There are about

3 * 10^11

stars in our galaxy and about 100 billion galaxies in the observable universe. Suppose every galaxy has as many stars as ours. How many stars are in the observable universe? Write in scientific notation.

Answers

Answer 1

The number of stars in 100 billion galaxies in scientific notation is

3 x [tex]10^{22}[/tex].

What is scientific notation?

Scientific Notation is the expression of a number in the form a x [tex]10^{b}[/tex]. where a is an integer such that 1 ≤ |a| < 10 and b is an integer too.

We have,

Number of stars in  our galaxy = 3 x [tex]10^{11}[/tex]

Number of galaxies in the observable universe = 100 billion.

1 billion = 1,000,000,000 = [tex]10^{9}[/tex]

Number of stars in 100 billion galaxies:

= 3 x [tex]10^{11}[/tex] x 100 x  [tex]10^{9}[/tex]

= 3 x [tex]10^{11 + 2 + 9}[/tex]

= 3 x [tex]10^{22}[/tex]

Thus the number of stars in 100 billion galaxies in scientific notation is

3 x [tex]10^{22}[/tex].

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Related Questions

a venn diagram shows information about 100 students in total, it shows students who take Life Sciences, Mathematics and Accounting. 12 take all the subjects, 21 takes both Accounting and Life Sciences,8 takes Life Sciences only. 16 takes Accounting and Mathematics, 20 takes Mathematics only, 10 takes Accounting only and 11 takes Life Sciences and Mathematics.

How many students are there who take Accounting and Mathematics but not Life Sciences​

Answers

Answer:

only mathematics = 20

only accounting = 10

mathematics and accounting = 16

All = 46

Step-by-step explanation:

please make my answer as brainelist

You are solving a measurement problem where the numbers 2.058 × 10^9 and 3.0571 × 10^−4 are divided. How many significant digits should the quotient have?

Answers

4 significant digit the quotient have.

Significant digit are the important digit in a number which convey the accuracy. all non zero numbers are significant and zero between two non zero is a significant digit and all zeros at the right of decimal is significant digit in number.

Given numbers are 2.058 * 10^9 and 3.0571 * 10^-4

To calculate the division first we have to solve the exponent.

In divide we subtract the powers

10^(9-(-4)) = 10^13

Now do the division

(2.058 ÷ 3.0571)*10^13 = 0.67318*10^13 = 0.6732 *10^13

=6.732 * 10^12

Number of significant digit are 4.

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3r^5 - 7r name each polynomial by degree and number of terms. if the polynomial is not win standard form rewrite it in standard form

Answers

The polynomial is quintic binomial.

The given polynomial is [tex]3r^5-7r[/tex]. The polynomial is given in standard form. i.e., terms are arranged in the decreasing order of its powers.

The degree of the polynomial is the highest power of 'r' in the polynomial.

So degree of the polynomial  [tex]3r^5-7r[/tex] is 5.

Polynomials of degree 5 are called quintic.

The polynomial has 2 terms:  [tex]3r^5, 7r[/tex]

Since the number of terms are two, we can call it binomial.

So the polynomial [tex]3r^5-7r[/tex] is quintic binomial.

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Don was thinking about buying a flat screen TV. The store marks it as
55 inches. (TV dimensions are given as diagonals.) If the length of the
TV is 35.51 inches, how tall is the TV?

Answers

The height of the television is 13.268 inches.

The television is in the shape of a rectangle and when we draw an imaginary diagonal line it would become a right-angle triangle in which the diagonal line would become the hypotenuse and the length would become base.

We need to find out the tallness of the television which is the perpendicular of our imaginary right-angle triangle

By applying the Pythagoras theorem [tex]H^{2}[/tex]= [tex]P^{2} + B^{2}[/tex]

As we need perpendicular the formula would become P = [tex]\sqrt{H^{2} -B^{2} }[/tex]

After putting the values in the above equation,

         we get = [tex]\sqrt{(55) – (35.51)}[/tex]

        =[tex]\sqrt{3025-1260.96}[/tex]

                       =[tex]\sqrt{1764.04}[/tex]

            =13.268 inches

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........................................................................

