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NeX [460]
3 years ago
7

Describe the relationship between the number of places a decimal point is moved to the left and the change in the value of the n

umber.Please answer today.
Mathematics
1 answer:
dimaraw [331]3 years ago
3 0
For every decimal place you move a decimal through a number you can think of it as multiplying or dividing by ten. 

take for example 1000.0 
if you move the decimal to make this number 100.00 you divided it by ten 
if you move the decimal again to make 10.000 you divided ten again

but, if you make the number bigger, say 10000. then you have multiplyed by ten. 
You might be interested in
How do I write 8.21 as a mixed number
Rom4ik [11]
8 21/100
 Hope this helped :)
5 0
3 years ago
Help please thank you
lara31 [8.8K]

One of the rules of logarithms is as follows;

\begin{gathered} \log _ab=x \\ Is\text{ equivalent to,} \\ a^x=b \end{gathered}

We can now insert the corresponding values in the question provided, as shown below;

\begin{gathered} \log _2\frac{1}{16}=-4 \\ \text{This is equivalent to,} \\ 2^{-4}=\frac{1}{16} \end{gathered}

Note that, one of the rules of exponents, states that a number when raised to the power of a negative value, is equivalent to the reciprocal of that expression. An example is shown below;

a^{-x}=\frac{1}{a^x}

Therefore, our equation can now be re-written as follows;

\begin{gathered} 2^{-4}=\frac{1}{16} \\ \frac{1}{2^4}=\frac{1}{16}^{} \\ \frac{1}{16}=\frac{1}{16} \end{gathered}

However, the question requires the answer to be expressed in exponential form. Therefore,

\log _2\frac{1}{16}=2^{-4}

4 0
2 years ago
What is the length of the diagonal of a 10cm by 15cm rectangle?
Butoxors [25]
10 x 15=150
150 is the answer

5 0
4 years ago
WILL BE GIVING BRAINLIEST AND 50 PTS!!!! NO GIBBERISH OR LINKS PLEASE!!!
MaRussiya [10]

Volume of square pyramid = a^2 x h/3

Volume of pyramid A = 9^2 x 10/3

Volume of pyramid A = 270 cubic inches.

Divide volume of B by A:

1350/270 = 5

5 x 100 = 500 % bigger

To check, rewrite 500% as a decimal and multiply by the volume of A:

500%/100 =5

270 x 5 = 1350

This equals the volume of B, so the scale was calculated correctly.

4 0
3 years ago
X^2+3x+37=-7x
elena-s [515]

Answer:

x= -74 or -84

Step-by-step explanation:

x^2+3x+37=-7x

x^2+3x+7x+37=0

x^2+10x+37=0

this convert to following

( - b +  -  \sqrt{ {b}^{2} }  - 4 \times a \times c) \div 2 \times a

-b= -(10), a= 1, c =37

according to that

x= -74 or x= -84

8 0
3 years ago
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