Mathematics High School

In a certain year, the average e-mail user sent or received 111 e-mails each day. The number of e-mails received was 3 more than twice the number
sent. How many were sent and how many were received each day?

Answers

Answer 1

Answer:

Number of sent mail = 36

Number of received mail = 75

Step-by-step explanation:

Let,

x be the number of mails sent

y be the number of mails received

According to given statement;

x + y = 111      Eqn 1

y = 2x + 3     Eqn 2

Putting value of y from Eqn 2 in Eqn 1

x + 2x + 3 = 111

3x = 111 - 3

3x = 108

Dividing both sides by 3

[tex]\frac{3x}{3}=\frac{108}{3}\\x = 36[/tex]

Putting x = 36 in Eqn 2

y = 2(36) + 3

y = 72 + 3 = 75

Hence,

Number of sent mail = 36

Number of received mail = 75

Related Questions

12x=9y+27 in slope intercept form with work

Answers

-8 I believe is the answer

When changing 67, 430,000 to scientific notation, how many places is the decimal point moved? ​

Answers

Answer:

6.743*10^7

Step-by-step explanation:

Given data

The number is  67, 430,000

Let us count from the left the right

counting, we have 7 places to the right before the last digit 6

Hence the number of places is 7

The scientific notation is  

=6.743*10^7

What value of x makes this equation true?

6x - 3 = 5x - 5

Answers

Answer:

x= - 2

Step-by-step explanation:

giving brainliest to whoever can solve correctly

Answers

Answer:

The answer is 9

Step-by-step explanation:

4/9 = 9/4

Is 5 a factor of 24r + 45?
yes
no


HELP PLSSS

Answers

Answer:no

Step-by-step explanation:

Answer:

sure

Step-by-step explanation:

Ruby read 12 pages of a book in 18 minutes.
How many pages can she read per hour?

Answers

1.5 pages a minute I think :)

angle D=(7b+1) angle E=(2b+1) and angle F=(b+8) what is the measure of angle E

Answers

angleD=(7b+1)angle E=(2b+1)and angle F=(b+8)

Answer:

<E = 35

Step-by-step explanation:

7b + 1 + 2b + 1 + b + 8 = 180

combine like terms

7 + 2 + 1 = 10

10b

1 + 1 + 8 = 10

10b + 10 = 180

substract 10 from 180

= 170

10b = 170

170 divided by 10

= 17

now plug in for b for angle E

2 (17) + 1

= 35

What is the volume of a rectangular prism with a height of 5 meters and a base with area 19 square meters?

Enter your answer in the box.

Answers

the answer should be 95m^3

A sample is taken from all college freshmen. Right-handed students are excluded. What is this an example of?
A. Nonresponse bias
B. Nonselection bias
C. Response bias
D. Selection bias

Answers

Answer:

D

Step-by-step explanation:

Selection Bias because they are selecting people who are not Right handed.

Answer:

Step-by-step explanation:

D.SELECTION BIAS

a video is 20 min long. devin made the video faster 2 times. how many minutes and what fraction is the answer?

Answers

Answer:

10 minutes. 1/2

Step-by-step explanation:

Answer:

10/20???

Step-by-step explanation:

A recipe calls for 1/2 cup of milk for every 3/4 cups of flour. How much milk is required for every cup of flour. *

Answers

Answer:

2/3rds

Step-by-step explanation:

for 1 cup of flour you multiply 3/4th by 4 then devide by 3 giving you one cup of flour, now to keep it balanced you do the same to the milk, thus multiplying 1/2 by 4 then dividing it by three, which is 2, you then divide 2 by 3 giving you yours answer, 2/3rds

Answer:

A recipe calls for 1/2 cup of milk for every 3/4 cups of flour. How much milk is required for every cup of flour. *

Step-by-step explanation:

So for every  1/2 a cup is  3/4 cups of flour so if  you  need to know how much cups of flour  is  used for 1 total cup of  milk you have to  add you  multiply  it is optional if you add  put  the  two  fractions next to each other  you need to  add to the  side witch  the numbers are  3 so  3+3 is  6  so you got the answer just put  the number  4 under the  6 and  it will be 6/4  or you could say 1  2/4 or 1  1/2 .

what is the difference of -25 and -125?

