1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
VMariaS [17]
3 years ago
12

31 billion in scientific notation

Mathematics
2 answers:
matrenka [14]3 years ago
6 0

Answer:

3.1\times 10^{10}

Step-by-step explanation:

Scientific notation is a mathematical way to express a large in decimal form. In scientific notation the number is represented by a decimal number between 1 and 10 multiplied by ten.

For example : Scientific notation of 7500 is 7.5\times 10^3

The given number is 31 billion.

We need to write the given number in scientific notation.

We know that

1 billion = 1,000,000,000

Using this conversion, we get

31 billion =31,000,000,000

In can we written as

31,000,000,000=3.1\times 10,000,000,000

31,000,000,000=3.1\times 10^{10}

Therefore, the scientific notation of 31 billion is 3.1\times 10^{10}.

umka2103 [35]3 years ago
5 0
31 to the 9th power (31 9... i cant make the number small lol)
You might be interested in
Quick!!!
Diano4ka-milaya [45]

A function assigns the values. The graph can be plotted as shown below.

<h3>What is a Function?</h3>

A function assigns the value of each element of one set to the other specific element of another set.

Given the function, g(x) = -3(1/2)ˣ, therefore, the value of g(x) can be written as,

g(x) = -3(1/2)ˣ

g(-2) = -3(1/2)² = -0.75

g(-1) = -3(1/2)¹ = -1.5

g(0) = -3(1/2)⁰ = -3

g(1) = -3(1/2)¹ = -1.5

Hence, the graph can be plotted as shown below.

Learn more about Function:

brainly.com/question/5245372

#SPJ1

7 0
2 years ago
a rectangular plot of land 8m long and 6m wide.there is a flower bed in the form of a circle of radius 3m.find 1.area of land. 2
mixer [17]

Answer:

1)Area of the Land  is 48 square meters

2) Area of flower bed   is  28.26 square meter

3)Area of land excluding flower bed   is 19.74 square meters

4)cost of planting grass in land  excluding flower bed   is Rs 118.44

Step-by-step explanation:

Given:

Length of the Rectangular plot = 8m

Width of the rectangular plot =  6m

Radius of the circular flower bed = 3m

1)Area of the Land  

Area of the Rectangular plot  = Area of the Land  

Area of the Land   = length x width

Area of the Land   =  8*6

Area of the Land  = 48 square meters-----------------------------(1)

2. Area of flower bed

Area of flower bed =  4 x area of one quadrant

Area of flower bed =  area of the circle

Area of flower bed  = \pi r^2

where r is the radius

Now , substituting the values

Area of flower bed = \pi (3)(3)

Area of flower bed = 28.26 square meters-----------------------------(2)

3)Area of land excluding flower bed

Area of land excluding flower bed =  Area of the rectangular land - area of flower beds

Area of land excluding flower bed =  48 - 28.26

Area of land excluding flower bed = 19.74 square meters

4)cost of planting grass in land

Cost of planting grass per square meter = 6

Excluding the flower bed we have  19.74 square meters. to plant grass  for this 19. 74 square meters, the cost will be

=19. 74 \times 6

= Rs 118.44

6 0
3 years ago
19) Kyle has $600 in a savings account at the beginning of the summer. He wants to have at least $300 in his account by the end
Karolina [17]
If Kyle starts with $600 and wants to end with (at least) $300 She can withdraw up to $600−$300=$300
If he withdraw 20$/ week the 300 will last for 300/20 = 15 weeks
8 0
3 years ago
Suppose a consumer product researcher wanted to find out whether a highlighter lasted less than the manufacturer's claim that th
11111nata11111 [884]

Answer:

The null hypothesis is H_0: \mu = 14

The alternate hypothesis is H_a: \mu < 14

The test statistic is t = -1.95.

The p-value is of 0.0292. This means that for a level of significance of 0.0292 and higher, there is sufficient evidence to conclude that the  highlighters wrote for less than 14 continuous hours.

Step-by-step explanation:

Suppose a consumer product researcher wanted to find out whether a highlighter lasted less than the manufacturer's claim that their highlighters could write continuously for 14 hours.

At the null hypothesis, we test if the mean is 14 hours, that is:

H_0: \mu = 14

At the alternate hypothesis, we test if the mean is less than 14 hours, that is:

H_a: \mu < 14

The test statistic is:

t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, s is the standard deviation of the sample and n is the size of the sample.

14 is tested at the null hypothesis:

This means that \mu = 14

X = 13.6 hours, s = 1.3 hours. Sample of 40:

In addition to the values of X and s given, we have that n = 40

Test statistic:

t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}

t = \frac{13.6 - 14}{\frac{1.3}{\sqrt{40}}}

t = -1.95

The test statistic is t = -1.95.

P-value:

The p-value of the test is the probability of finding a sample mean lower than 13.6, which is a left tailed test, with t = -1.95 and 40 - 1 = 39 degrees of freedom.

Using a calculator, the p-value is of 0.0292. This means that for a level of significance of 0.0292 and higher, there is sufficient evidence to conclude that the  highlighters wrote for less than 14 continuous hours.

5 0
3 years ago
What is -0.75 as a fraction
erastovalidia [21]

Answer:

-0.75 as a fraction is -3/4

Explanation:

-3 divided by 4 is -0.75

4 0
3 years ago
Read 2 more answers
Other questions:
  • What is the square root of 4
    9·2 answers
  • PLEASE HELP 25 POINTS!!! WILL GIVE BRAINLIEST NEED HELP ASAP
    5·1 answer
  • A number, n, is added to 15 less than 3 times itself. The result is 101. Which equation can be used to find the value
    14·2 answers
  • Find the gcf of 15 and 85
    7·1 answer
  • You spin the spinner below once. What is the probability that the arrow will land on an even number?
    15·2 answers
  • What is 2% of 300 round to the nearest 100th​
    10·1 answer
  • HELP MEEEEEEEE PLZZZZ
    14·1 answer
  • A company sells widgets. The amount of profit, y, made by the company, is related to the selling price of each widget, x, by the
    9·1 answer
  • 4×..., biar jadi 100...<br><br><br>tolong ya kak...​
    9·1 answer
  • Factor completely 12x4 6x3 18x2. Prime 6(2x4 x3 3x2) 6x2(2x2 x 3) 6x(2x3 x2 3x).
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!