Another neighbor said, “My age is the difference between twice my age in 5 years and and twice my age 5 years ago.” How old is this neighbor? A third neighbor had the same claim for 17 years from now and 17 years ago. How old is this neighbor?

Answers

Answer 1

Answer:

The neighbor is 20 years old.

The third neighbor is 68 years old.

Step-by-step explanation:

Equations

Let's set:

x=current age of the neighbor

x+5=his age in 5 years

x-5=his age 5 years ago

He claims that his age is the difference between twice his age in 5 years and twice his age 5 years ago. Then:

x = 2( x + 5 ) - 2( x - 5 )

Operating:

x = 2x + 10 - 2x +10

Simplifying:

x = 20

The neighbor is 20 years old.

Repeating for the other neighbor, a similar equation is established:

x = 2( x + 17 ) - 2( x - 17 )

Operating:

x = 2x + 34 - 2x +34

Simplifying:

x = 68

The third neighbor is 68 years old.


Related Questions

Can someone help me with this problem and give the answer

Answers

Answer:

D

Step-by-step explanation:

No more means the other number is less than or equal to.

The American Academy Dermatology says that hair grows about 6 inches per year. How much hair can you expect to grow after 3 years, given that you do not get any haircuts.

Answers

About 18 inches / 1 foot and 6 inches

If hair grows about 6 inches every year, and we want to find out how much will grow in 3 years, we multiply.

6 x 3 = 18 inches

Then we can simplify it because there are 12 inches in a foot

18/12 = 1 6/12

If angle J and angle K are vertical angles, J and K are congruent.

Answers

Answer:

Yes they are congruent

Step-by-step explanation:

Hope this helps!!!!!!!

Yes they are congruent

Help me please I do not like math:(

Answers

Answer:

-2  1/8 for the first question

Step-by-step explanation:

Which equation can be used to find T the number of tickets each class needs to sell so that the total amount raised is the same for both classes

Answers

Answer:

C.

Step-by-step explanation:

If you know how much each class is selling tickets for and how much they've already raised then you take those two values and set them equal to each other.

2.5t + 350 = 3t + 225

To actually find the number of tickets each class would have to sell you would just solve for t.

Ron is saving money for college. Each month he deposits 10% of his net income plus

an additional $50 into a savings account. His net income, after taxes have been taken

out, is 80% of his gross income. Find the amount that Ron saves a month when his

gross income is $2400.

Answers

Answer:

$242

Step-by-step explanation:

His Gross income a month is $2400.

Now, we are told that his net income, after taxes have been taken out, is 80% of his gross income.

Thus;

Net income a month = 80% × 2400 = $1920

Now, Each month he deposits 10% of his net income plus an additional $50 into a savings account.

This means amount saved each month is = (10% × 1920) + 50 = 192 + 50 = $242

Find the length of the missing side. The triangle is not drawn to scale

Answers

Please add triangle image.

Answer:

i cant answer without a picture or something to see what the missing sides are..

comment the graph and i will answer the question

Step-by-step explanation:

2. This model represents an equation

(a) Write an equation that could be used to solve x.
(b) Solve the equation for x. Show your work

ILL GIVE YOU BRAINLIEST

Answers

Answer:

i believe its A. hope that helps

Step-by-step explanation:

Answer to The model represents the quotient of two fractions equation does this model represent

A.) 5x-1=-6
B.) 5x=-5 -5/5=-1 so x=-1
The answer is x=-1 because in order to solve the equation, you have to remove the -1, which means you add 1 to each side, because the -6 was negative, when you add 1 it goes to -5, at this point it should look like 5x=-5. Now you divide by 5 on both sides since the coefficient of x is 5, leaving you with the answer, x=-1

4y + 3 ≤ 5 - 10y nhttjj

Answers

Answer:

heres ur answer

Step-by-step explanation:

7723 as a fraction what is the answer

Answers

Answer:

7723 as a fraction is 7723/1

Step-by-step explanation:

What is the exact distance from (−5, 1) to (3, 0)?

Answers

Answer:

√65

Step-by-step explanation:

I am pretty sure this is the correct answer :)

Answer:

d = √(x2 - x1)² + (y2 - y1)²           given two points, (-5, 1)  (3, 0)

d = √(3 - (-5)² + (0 - 1)²

d = √(8)² + (-1)²

d = √64 + 1

d = √65       B. is the answer

Step-by-step explanation:

If Hector is 8 years old and Mary is 3 years old, how old will Mary be when Hector is 16? Can I use proportional reasoning in here

Answers

Answer:

Step-by-step explanation:

H=8

M=3

=>difference is 5 years

H=16

=>M=16+5=21

will be nice if you give me brainlies.Good luck!

Answer:

When he is 16 Mary will be 11

Step-by-step explanation:

First subtract 8-3 to see how much older hector is

You will get 5

Now subtract 16-5 to get 11

Can we use proportional reasoning?

NO!!!!!

Reasoning- did we subtract? Yes! You can’t find proportional reasoning if you subtracted or add

Which expression is equivalent to √100 +4√10 +3 −8 √10?
1) −4√10 + 13
2) 10 − √10
3) 3 − 2√10
4) √10

Answers

Answer:

√100 +4√10 +3 −8 √10 =  −4√10 + 13 TRUE

Step-by-step explanation:

Simplify the following:

sqrt(100) + 4 sqrt(10) + 3 - 8 sqrt(10)

Hint: | Simplify radicals.

sqrt(100) = sqrt(10^2) = 10:

10 + 4 sqrt(10) + 3 - 8 sqrt(10)

Hint: | Evaluate 10 + 4 sqrt(10) + 3 - 8 sqrt(10).

