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2 years ago

-2 = 0.8n I need help with this ..

Mathematics

1 answer:

Alik [6]2 years ago

3 0

Step-by-step explanation:

I guess you want to solve for n.

in that case

-2 = 0.8n

n = -2/0.8 = -2 / 8/10 = -2 × 10/8 = -5/2 = -2.5

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2 years ago

Add.

Sidana [21]

Answer:

1 $\frac{7}{20}$

Step-by-step explanation:

1. Convert the mixed number to an improper fraction to match the rest of the problem (this just makes it easier for now, the answer will still be a mixed number)

-1 $\frac{4}{5}$ becomes $\frac{9}{5}$

2. Re-write the new equation. When there is a "+" in front of a set of parentheses the expression doesn't change aside from removing the plus signs.

The new equation becomes

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2 years ago

Acellus

Shalnov [3]

Answer:

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Step-by-step explanation:

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6 0

3 years ago

What equation represents the model shown below?

g100num [7]

Given:

The algebra tiles of an equation.

To find:

The equation represented by the given model.

Solution:

On the left side of the model we have 4 tiles of (-x) and 3 tiles of (-1). So,

$LHS=(-x)+(-x)+(-x)+(-x)+(-1)+(-1)+(-1)$

$LHS=-4x+(-3)$

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On the right side of the model we have 8 tiles of (-1). So,

$RHS=(-1)+(-1)+(-1)+(-1)+(-1)+(-1)+(-1)+(-1)$

$RHS=-8$

Now, equate the LHS and RHS to get the equation.

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Therefore, the equation for the given model is $-4x-3=-8$ .

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2 years ago