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3 years ago

How to work out 0.4x+2.9=1.5 plz show work

2 answers:

8 0

Move consant to the right side and change it sign
0.4x=1.5 -2.9

Calculate the difference
0.4x= -1.4

Divide both sides of the equiation by 0.4

X=-3.5

Nataly [62]3 years ago

5 0

Answer:

x = -3.5

Step-by-step explanation:

Simplifying

0.4x + 2.9 = 1.5

Reorder the terms:

2.9 + 0.4x = 1.5

Solving

2.9 + 0.4x = 1.5

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-2.9' to each side of the equation.

2.9 + -2.9 + 0.4x = 1.5 + -2.9

Combine like terms: 2.9 + -2.9 = 0.0

0.0 + 0.4x = 1.5 + -2.9

0.4x = 1.5 + -2.9

Combine like terms: 1.5 + -2.9 = -1.4

0.4x = -1.4

Divide each side by '0.4'.

x = -3.5

Simplifying

x = -3.5

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Step-by-step explanation:

The area of a rectangle is calculated using the following formula.

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In this case we know that the length of the rectangle is 5 inches greater than its width. This means that:

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In this case note that:

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Then:

$x=\frac{-5\±\sqrt{(5)^2-4(1)(-300)}}{2(1)}$

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