10 + 4 sqrt(10) + 3 - 8 sqrt(10) = 13 - 4 sqrt(10):

Answer:  13 - 4 sqrt(10)

12 ÷ –2 = PLEASE HELP ME I NEED HELP FAST

Answers

Answer:

-6

Step-by-step explanation:

Answer:

-6

Step-by-step explanation:

Can someone pls explain to me how Identify the domain and range of a graph!!, ​

Answers

Answer:

Ok

Step-by-step explanation:

So, the domain is the set of all possible values that can be inputted into the function. Or where is function on the x axis is the function defined. The range is similar but on the y axis. In this case, the function you have there appears to go on to infinity (I assume that is what the arrow means) and so the range would be [-1, -infinity) and domain [1, infinity). Brackets are important here because it shows that the function is still defined at point (1,-1), therefore, I used [ bracket symbol (I again assumed that the shaded in black dot at point (1,-1) means that the function is closed at that point and that when it is not shaded in, it is open). I feel like I didn't explain very well but good luck and hopefully someone does a better job that what I did.

-3(6 - 8i) standard form.

Answers

Answer:

6.

Step-by-step explanation:

6 - 8 = 2.

2 x 3- = 6.

Brainiest?

-3(6-8i) day you are the perfect example you from this

I will brainlist whoever gets it right.
The results of a swim meet are shown. Who swam faster? Explain your reasoning.
Name: /Event: /Time:

Tawni / 50-m Freestyle / 40.8

Pepta / 100-m Butterfly / 60.2

Susana / 200-m Medley / 112.4

Answers

I think it is the second one

Answer:

Susana

Step-by-step explanation:

divide the m by the time to get how many mps

50/40.8=1.225 mps

100/60.2=1.661 mps

200/112.4=1.779 mps

Which number is rational?
√2
10
016

Answers

16 I think is a rational number

The length of a football field including the end zones is 48 feet longer than four times the length of a tennis
court. It is also 282 feet longer than a tennis court.
How long is the foorball field?
How long is the tennis court?

Answers

Answer:  

T=78 feet (Tennis court)

360 feet (Football Filed)

Step-by-step explanation:

4T+48 = T+282

The length of the football field is 360 feet.

The length of the tennis court is 78 feet.

What is an expression?

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

We have to given that;

The length of a football field including the end zones is 48 feet longer than four times the length of a tennis court.

And,  It is also 282 feet longer than a tennis court.

Let the length of the tennis court = x

So, The length of the football field = 48 + 4x

Here, The length of the football field is 282 feet longer than a tennis court.

So, We get;

⇒ 48 + 4x = 282 + x

⇒ 4x - x = 282 - 48

⇒ 3x = 234

⇒ x = 78

Thus, The length of the football field = 48 + 4x

                                                         = 48 + 4×78

                                                         = 48 + 312

                                                          = 360 feet

The length of the tennis court = x

                                              = 78 feet

Learn more about the mathematical expression visit:

brainly.com/question/1859113

#SPJ2

(-12x^8 – 2v) - 11x^8

Answers

Answer:

-23[tex]x^{8}[/tex]-2v

Step-by-step explanation:

Is √38 rational or irrational

Answers

Answer:

Rational

Step-by-step explanation:

Answer:

irrational

Step-by-step explanation:

because it does not simplify into a whole number

Suppose m <6= 147º. Find <1 and m<3

Answers

Answer:

∠ 1 = ∠ 3 = 33°

Step-by-step explanation:

∠ 3 and ∠ 6 are same- side interior angles and are supplementary , thus

∠ 3 + ∠ 6 = 180° , that is

∠ 3 + 147° = 180° ( subtract 147° from both sides )

∠ 3 = 33°

∠ 1 and ∠ 3 are vertical angles and congruent, thus

∠ 1 = ∠ 3 = 33°

HELPPP ASAP PLSSS!!!

Answers

Answer:

a.) yes

b.) no

c.) yes

d.) yes

1. Yes
2. No
3. Yes
4.yes

Select the false statement

A. Dilations make pre-images bigger.
B. Dilations make pre-images smaller.
C. A dilated image has different angle measurements than the pre-image.
D. A dilated image has the same angle measurements as the pre-image.

Answers

Answer:

C

Step-by-step explanation:

A & B & D are true

It simply makes it bigger/smaller with keeping the same angle measurements.

Which one of these is in scientific notation?
8.98 x 5^6
8.987000
80.987 x 10
8.98 x 10^6

Answers

Answer:

8.98 x 10^6

Step-by-step explanation:

To be in scientific notation, the number has to be between 1 and 10 then the 10^# has to be present.

THe ratio of goldfish to gallons of water is 7 to 2 how many gallons of water do you need to keep16 fish

Answers

Answer:

56

Step-by-step explanation:

7:2    16/2=8   8(7)=56

pls i want 0.00659887 in a standard form​

Answers

Answer: 6.59887x10^-3 (scientific notation) (it’s already in standard form I think)

Step-by-step explanation:

A female hippopotamus can weigh 48,000
ounces. How many tons can a female
hippopotamus weigh?

Answers

Answer:

1.5 tons

Step-by-step explanation:

1 US tons is equal to 32,000 ounces. Using this, you divided 48,000/32,000 =  12/8 = 1.5 tons

PLEASE HELP I AM BEING TIMED!!!

Statment: Find the value of x that makes Line U and line V and parallel.

Options: 2
6
8
4

Answers

Answer:

6

Step-by-step explanation:

To be parallel the degree of both lines need to be equal

130=20x+10

120=20x

6=x

hi im maddie im only in 5th grade tgo but it says to express nine thousandsths as a decimal​

Answers

Answer:

0.009

Step-by-step explanation:

Simply move the decimal point from nine- then move it to the right three times.

If you need any more help, do not hesitate to ask me. :)

Answer: 0.009  hope this helps.

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