How many area codes (ABC) would be possible if the first 2 digits can be any number 2-9 & last digit can be any number 0-9?
A. 640
B. 25
C. 729
D. 1000

Answers

Answer 1
The answer would be A. 640

Possibilities for the first two are 8 and 8 (2-9 is 8 numbers) and the last is 10 (0-9 is 10 numbers)

So the probability is found by multiplying 8*8*10 which is 640

Related Questions

Help plz:)))I’ll mark u Brainliest

Answers

Answer:

Step-by-step explanation:

b/c they are similar triangles and b/c you know one has an angle of 59 and the other has an angle of 75 that they both have those angels.. and that the total is 180

they are asking what is angle S ..  that looks like it's the same one as angle P on the other triangle  so ...

S= 59°

Help please with number 11

Answers

Answer:

No

Step-by-step explanation:

The triangles are not similar since triangle B has an angle (18 cm) that does not correspond to 10, unlike the other angles which you can get by multiplying 3/2.

The answer Is A. 6cm,8cm,10cm

A map shows a town with a area of 3.5 square inches. if the map has a scale of 1 inch : 4 miles, what is the actual area of the town?

Answers

Answer:

14 sq. mi.

Step-by-step explanation:

Based on the scale we can see that for every inch there are an actual 4 miles in the town. Therefore, this is 4 times the model version meaning that if the model's area is calculated as 3.5 square inches then we can multiply this by 4 to get the actual area of the town.

3.5 sq. in. * 4 = 14 sq. miles

Finally, we can see that the area of the town is 14 sq. mi.

Answer:

56

Step-by-step explanation:

56 it’s for Acellus

determine the number of terms in each algebraic expression (6a+9)-7b​

Answers

Answer:

3

Step-by-step explanation:

(6a+9)-7b

There are 3 terms

Answer:

There are three terms, which means it is trinomial expression.

the first term is 6a

the second term is 9 and

the third term is -7b

Find the general solution of the given differential equation.y^(4)+18y"+81y=0

Answers

Answer:

The general solution of the given differential equation

[tex]y = ( c_{1} + c_{2} x ) cos3 x + ( c_{3} +c_{4} x) sin3 x[/tex]

Step-by-step explanation:

Step(I):-

Given differential equation

                                   y⁴+18y"+81y=0

                         ⇒    (D⁴+18D²+81)y =0

The auxiliary equation

                               [tex]m^4+18m^2+81 =0[/tex]

                              [tex](m^2)^{2} + 2 (9) m^{2} +(9)^2 = 0[/tex]

        we will use formula  ( a + b)² = a² + 2 a b + b²    

                  ⇒    ( m² + 9 ) ² = 0

                   ⇒    ( m² + 9 ) ( m² + 9 ) = 0

                      [tex]m^{2} =-9\\m= - 3i and m=3i[/tex]

            m² + 9 = 0      

      [tex]m² = -9\\m= -3i and m=3i[/tex]

The complex roots are   0± 3 i ,0 ± 3 i

Step(ii):-

The complementary function  

              [tex]y = e^{\alpha x } ( c_{1} + c_{2} x ) cos\beta x + ( c_{3} +c_{4} x) sin\beta x[/tex]

The general solution of the given differential equation

          [tex]y = e^{0 x } ( c_{1} + c_{2} x ) cos3 x + ( c_{3} +c_{4} x) sin3 x[/tex]

The general solution of the given differential equation

   [tex]y = ( c_{1} + c_{2} x ) cos3 x + ( c_{3} +c_{4} x) sin3 x[/tex]    



             



Can someone please help me ....An average American throws away 4 to 5 pounds of waste each day. Make an estimate of the number of pounds of waste that is produced in a typical month by each household, if a typical household has 2 to 3 people?

Answers

A typical month is 30 days so each house hold is 8 to 15 pounds a day. And the total is 240 to 450 per month

There is a bag with 10 balls inside it. 2
are footballs, 3 are soccer balls, 1 is a
softball, 2 are baseballs, and 2 are
basketballs. If you were to reach in and
grab one ball, what is the probability
that it is a softball or not a basketball?
Enter your answer in simplest form.

P(softball or not a basketball)=

Answers

The probability of grabbing a ball that is either a softball or not a basketball is 9/10, or 0.9 when expressed as a decimal.

What is probability?