Answers

Answer:

100

Step-by-step explanation:

Help I need somebody help not just anyboddyyayyayaya

Answers

Answer:

12:3/4, 3:3/16, 6:3/8

Step-by-step explanation:

12:3/4

by dividing that by 4, 3:3/16

by multiplying that by 2, 6:3/8

3/16 for the second one and the third one is 6

It takes 20 minutes to drive from Micah's apartment to his school. Which unit is
best for measuring how far Micah lives from school?
meters
centimeters
millimeters
kilometers

Answers

Kilometres. 20min by driving is a long distance.

The best unit for measuring distance of Micah apartment from school is kilometers.

Here,

It takes 20 minutes to drive from Micah's apartment to his school.

We have to find the best unit to measuring the distance between Micah's apartment from school.

What is Units in distance?

The most common units of distance are millimeters, centimeters, meters, and kilometers.

Now,

It drive and takes 20 minutes to reach Micha's school from his apartment.

That's mean distance between Micha's school from his apartment is too long.

Hence, we measure the distance from Micah's apartment to his school

in Kilometers.

Because, Meters, centimeter, millimeter all are smaller than kilometer.

So,

The best unit for measuring distance of Micah lives from school is kilometers.

Learn more the units in distance visit:

https://brainly.com/question/9606366

#SPJ2

Which is the least amount?
[A] 1.20 [B] 0.21 [C] 1.02 [D] 1.020

Answers

The Answer Is:

B (0.21)

Elimination method

3x + -3 =6
3x + 2y = 16​

Answers

Answer:

(4,2)

Step-by-step explanation:

hope this answerss


A circle has a diameter of 22 mm. What is its circumference?

Answers

here is your answer...

hope it's help ful

Step-by-step explanation:

Using the formula:

C = 2πr

d = 2r

Solving for C

C = πd = π·22 = 69.11504mm.

So,

C = 69.11504mm

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Answers

Answer:

1/12

Step-by-step explanation:

Answer:

1/12

Step-by-step explanation:

1 x 1 = 1

3 x 4 = 12

*twists ankle from jumping* aCK-

Answers

Answer: second sign

Step-by-step explanation:

0.375 as a fraction converted is 3/8

And what it is you’re saying if either of them are greater, less than or equal to

Since 3/8=0.375 and 1/2=0.5, it leads to 1/2 being greater to 3/8.

How do I solve this with substitution, can you please put the work and steps. (x,y)
y=x+2
3x+3y=6

Answers

Answer:

(0,2)

x=0

y=2

Step-by-step explanation:

We know that y=x+2

This means that we can subsitute this for y into the second equation

3x+3(x+2)=6

This is easy to solve

3x+3x+6=6

6x=0

x=0

We can then use this value for x in the second equation

y=0+2

y=2

I doubled checked this answer on desmos and my math is correct

Answer:

Answer:

(0,2)

x=0

y=2

Step-by-step explanation:

We know that y=x+2

This means that we can subsitute this for y into the second equation

3x+3(x+2)=6

This is easy to solve

Step 1:

3x + 3x + 6 = 6

Step 2:

6x=0

6      6

x=0

Then you should substitute y =x + 2 with the given solution from the first equation, x = 0

y=0 + 2

y=2

Your answer should be, x =0 and y = 2 or (0,2)

8 (5 + 4n) + 11 = -5 (3 - 7n)

Answers

Answer:

n=1

Step-by-step explanation:

(5 + 4n) + 11 = -5 (3 - 7n)

5+4n+11=−5(3−7n)

simplify

4n+16=−5(3−7n)

expand

4n+16=−15+35n

regroup

4n+16=35n−15

subtract

16=35n−15−4n

simplify

16=31n−15

add

16+15=31n

simplify

31=31n

n=1

Hope this helps :)

