic equation is wrongly stated.

8 0

2 years ago

Please help asapp it's for a test

xenn [34]

This is what I found, I hope it helps! Good luck with your test

8 0

3 years ago