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2 years ago

Can someone help me with these questions please?! -1.2x = 12 and x/9 = 4

Mathematics

1 answer:

Elza [17]2 years ago

8 0

Answer:

Step-by-step explanation:

-1.2x=12 divide both sides by -1.2 to get x alone

x= 10

x/9=4 multiply both sides by 9

x=36

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2 years ago

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labwork [276]

Given:

Five and one half of 2 and one third.

To find:

The number for the given statement.

Solution:

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The given statement is five and one half of 2 and one third.

Here, the word "of" is used for multiplication.

So, the expression for the given statement is:

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2 years ago

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ivanzaharov [21]

The sequence forms a Geometric sequence as the rule to obtain the value for the next term is by ratio

Term 1: 1000
Term 2: 200
Term 3: 40

From term 1 to term 2, there's a decrease by $\frac{1}{5}$
From term 2 to term 3, there's a decrease also by $\frac{1}{5}$

The rule to find the $n^{th}$ term in a sequence is
$n^{th}=a r^{n-1}$ , where $a$ is the first term in the sequence and $r$ is the ratio

So, the formula for the sequence in question is
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The sequence is a divergent one. We can always find the value of the next term by dividing the previous term by 5 and if we do that, the value of the next term will get closer to 'zero' but never actually equal to zero.

We can find a partial sum of the sequence using the formula
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Substituting $a=1000$ and $r= \frac{1}{5}$ we have
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