(pls mark brainliest)

Answer:

n=22

Step-by-step explanation:

8 (5 + 4n) + 11 = -5 (3 - 7n)

distribute

=> 40+32n+11=-15+45n

add like terms

=> 51+32n=-15+35n

subtract 35n on both sides and subtract 51 on both sides

32n-35n=-15-51

add like terms

-3n=-66

divide both sides by -3

n=22

The cost of 5 pounds of bananas is $3.25. What is the constant of proportionality that relates the cost in dollars, y, to the numbers of pounds of bananas, x?

Answers

Answer:

X = Cost of the bananas

Step-by-step explanation:

While y represents the weight (in pounds) of the bananas, x represents the cost of the bananas proportional to the weight.

Answer:

0.65

Step-by-step explanation:

Given the following triangle, which Trig function would you use to solve for the missing side length? *


Captionless Image
Sine
Cosine
Tangent

Answers

Answer:

cosine

Step-by-step explanation:

What is the length of the hypotenuse of the triangle below?
912
45"
90"
92
n
459
Choice
A.
92
B.
9
C
18
E
812
F.
18 V2

Answers

Answer:

D) 18

Step-by-step explanation:

(9√2)²+(9√2)²=h²

81x2+81x2=h²

162+162=h²

324=h²

√324=h

18=h

5.02 Which equation does the graph below represents?

1. y = -1/2x
2. y = -2x
3. y = 1/2x
4. y = 2x

Answers

y= 2x because it’s 8/4 which can be divided by 4 and it equals 2x

Answer:

2. y= -2x

Step-by-step explanation:

When the line is on an exact point like it is on (-4, 8), we can simplify it by going rise/run

Rise is the same as y (8), and your run is x (-4)

When you divide 8/-4, your answer will be -2

Therefore, the answer is y= -2x

if a sphere has the same volume as a cube with edge length 5, estimate the radius of the sphere

Answers

Answer:

The radius of the sphere will be:

[tex]r=3.1[/tex] units

Step-by-step explanation:

Given that a sphere has the same volume as a cube with edge length 5.

[tex]V_c=V_s[/tex]

[tex]\:a^3=\frac{4}{3}\pi r^3[/tex]

[tex]\:r^3=\frac{3\:a^3}{4\pi }[/tex]

[tex]\:\:r=\sqrt[3]{\frac{3\:a^3}{4\pi \:}\:\:}[/tex]

substitute a = 5

[tex]r=\sqrt[3]{\frac{3\:\left(5\right)^3}{4\pi \:\:\:}\:\:}[/tex]

[tex]r=3.1[/tex] units

Therefore, the radius of the sphere will be:

[tex]r=3.1[/tex] units

Find the radius of a circle in which an inscribed square has a side of 8 inches.​

Answers

Answer:

[tex]4\sqrt{2} =5.66[/tex]

Step-by-step explanation:

The square is in the circle, so the diameter is the diagonal line of the square. This divides the square into two right triangles.

Two sides of the right triangle equal 8. This qualifies it as a special right triangle. This triangle has two sides that = x (in this case 8) and the hypotenuse is [tex]x\sqrt{2}[/tex].

Substitute 8 in for x.

[tex]8\sqrt{2}[/tex] is the diameter, so we divide in half to get the radius = [tex]4\sqrt{2}[/tex]

Is 5.6742 rational number

Answers

Answer:

YES

Step-by-step explanation:

The sum of three consecutive even integers is 486. Find all three integers.​

Answers

Answer:

161 + 162 + 163 = 486

Step-by-step explanation:

(X) + (X + 1) + (X + 2) = 486

X + X + 1 + X + 2 = 486

3X + 3 = 486

3X + 3 - 3 = 486 - 3

3X = 483

3X/3 = 483/3

X = 161

4.25 • (–1.25) positive or negative?

Answers

Answer:

Negative

Step-by-step explanation:

Positive times a negative will always be negative

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