Answers

Answer:

1

Step-by-step explanation:

Chantel has 45 green balloons and 54 purple balloons to make into bunches for a school celebration.she wants each bunch to have the same number of each ballon.what is thr greatest numberof bunches chantel can make if she wants tobuse all of her balloons?how many purple balloons will she put in each bunch

Answers

Answer:  greatest number of bunches using all balloon is 48, using purple ballon is 27

Step-by-step explanation:

What is the slope of the line that passes through the points (–9, 2) and (0, 4)?

The slope of the line is
.

Answers

Answer:

[tex]\frac{2}{9}[/tex]

Step-by-step explanation:

Use slope formula.

y2-y1/x2-x1

Plug in the given info.

4-2/0+9

2/9

Hope this helps!

Please mark as brainliest if correct!

4,005/101 as a repeating decimal

Answers

Answer:

39.6534

Step-by-step explanation:

You divide 4005 by 101 and find the numbers that repeat as a decimal. In this case, the repeating decimals are 6534.

The length and width of a rectangle are consecutive odd integers the perimeter of the rectangle is 96 cm find the length and the width of the rectangle

Answers

The lengthof the rectangle is 23 cm and width of the rectangle is 25cm.

Consecutive odd integers are odd integers that follow each other and they differ by 2.

Given that Length and width are consecutive odd integers then

Let length be x so width will be x+2.

The [tex]Perimeter \ of \ Rectangle = 2 (Length \ + \ Width)[/tex]

Perimeter of Rectangle= 96cm

[tex]96 = 2 (Length \ + \ Width)\\(Length \ + \ Width) = 48\\x + x + 2 = 48\\2x = 46\\x = 23[/tex]

So, length = x = 23cm

therefore, width = x+2 = 25cm

Therefore, Length of the rectangle is 23 cm and the Width of the rectangle is 25 cm.

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Solve for x then find the measures of the following angles

Answers

Answer:

x= 10 , DEG = 60 , GEF = 40

Step-by-step explanation:

Firstly the angle DEH is 90 degrees because of the red square indicating it.

That means the angle DEF is also 90 degrees.

To find the x you would do:

6x + 4x = 90

now add the 6x and 4x together:

10x = 90

now divide 10 from both sides to isolate the x:

x = 10

now you have your x which is 10.

For angle DEG you plug in the 10 for the x:

DEG = 6(10)

after that you multiply the 6 and 10:

DEG = 60

For angle GEF you plug in the 10 for the x:

GEF = 4(10)

after that you multiply 4 and 10:

GEF = 40

1My little sister, Savannah, is three years old and has a piggy bank that she wants to fill. She
started with five pennies and each day when I come home from school, she is excited when I give her three pennies that are left over from my lunch money. How much money will Savannah have after 10 days? How many days will it take for her to have at least $1.50? Justify your answer with a mathematical model of the problem situation.

Answers

Answer:

Savannah will have 35 pennies after 10 days.

It will take her 49 days to have at least $1.50

Step-by-step explanation:

Start Value = .05

Linear Increase = .03

.05 + .03x = TV

TV = Total Value

10 days = .05 + .03(10)

10 days = $.35

.05 + .03x = 1.50

1.50 - .05 = 1.45

1.45/.03 = 48.33

48 days is not enough for her to have 1.50 as she is not gaining hourly but rather daily so it would take her 49 days to have at least 49

In triangle ABC the m

Answers

What ? Where is the question

Answer: Side C, Side B, Side A

Step-by-step explanation:

m<A=36 degrees

m<C=80 degrees

A+B+C=180 degrees

36+B+80=180

116+B=180

116-116+B=180-116

B=64 ==> m<B=64 degrees

Greatest to least: Side C, Side B, Side A

9,5 centimeters is the same as 9,50 centimeters???? YES NO and why please

Answers

Answer:

Yes

Step-by-step explanation:

9.50=9.5+0.00 ==> The only difference between 9.50 and 9.5 is that it has an extra zero in the right hand side of .5. Hence, you add 0.00 to 9.5 to get 9.50. 0.00=0. Whenever you add 0 to a number, that number won't change. Hence, 9.5=9.50.

Can someone please help me out? I don’t really understand the problem.

