Algebra 2(8x2-7)+(8-8x2)

Mathematics

2 answers:

Katarina [22]3 years ago

6 0

The answer is just 1 l, just didn’t on the top of my head.

Leviafan [203]3 years ago

5 0

Remember to use the PEMDAS order of operations which states that you need to do the following in the order posted...

Parenthesis
Exponents
Multiplication and Division
Addition and Subtraction

All from the left to right.

So 8x2=16-7=9
Then
8x2=16....8-16=-8

9+-8=1

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Find the common ratio of the geometric sequence 13,39,117

Anna [14]

r = 39/13 = 3

check

117 /39 = 3

true

so r=3

7 0

4 years ago

Can someone explain scientific notation to me? And also another question. Is 9.725 x 10^6 a scientific notation? What about 9.72

ELEN [110]

Both of those values are in scientific notation

Scientific notation is when we have numbers of the form $a \times 10^b$ where $0 \le a < 10$ and b is an integer.

Both 9.725 and 9.7250 are inside the inequality mentioned above.

Scientific notation is used to help describe very large numbers, or very small numbers, depending on context.

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If you wanted to convert from scientific notation to standard notation, then you'll move the decimal point based on what the exponent is. The positive 6 means we move the decimal point 6 places to the right.

We go from 9.725 to 9,725,000 which is about 9.7 million

In other words, $9.725 \times 10^6 = 9,725,000$

As another example, $1.23 \times 10^{11} = 123,000,000,000 = \text{123 billion}$ since we start at 1.23 and move the decimal point 11 spots to the right to arrive at 123,000,000 aka 123 billion.