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Vanyuwa [196]
2 years ago
9

How many digits are there in the​ Hindu-Arabic form of ​25,840 x10^20?

Mathematics
1 answer:
melamori03 [73]2 years ago
3 0

9514 1404 393

Answer:

  25

Step-by-step explanation:

The place whose value is 10^n has n digits to the right of it. This number can be written as ...

  0.25840×10^25

which makes the digit 2 be the 25th digit to the left of the decimal point.

There are 25 digits in the Hindu-Arabic form:

  2,584,000,000,000,000,000,000,000

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The fish population of Lake Collins is decreasing at a rate of 5% per year. In 2004 there were about 1,350 fish. Write an expone
ad-work [718]

Answer:

Part 1) The exponential function is equal to y=1,350(0.95)^{x}

Part 2) The population in 2010 was  992\ fish

Step-by-step explanation:

Part 1) Write an exponential decay function that models this situation

we know that

In this problem we have a exponential function of the form

y=a(b)^{x}

where

y ----> the fish population of Lake Collins since 2004

x ----> the time in years

a is the initial value

b is the base

we have

a=1,350\ fish

b=(100\%-5\%)=95\%=0.95

substitute

y=1,350(0.95)^{x} ----> exponential function that represent this scenario

Part 2) Find the population in 2010

we have

y=1,350(0.95)^{x}

so

For x=(2010-2004)=6\ years

substitute

y=1,350(0.95)^{6}=992\ fish

7 0
3 years ago
Use an addition or subtraction formula to find the exact value of the expression, as demonstrated in example 1. tan(105°)
strojnjashka [21]
Use an addition or subtraction formula to find the exact value of the expression, as demonstrated in example 1. tan(105°)

7 0
3 years ago
I need help please help me
rusak2 [61]

Answer:

Ok,You need to put the value of x that appears in the table to give you the result of h (x)

1.h(x)=4x+5

h(-5)=4(-5)+5

h(-5)= -20+5

h(-5)= -15

2.h(-1)=4(-1)+5

  h(-1)= -4+5

  h(-1)= 1

3. h(1)=4(1)+5

   h(1)=4+5

   h(1)=9

4. h(3)=4(3)+5

   h(3)=12+5

   h(3)=17

5. h(4)=4(4)+5

    h(4)=16+5

    h(4)=21

Step-by-step explanation:

  x                  h(x)

-5                    -15

-1                       1

 1                       9

 3                      17

 4                      21

I hope this help.Please give me the brainliest

4 0
3 years ago
Solve x ^ 2 - 3x = - 8 using the quadratic formula.
Sergio039 [100]

Answer: \frac{3 +- \sqrt{23}i}{2} If using complex numbers, or undefined if using all real numbers

Step-by-step explanation:

Moving -8 to the left side of the eq by adding both sides by 8=

x^2-3x+8=0

The quad formula:\frac{-b  +- \sqrt{b^2-4ac}}{2a}

a=1 b=-3 c=8

Inserting a b c values into formula: \frac{-(-3)  +- \sqrt{(-3)^2-4(1)(8)}}{2(1)}

Simplifying: \frac{3 +- \sqrt{9-32}}{2}

\frac{3 +- \sqrt{-23}}{2}  Since the square root of a negative number doesn't exist in the set of real numbers, the equation is undefined.

OR

\frac{3 +- \sqrt{23}i}{2} Using complex numbers i, to replace the negative number created by subtracting 9-32.

4 0
2 years ago
I need some help, sooooo... please?
Ivan
<h3>Answer:   x+3</h3>

==============================================================

Explanation:

Use a graphing tool like Desmos to plot y = |x+3|

See below.

The graph is a V shaped figure. The vertex is at (-3,0). The interval x > 5 is entirely to the right of this vertex. So we only focus on the right hand side of the V shape.

The line making up this right hand side is the equation y = x+3

Therefore, if x > 5 then y = |x+3| becomes y = x+3

In short, we erase the absolute value lines.

3 0
2 years ago
Read 2 more answers
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