Answers

Answer: x=-8   y=7

Step-by-step explanation:

[tex]\displaystyle\\\left \{ {{-2x-5y=-19\ \ \ \ (1)} \atop {3x+2y=-10\ \ \ \ \ (2)}} \right.[/tex]

Multiply both parts of the equation (1) by 3 and multiply both parts of the equation (2) by 2:

[tex]\displaystyle\\\left \{ {(-2x)(3)-(5y)(3)=(-19)(3)} \atop {(3x)(2)+(2y)(2)=(-10)(2)}} \right. \\\\\left \{ {{-6x-15y=-57\ \ \ \ (3)} \atop {6x+4y=-20\ \ \ \ (4)}} \right. \\[/tex]

Summarize equations(3) and (4):

[tex]-11y=-77[/tex]

Divide both parts of the equation by -11:

y=7

Hence,

[tex]3x+2*7=-10\\3x+14=-10\\3x+14-14=-10-14\\3x=-24[/tex]

Divide both parts of the equation by 3:

[tex]x=-8[/tex]

WORD PROBLEMS INVOLVING RATE OF CHANGE

Answers

explantation is at the top :)

Key Features of Linear Functions:Question 2
The graph below shows the number of caramel apples
and the number of popcorn balls that the students in the
math club need to sell at their bake sale to raise $200.
What is the meaning of the y-intercept in this situation?
Select one: linear functions
How do i solve this problem

Answers

The slope of the line is the y-intercept, and 40 caramel apples are required to raise $200.

Students in the math club are supposed to sell enough caramel apples and popcorn balls to generate $200, according to the question. This expression's line equation has the following form:

Expression's slope is 4/5(200) = 4(40) = 160.

40 caramel apples are equal to 200 minus 160.

Thus, 40 caramel apples are required, and the slope of a line is represented by the y-intercept.

What is a line's slope?

The ratio between the y-axis and x-axis values is known as the slope of a line. Depending on the slope's values, it can

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Why is a normal distribution "normal"?

Answers

Step-by-step explanation:

Normal distribution, also known as the Gaussian distribution, is a probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.

Subsets and proper subsets — PLEASE HELP.

Answers

Using the concepts of subsets and proper subsets, the statements are classified, respectively, as:

False.True.False.False.

What are the subsets and proper subsets of a set?

Suppose we have a set given by:

A = {a, b, c}.


The subsets will be all possible combinations involving at least one element of A, or the empty subset, hence:

S(A) = {∅, {a}, {b}, {c}, {a, b}, {a, c}, {b,c}, {a,b,c}}

In which S(A) is composed by the subsets of A.

The proper subsets are all the subsets, except the empty set, hence:

PS(A) = {{a}, {b}, {c}, {a, b}, {a, c}, {b,c}, {a,b,c}}

In which PS(A) is composed by the proper subsets of A.

Hence:

The first statement is false, as the proper subsets of {1,3} are: {{1}, {3}, {1,3}}The second statement is true, as 12 and 14 both belong to the second set, hence {12, 14} is a subset.The third statement is false, as every set will be a subset of itself.The fourth statement is false, as the only subset of the empty set is the empty set.

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Expand each binomial. (p+q)⁶

Answers

  The binomial expansion of the given expression is:

p⁶ + q⁶ + 8p⁵q + 17p⁴q² + 20p³q³ + 11p²q⁴ + 4pq⁵

What is a polynomial?

   A polynomial is a set of numbers and letters that make up an expression that has a meaning, the letters are variables and the numbers are coefficients or independent terms.

 Depending on the number of terms it can be :

monomialbinomialtrinomial

 We solve first by perfect square trinomial, then we apply the distributive property.

(p + q)⁶ = (p + q)²(p + q)²(p + q)²

(p + q)²= p² + 2pq + q²

(p² + 2pq + q²)(p² + 2pq + q²)

p⁴ + 2p³q + p²q² + 2p³q + 4p²q² + 2pq³ + q²p² + 2pq³ + q⁴

p⁴ + 4p³q + 6p²q² + 2p³q + 2pq³ + q⁴

(p⁴ + 4p³q + 6p²q² + 2p³q + 2pq³ + q⁴)(p² + 2pq + q²)

    p⁶ + 4p⁵q + 6p⁴q² + 2p⁵q + 2p³q³ + p²q⁴

+( 2p⁵q + 8p⁴q² + 12p³q³ + 4p⁴q² + 4p²q⁴ + 2q⁵p)