The likelihood or chance of an event occurring is measured by probability. Usually, it is stated as a number between 0 and 1, where 0 denotes an event's impossibility and 1 denotes its certainty.

According to question:

There are 10 balls in total, and 2 of them are basketballs. So the number of balls that are not basketballs is 10 - 2 = 8.

Of these 8 balls, we know that 1 is a softball. So the number of balls that are either a softball or not a basketball is 1 + 8 = 9.

Therefore, the probability of grabbing a ball that is either a softball or not a basketball is:

P(softball or not a basketball) = 9/10

So the probability of grabbing a ball that is either a softball or not a basketball is 9/10, or 0.9 when expressed as a decimal.

To know more about probability visit:

https://brainly.com/question/29221515

#SPJ1

Which of the following expressions is a monomial?


x-2


y4 - x3


4 - a


5c3

Answers

Answer:

5[tex]c^{3}[/tex]

Step-by-step explanation:

A monomial is an "expression" containing one element. It can be operations such as multiplication or division (or exponents, exponents are technically multiplication). A monomial cannot have addition or subtraction.

Answer:

it is 5c3 because it have one term

4x−3y=8
4x−y=−8
work out x and y

Answers

Answer:

y = -8

x = -4

okay i hope you got it

The area of the triangle below is 33.12 square inches. What is the length of the base?

Answers

Answer:

Step-by-step explanation:

12.72

Elton played in a four day golf tournament using the table below what is his final score for the tournament

Answers

Answer:

sshbsjbssbjssjnsjs

Step-by-step explanation:

Answer:

-8

Step-by-step explanation:

-6-3+2-1=-8

Michelle purchases a pair of jeans for $35 and a dress for $47. The store charges 8% sales tax on all purchases. How much will Michelle need to pay for her purchase, including tax?

Answers

Answer:

Michelle needs to pay $88.56 to pay for her purchase, including tax.

Step-by-step explanation:

The purchasing cost of a pair of jeans = $35

The purchasing cost of dress = $47

The total purchase cost = $35 + $47

                                        = $82

Given that the store charges 8% sales tax on all purchases.

Thus,

Tax amount  = 8% × 82

                      = 8/100 × 82

                      = 0.08 × 82

                      = 6.56

The total cost including the tax = Tax amount + The total purchase cost

                                                    = 6.56 + 82

                                                    = $88.56

Therefore, Michelle needs to pay $88.56 to pay for her purchase, including tax.

Ming took a cab across town. His fare was $22, and he leaves an 18% tip. What is the total amount Ming pays the cab driver?

Answers

Answer:

$25.96

Step-by-step explanation:

Multiply the original price by the decimal value of the percentage then add that number to the original price

22*.18=3.96

3.96+22=25.96

Helppp me pleaseeeeeee

Answers

Answer:

where is ur question bro?

Answer:

what is your doubt

question??

Economists are studying your local housing market to see whether mortgage approval rates impact home prices. They collect data on mortgage approval rates in your area and compare them with local housing prices. In this experiment, what are the variables measures? A. Mortgage approval rates and discrimination B. Housing prices and income. C. Mortgage approval rates and income. D. Mortgage approval rates and housing prices

Answers

Answer:

D. Mortgage approval rates and housing prices

Step-by-step explanation:

From the study being conducted by the economist, the two variables in their study happens to be the Mortgage approval rates and the housing prices. This is because, the local housing market is influenced by those two.

The higher the value of one variable, it may have a direct or indirect influence on the value of the other variable. To determine the relationship between the two means it need to be investigated.

I don’t understand pls help

Answers

Answer:

one solution is the correct answer

abraham has 16 blue marbles and 18 rwd marbles. if he wamts to place them in identical groups without any marbles left over

Answers

Answer:

If Abraham divides them into 2 separate groups, he should have 17 marbles on each group.

Step-by-step explanation:

Solve the following equation for x.
−13−4x−13x=−14+15x

Answers

Answer:

x = 0.84375

Step-by-step explanation:

-13 - 4x - 13x = 14 + 15x

-13 - 17x = 14 + 15x

-13 - 17x + 17x = 14 + 15x + 17x

-13 = 14 + 32x

-13 - 14 = 32x

-27 = 32x

-27 / -32 = 32x / 32

0.84375 = x

Hope this helps!

