The average mother's, father's, and son's age is 28 years. The average mother's and son's age is 23 years. The average father's and son's age is 25 years. What is the son's age?

Answers

Answer 1

Answer:  son is 12 years old

Step-by-step explanation:

Let m be the age of mother, f be the age of father, and s be the age of son.

m + f + s = 28 x 3 = 84

m + son = 23 x 2 = 46

f + s = 25 x 2 = 50

m = 46 - s

f = 50 - s

we plug in m and f to the functions.

we get 46 - s + 50 - s + s = 84  

96 - s = 84  

-s = -12  

s = 12 years old


Related Questions

If a scale uses 2 cm to represent 6 ft., how many centimeters will be used to represent 21 ft.?

Answers

Answer: 7 cm

Step-by-step explanation:

2=6

4=12

6=18

8=24

7=21

Graph the equation y = 4x − 5 using slope and y−intercept.


on a graph

Answers

ANSWER:
The picture below is an image of what the graph should look like. Hope this helps!

Can some one plz help me

Answers

Answer:

A is the answer

Step-by-step explanation:

6 times 3.14 is 18.84

Given,

Diameter of circle = 6 in.

As we know that radius is half of diameter.

Radius = 6 × 1/2 = 3 inches

Now,

[tex] \sf Circumference \: of \: circle = 2 \pi \: r[/tex]

[tex] = \: 2 \times \dfrac{22}{7} \times 3[/tex]

[tex] = \dfrac{44}{7} \times 3[/tex]

[tex] = \dfrac{132}{7} [/tex]

[tex] = 18.84\: in.[/tex]

Hence,option ( a ) is correct.

what problem can be solved using 3/5 divided by 5/8

Answers

Answer: 24/25

Step-by-step explanation:

= 3/5 ÷ 5/8

= 3/5 × 8/5

= 24/25

Mr. Ammons is constructing a walkway through his rectangular Garden. The walkway runs diagonally as shown in the diagram. Which is closest to the length of the walkway?​

Answers

Answer:

your answer will be Option B. 28.3 ft

Step-by-step explanation:

[tex] \sqrt{15 ^{2} } + 24 ^{2} = 28.3[/tex] or

hope it helps you...

have a great day!!

The 28.3 ft is closest to the length of the walkway. the answer will be Option B. 28.3 ft

What is Pythagoras Theorem?

If ABC is a triangle with AC as the hypotenuse and angle B with 90 degrees then we have:

|AC|^2 = |AB|^2 + |BC|^2    

where |AB| = length of line segment AB. (AB and BC are rest of the two sides of that triangle ABC, AC being the hypotenuse).

It is given that Mr. Ammons is constructing a walkway through his rectangular Garden. The walkway runs diagonally as shown in the diagram.

We need to find the length of the walkway.

Using Pythagoras Theorem;

[tex]15^2 + 24^2 = x^{2} \\\\x^{2} = 225 + 576\\\\x^{2} = 801\\\\x = \sqrt{801} \\\\x = 28.30[/tex]

Therefore, 28.3 ft is closest to the length of the walkway. answer will be Option B. 28.3 ft

Learn more about Pythagoras theorem here:

https://brainly.com/question/12105522

#SPJ2

I have 8 pennies and some quarters, nickels, and dimes. The number of pennies plus nickels equals the number of dimes. I have 3 quarters for every 2 pennies and 3 dimes for every 2 quarters. How many coins are nickels? A. 28 B. 18 C. 15 D. 10

Answers

The answer is D. 10 nickels

Answer:

The answer is D.) 10

Step-by-step explanation:

I took a quiz and according to that its correct

how do you write the equation of a line in slope intercept form looking at a table?​

Answers

Slope-intercept form: [tex]y=mx+b[/tex] where m is the slope and b is the y-intercept

1) Determine the slope (m)

To find the slope, take two points from the table, [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex] and plug them into the following equation to solve for m:

[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Plug m into [tex]y=mx+b[/tex] .

2) Determine the y-intercept (b)

Take any point given in the table and plug them into [tex]y=mx+b[/tex] (along with the slope that you solved for earlier) as [tex](x,y)[/tex]. Solve for b. Plug b back into [tex]y=mx+b[/tex] along with the slope.

I hope this helps!

Please help fast! will mark brainliest and give a lot of points

put the following expressions into words-no solving.

3/4x(6+4)

1/2x(5-3 1/2)

Put the following into expressions-no solving

One-third the sum of 6 and 3

Four times the quotient of 3 and 4

One fourth the difference between 3 1/2 and 1/2

Answers

Answer:

Please help fast! will mark brainliest and give a lot of points

a
2.1 cm
2.9 cm
Find the value of a.

Answers

Step-by-step explanation:

[tex]a = \sqrt{ {2.9}^{2} - {2.1}^{2} } = \\ = \sqrt{8.41 -4.41 } = \\ \sqrt{4 } = 2[/tex]

Melissa has a total of $250 in her savigns account. She started with $110 and then earned the rest of her savings by babysitting. Melissa charges $7 per hour. Write an equation to represent the situation and determine the number of hours (h) she babysat last week.

Answers

Answer:

Number of hours= 20 hours

Step-by-step explanation:

Giving the following information:

Net savings (babysitting)= 250 - 110= $140

Rate per hour= $7

To calculate the number of hours that Melissa worked as a babysitter, we need to use the following formula:

Number of hours= net savings / rate per hour

Number of hours= 140 / 7

Number of hours= 20 hours

what is 1257÷45 I really need help​

Answers

Exact Form:

419/15

Decimal Form:

27.93...