+(p⁴q² + 4p³q³ + 6p²q⁴ + 2p³q³ + 2pq⁵ + q⁶)

p⁶ + q⁶ + 8p⁵q + 17p⁴q² + 20p³q³ + 11p²q⁴ + 4pq⁵

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Angela wants to practice her sign language for the talent show next month. she decides that she will practice 1.4 hours on a monday, 212 hours on a tuesday, and 5 hours on a saturday. if angela uses this schedule for 4 weeks, how many hours will she have practiced in total?

Answers

If angela uses this schedule for 4 weeks, the total number of hours she will many have practiced in total is 35.6 hours

Total time for practical

Week 1:

Monday = 1.4 hoursTuesday = 2 1/2 hoursSaturday = 5 hours

Total = Monday + Tuesday + Saturday

= 1.4 + 2 1/2 + 5

= 1.4 + 2.5 + 5

= 8.9 hours

if angela uses this schedule for 4 weeks

Total number of hours she practice for weeks = 8.9 hours × 4

= 35.6 hours

Therefore, if angela uses this schedule for 4 weeks, the total number of hours she will many have practiced in total is 35.6 hours.

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The spinner is divided into 8 equal sections.

b. If the arrow lands on a number, what is the probability that it will land on an odd number?

Answers

The probability for the arrow that land in the odd number is 1/2.

Probability:

Basically, the word probability define the possible way of occurring the event.

Given,

The spinner is divided into 8 equal sections.

Here we need to find if the arrow lands on a number, what is the probability that it will land on an odd number.

Let us consider that the spinner has 8 equal-sized sections numbered 1 to 8.

Since the sections have equal size, each section is equally probable.

The probability of falling on each section is therefore 1/8.

We know that, in the 8 sections,

There are four odd numbered sections.

Hence, probability is

=> 4/8

When we simplify it,

=> 1/2

Therefore, the probability for the arrow that land in the odd number is 1/2.

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can someone help me with this question please? I'm confused

Find the perimeter when 106 triangles are put together in the pattern shown below. Assume that all triangle sides are 1 cm long.

Answers

Using an arithmetic sequence, it is found that the perimeter when 106 triangles are put together is of 108 cm.

What is an arithmetic sequence?

In an arithmetic sequence, the difference between consecutive terms is always the same, called common difference d.

The nth term of an arithmetic sequence is given by:

[tex]a_n = a_1 + (n - 1)d[/tex]

The perimeter of a figure is the sum of the outer sides of the figure. Hence, considering that all sides are 1 cm long, we have that:

When there is one triangle, the perimeter is of 3 cm.When there are two triangle, the perimeter is of 4 cm(1 + 1 + 1 + 1 = 4), as shown in the figure given at the end of the answer.When there is three triangles, the perimeter is of 5 cm.When there is four triangles, the perimeter is of 6 cm.

Hence the first term and the common difference are given as follows:

[tex]a_1 = 3, d = 1[/tex]

Hence the 106th term of the sequence is:

[tex]a_{106} = 3 + 105 = 108[/tex]

The perimeter when 106 triangles are put together is of 108 cm.

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Simplify by combining like terms. 2(h+2 g)-(g-h)

Answers

The simplification by combining like terms of 2(h + 2g) - (g - h) is 3(h + g).

According to the given question.

We have an expression 2(h + 2g) - (g - h).

As we know that, like terms are terms whose variables (and their exponents such as the 2 in x2) are the same.  when we combine like terms, such as 2x and 3x, we add or subtract their coefficients.

Since, we have to combine the like terms of the given expression

2(h + 2g) - (g - h).

Here 2h, and h and 2g and -g are the like terms.

So, we add and subtract coeffcients of h and g to simplify the given expression.

Therefore, the simplification of 2(h + 2g) - (g - h) is given by

= 2(h + 2g) - (g - h)

= 2h + 4g - g + h

= 3h + 3g

= 3(h + g)

Hence, the simplification by combining like terms of 2(h + 2g) - (g - h) is

3( h + g).