Evaluate the following function for (3, -1):
f(x, y) = 2x – 3y + xy^2

Answers

Answer:

f(3, -1) = 12

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Algebra I

Function Notation

Step-by-step explanation:

Step 1: Define

f(x, y) = 2x - 3y + xy²

(3, -1) is x =3 and y = -1

Step 2: Evaluate

Substitute:                    f(3, -1) = 2(3) - 3(-1) + 3(-1)²Exponents:                   f(3, -1) = 2(3) - 3(-1) + 3(1)Multiply:                        f(3, -1) = 6 + 3 + 3Add:                              f(3, -1) = 9 + 3Add:                              f(3, -1) = 12

In (3,-1) the first number is x and the second number is y.

Replace x and y in the equation and solve:

2x - 3y + xy^2 = 2(3) -3(-1) + (3)(-1)^2

Simplify:

6 + 3 +3 = 12

The answer is 12

What should the following rate be divided by to convert it to a unit rate?
6 inches
12 hours


A.12/12
B.2/2
C.12
D.6/6

Answers

Answer:

Can someone help, please?

-1/2(7z+4)+1/5(5z-15)

Answer:

21

Step-by-step explanation:

bc i said

500 sixth-grade students were surveyed. Of these students that were surveyed 375 had been to a baseball game, 270 own either a catcor a dog, 125 had traveled on an airplane. What is the ratio of sixth-grade students who traveled on an airplane to the total number of sixth-grade students surveyed?

Answers

The ratio in three ways are 500 : 125 or 100 : 25 or 4 : 1
Solution:
Given that,
Five hundred sixth-grade students were surveyed
Which means,
sixth-grade students = 500
125 had traveled on an airplane
What is the ratio of total sixth-grade students to the number of students who had traveled on an airplane?
Therefore,
total sixth-grade students : students traveled on airplane = 500 : 125
Ratio = 500 : 125
Reduce to lowest terms,
Divide both sides by 5
Ratio = 100 : 25
Further reduce to simplest terms,
Divide both sides by 25
Ratio = 4 : 1
Thus the ratio in three ways are 500 : 125 or 100 : 25 or 4 : 1

In a country that only wants girls, every family continues to have children until they have a girl. If they have a boy, they have another child. If they have a girl, they stop. What is the proportion of boys to girls in the country

Answers

Complete Question

In a country in which people only want Girls, every family continues to have children until they have a Girl. If they have Girl, they stop. If they have boy, they will continuous have child. Assuming that the birthrate of Girl is 52%, what is the proportion of Girl in the country?

Answer:

0.52

Step-by-step explanation:

From the question we are told that

52% is the birthrate of Girls

Therefore

       [tex]\frac{52}{100} =0.52[/tex]

0.52 is the proportion of Girls to boys in that country

Compute the surface area of the portion of the sphere with center the origin and radius 4 that lies inside the cylinder x^2+y^2=12

Answers

Answer:

16π

Step-by-step explanation:

Given that:

The sphere of the radius = [tex]x^2 + y^2 +z^2 = 4^2[/tex]

[tex]z^2 = 16 -x^2 -y^2[/tex]

[tex]z = \sqrt{16-x^2-y^2}[/tex]

The partial derivatives of [tex]Z_x = \dfrac{-2x}{2 \sqrt{16-x^2 -y^2}}[/tex]

[tex]Z_x = \dfrac{-x}{\sqrt{16-x^2 -y^2}}[/tex]

Similarly;

[tex]Z_y = \dfrac{-y}{\sqrt{16-x^2 -y^2}}[/tex]

[tex]dS = \sqrt{1 + Z_x^2 +Z_y^2} \ \ . dA[/tex]

[tex]=\sqrt{1 + \dfrac{x^2}{16-x^2-y^2} + \dfrac{y^2}{16-x^2-y^2} }\ \ .dA[/tex]

[tex]=\sqrt{ \dfrac{16}{16-x^2-y^2} }\ \ .dA[/tex]

[tex]=\dfrac{4}{\sqrt{ 16-x^2-y^2} }\ \ .dA[/tex]

Now; the region R = x² + y² = 12

Let;

x = rcosθ = x; x varies from 0 to 2π

y = rsinθ = y; y varies from 0 to [tex]\sqrt{12}[/tex]

dA = rdrdθ

The surface area [tex]S = \int \limits _R \int \ dS[/tex]

