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3 years ago

An expression is shown 30×8×103 P.s the three is in top of the 10 What is the value of the expression

Mathematics

1 answer:

lesya692 [45]3 years ago

8 0

Answer: 2.4×10^5

Step-by-step explanation:

30×8×10^3

First multiply and forget about ×10^3 for now:

30×8 = 240

Then add back the ×10^3:

240×10^3

Then simplify:

2.4×10^5

To check the answer:

30×8×10³=

30×8000= 240000

Then simplify:

240000 = 2.4 ×10⁵

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First, we are going to find the common ratio of our geometric sequence using the formula: $r= \frac{a_{n}}{a_{n-1}}$ . For our sequence, we can infer that $a_{n}=-20$ and $a_{n-1}=4$ . So lets replace those values in our formula:
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Now that we have the common ratio, lets find the explicit formula of our sequence. To do that we are going to use the formula: $a_{n}=a_{1}*r^{n-1}$ . We know that $a_{1}=4$ ; we also know for our previous calculation that $r=-5$ . So lets replace those values in our formula:
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An expression is shown 30×8×103 P.s the three is in top of the 10 What is the value of the expression ​

An expression is shown 30×8×103 P.s the three is in top of the 10 What is the value of the expression