Mixed Number Form:

27  14/15

Hope this helps(:

Calculate the simple interest collected by the bank if $1,500 is loaned for 3 years at 8% per annum

Answers

Answer:

$1500 divided by3=500

500+8=508

Answer:

$360

Step-by-step explanation:

I=PTR      =1500X3X8  = 36,000= $360

  100            100              100

Please Help! Evaluate this expression 10.82-9.99

A. 0.53

B. 0.83

C. 1.01

D. 1.23

Answers

0.53 hope that helps!!

May someone please help me with this :)

Answers

14 + 3 = 17 yd that is your answer I used Pythagorean theorem

Answer:

14.3 yd

Step-by-step explanation:

apply the pythagorean Theorem formula:

= sqrt(14^2 +3^2)

= sqrt(205)

roughly 14.3 yd

3. Ms. Basalyga won $2,000 in a math contest. She had to pay 13.5% of that amount
in taxes to the government. How much did Ms. Basalyga pay in taxes?

Answers

Answer:

. Ms. Basalyga won $2,000 in a math contest. She had to pay 13.5% of that amount

in taxes to the government. How much did Ms. Basalyga pay in taxes?

13.5/100×2000=270

Answer: Ms. Basalyga won $2,000 in a math contest. She had to pay 13.5% of that amount in taxes to the government. How much did Ms. Basalyga pay in taxes?

:13.5/100×2000=270

Step-by-step explanation

Brainliest for the correct answers

Answers

Answer:

a) 3a + 8b = 93

Hope this helps!

Could 85, 13 and 84 be the side length of a right triangle?

Answers

Answer:

No because the side lengths won't equal the hypotenuse

Step-by-step explanation:

85^2 + 13^2 ≠ 84^2

I WILL GIVE BRAINLIEST!!!

Answers

Answer:

Step-by-step explanation:

The perimeter of triangle ABC is 36 cm. Its sides are proportional to the numbers 3, 4 and 5. Find the sides of the triangle.

Answers

Answer:

3x+4x+5x=36

12x=36

x=36/12

x=3

3x=3 into 3=9

4x=4 into 3=12

5x=5 into 3=15

In Holborn School there are
460 students in Key Stage 3
320 students in Key Stage 4
165 students in Key Stage 5
Nimer is carrying out a survey.
He needs a sample of 100 students stratified by Key Stage.
Work out the number of students from Key Stage 3 there should be in the sample.
(2 marks)
students
Submit Answer
Skip for Now

Answers

Answer:

Total students = 460+320+165=945

Key stage 3 ... asafraction = 460 divide by 945

the number in a sample of 100 = 460 divide by 945 x 100= 48.67

So 48 or 49 (are both, acceptable answers).

Solve by elimination
-2x+5y=-1
3x+2y=11

Answers

Answer:

x=3, y=1

Point Form is

(3,1)

Step-by-step explanation:

help with my khan academy assignment please

Answers

Full bubble at 0, then make it go right.
I’ve attached how you would draw this...
hope it helps!

1
Identify the shape and find the area. (Round your answer to the tenths place if needed)
10
Shape
Perimeter = 17
Apothem = 4.2
Area =
NEXT

Answers

Answer:

Pentagon and I think the area is 19.89 so if you round it, that will be 19.9

When Emily arrives from school she spent a minute eating a snack then she spent 15 playing with her dog and 32 doing her chores

Answers

The question is incomplete:

When Emily arrived home from school she spent a minutes eating a snack. Then, she spent 15 minutes playing with her dog and 32 doing her chores . Finally, Emily spent 45 minutes finishing her homework. How long had Emily been home when she finished?

Answer:

Emily had been home for 1 hour and 33 minutes.

Step-by-step explanation:

In order to find the answer, first you have to add up the time she spent in each activity to find the amount of minutes she had been at home when she finished:

1+15+32+45=93

Now, you can express the 93 minutes in hours considering that one hour has 60 minutes. According to this, Emily had been home for 1 hour and 33 minutes (93-60=33).

A line has slope = 0 and goes through the point (1, 6). What is the equation of the line in slope-intercept form?

a) y = 1
b) y = 6
c) x = 1
d) x = 6

Answers

Your answer would be d x=6

Answer:

y = 6.

Step- by-step explanation:

A slope of 0 means that the line is horizontal and  would be of the form y = k.

As is pass through  the points where y = 6 ( 1, 6) :-  it is y = 6.

Pls help me I need this done . Look at picture . What is the measure of..

Answers

The anwer is 62 degrees

Step-by-step explanation:

angle x and the angle with a measure of 62 degrees are alternate exterior angles therefore they are congruent

Your local radio station is having their yearly CD and concert ticket giveaway. For one minute every 4th caller will win a CD and every 7th caller will win a concert ticket. You were the second caller to win both a CD and a concert ticket. What number caller were you?

Answers

Answer:

i was number #173

Step-by-step explanation:

Answer:

56

Step-by-step explanation:

You have to find the lcm, and that is 56!  Hope that helps.

What does S in Math means?

Answers

Step-by-step explanation:

subtract

i think this

can you help me answer this?

Answers

The answer is C i think.

m + 2 + 5mz when m= 4 and y= 10
Show your work ty

Answers

Answer:

206

Step-by-step explanation:

replace:

M(4) + 2 +5M(4)Z(10)

4 + 2 + 5(40)

4 + 2 + 200 =

206

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