[tex]= \int \limits _R\int \ \dfrac{4}{\sqrt{ 16-x^2 -y^2} } \ dA[/tex]

[tex]= \int \limits^{2 \pi}_{0} } \int^{\sqrt{12}}_{0} \dfrac{4}{\sqrt{16-r^2}} \ \ rdrd \theta[/tex]

[tex]= 2 \pi \int^{\sqrt{12}}_{0} \ \dfrac{4r}{\sqrt{16-r^2}}\ dr[/tex]

[tex]= 2 \pi \times 4 \Bigg [ \dfrac{\sqrt{16-r^2}}{\dfrac{1}{2}(-2)} \Bigg]^{\sqrt{12}}_{0}[/tex]

[tex]= 8\pi ( - \sqrt{4} + \sqrt{16})[/tex]

= 8π ( -2 + 4)

= 8π(2)

= 16π

PLEASE PLEASE HELP!!!!

Answers

Answer:

4

Step-by-step explanation:


Could someone help?

Answers

Answer:

you would end up with -7

Step-by-step explanation:

do you need an explanation?

-7

Explanation:

Start at -8

Move to the right 13
*by now your at positive 5*

Move to the left 6
*by now your at -1*

Increase/add 4/ go to the left 4
*by now your at positive 3*

Decrease/subtract 10/ go to the right 10
*by now your at -7*

Therefore your answer is -7

. Elvira has 3 caps: one red, one green,
and one blue. She also has two green T-shirts, one blue T-shirt
and 3 black T-shirts. Elvira considers it a faux pas to ever be seen wearing blue and green at the same
time. What is the probability that Elvira will commit a fashion faux pas, if she randomly reaches into
her dresser and selects a cap and a T-shirt?


Please help me

Answers

Answer:

1/6

Step-by-step explanation:

There are 3 caps and 6 T-shirts

Probability of blue cap and green T-shirt is:

1/3*2/6 = 1/3*1/3 = 1/9

Probability of green cap and blue T-shirt is:

1/3*1/6 = 1/18

Probability of fashion faux:

1/9 + 1/18 = 3/18 = 1/6

In a sample of 41 water specimens taken from a construction site, 23 contained detectable levels of lead.

A 95% confidence interval for the proportion of water specimens that contain detectable levels of lead is 0.409


Required:
Construct a confidence interval for the proportion of water specimens that contain detectable levels of lead.

Answers

Answer:

drippy pen iss

Step-by-step explanation:

Help me please, thanks.

-Tornado

Answers

Answer:

[tex]x = - \frac{25}{3} [/tex]

Step-by-step explanation:

[tex] \frac{10}{3} = \frac{x}{( - \frac{5}{2}) } [/tex]

i) simplify the complex fraction

[tex] \frac{10}{3} = - \frac{2x}{5} [/tex]

ii) simplify the equation using cross multiplication

[tex]5(10) = - 2x(3)[/tex]

[tex]50 = - 6x[/tex]

iii) swap the sides of the equation

[tex] - 6x = 50[/tex]

iv) divide both sides of the equation by -6

[tex] \frac{ - 6x}{ - 6} = \frac{50}{ - 6} [/tex]

[tex]x = - \frac{50}{6} [/tex]

v) simplify the fraction

[tex]x = - \frac{25}{3} [/tex]

Yes that answers correct like this please

Could someone help bc I don’t know

Answers

Answer:

A. 56 is greater than 37

B. -1 is less than 2

C. -5 is less than 0

D. -4 is greater than -5

E. -6.0 is equal to -6

Step-by-step explanation:

These are the answers because:

1) When we are comaparing positive numbers, the greater the number, the higher value it has, however, when we are comparing negative numbers, the higher the number, the less value it has.

Hope this helps! :D

x reduced by 13 is atleast 15

Answers

Answer:

If you need an inequality here it is, can't really tell what you're trying to ask.

x-13≤15

Step-by-step explanation:

When we are talking about AT LEAST we are talking about the minimum.

For example, if I start a party and the age requirements for the party is at least 15, that means anyone who is 15 or older can enter the party.

So in your question, it says x reduced by 13 is at least 15, so reduced basically means to minus. So we are going to have x-13.

Then you have the "is at least 15". The at least is your sign for your inequality.

For example,

At least=≤

At most=≥

So the "is at least 15" is ≤15

Plug the numbers in: x-13≤15

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