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A meeting room is set up with 16 rows of seats. The number of seats in a row increases by two with each successive row. The first row has 12 seats. What is the total number of seats?
b. What is the number of seats in the 16 th row?

Answers

The most commonly used explicit of an arithmetic sequence is given as,

an = a + (n - 1) d

Each term in the sequence can easily be solved/computed without knowing the other terms in the sequence. Now by using the given information, we can say that,

2nd row seat = 12+ 1x2

3rd row seat = 12 + 2 x2

nth seat = 12 + (n-1) x 2

16th row seat = 12 + (16–1) x2 = 42

Since the number of seats is increasing at a constant rate, we can calculate the average number of seats in each row by taking the average of the first and last rows,

Average number of seats per row = (12 +42)/2= 27.

So total seats = average per row x number of rows.

= 27 x 16 = 432.

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2 < n + 6 </= 10
help she didn't go over this in class and it's due tomorrow ​

Answers

Answer:

- 4 < n ≤ 4

Step-by-step explanation:

2 < n + 6 ≤ 10 ( subtract 6 from each interval )

- 4 < n ≤ 4

70 times 70 equal what

Answers

Answer:
4,900


70x70= 4,900

Answer:

4900

Step-by-step explanation:

70x70=4900


In the figure below, R is between Q and s, and s is between R and T. If RT=9, RS=7,
and QS=13, find QT.

Answers

Answer: QT = 15

Step-by-step explanation:

RT=9, RS=7, and QS=13

Find QT=QR+RT

find QR=QS-RS

QR=13-7=6

therefore QT=QR+RT=6+9=15

Please help with #13

Answers

Using the formula for the distance between two points, the relationship between RA and R'A is given by:

RA = R'A.

What is the distance between two points?

Suppose that we have two points, [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex]. The distance between them is given by:

[tex]D = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]

This formula is derived from the Pythagorean Theorem, as the points form a right triangle in the xy-plane, with the hypotenuse being the distance between them.

The coordinates of the points of interest to find the segments' lenghts are given as follows:

R(-5,-5).A(1.5, 1.5).R'(8,8).

Applying the formula, the length of RA is given by:

[tex]RA = \sqrt{(1.5 - (-5))^2+(1.5 - (-5))^2} = 9.19[/tex]

Applying the formula, the length of R'A is given by:

[tex]R^{\prime}A = \sqrt{(1.5 - 8)^2+(1.5 - 8)^2} = 9.19[/tex]

Hence the relationship for the length of the segments is:

RA = R'A.

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The formula I = √W/R gives the electric current I in amperes that flows through an appliance, where W is the power in watts and R is the resistance in ohms. Which set of numbers best describes the value of I for the given values of W and R ? W=100, R=25

Answers

The equation be I = √W/R  

Where I is the current.

W stands for electrical power.

R stands for resistance in ohms then the value of I = 1.414

What is meant by electrical power?

A circuit's ability to transport electrical energy is referred to as its electric power. One joule per second, or one watt, is the SI unit of power. Similar to other SI units, watts have standard suffixes that refer to thousands, millions, and billions of watts as kilowatts, megawatts, and gigawatts, respectively.

Let the equation be I = √W/R

Where W and R are both within the square root symbol and 

I is the current.

W stands for electrical power.

R stands for resistance in ohms.

When W = 100, R = 25, to solve for the value of I for each set.

I = √100/25

The square root of I = √4

W = 100, R = 50 and I = 2.

I = √100/25

The square root of I = √2

Therefore, the value of I = 1.414

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Question 7(Multiple Choice Worth 1 points)
(02.05 MC)
Determine the range of f(x) = x + 51.
{y-∞ {y-5 {y|0 ≤y<∞o}
{y|5≤y<∞o}

Answers

The range of the function f(x) = x + 51 is {y | -∝ < y < ∝}

What is the range of a function?

The range of a function is the set of output values of the function

How to determine the range of the function?

The function is given as

f(x) = x + 51

The above function is a linear function

The range of any linear function is the set of all real numbers

This is represented as

-∝ < f (x) < ∝

This can also be represented as

-∝ < y < ∝

So, we have

{y | -∝ < y < ∝}

Hence, the range of the function f(x) = x + 51 is {y | -∝ < y < ∝}

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