a boy is 20 years old at present. How old was he 3 years ago?​

Answers

Answer 1

Answer: seven-teen

Step-by-step explanation:twenty minus three

Answer 2

The age of the boy three years ago is A = 17 years

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be represented as A

Now , the value of A is

Substituting the values in the equation , we get

The present age of the boy = 20 years

Three years ago, the boy's age would have been:

20 - 3 = 17

Hence , the boy was 17 years old three years ago.

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Related Questions

Let theta be and angle in quadrant IV that has reference pi/3. What is sin(theta)?

Answers

Given:

[tex]\theta[/tex] is an angle in quadrant IV that has reference [tex]\dfrac{\pi}{3}[/tex].

To find:

The value of [tex]\sin \theta[/tex].

Solution:

We know that only cos and sec are positive in quadrant IV and all other trigonometric ratios are negative in quadrant IV.

Since [tex]\theta[/tex] is an angle in quadrant IV that has reference [tex]\dfrac{\pi}{3}[/tex], therefore the value of [tex]\sin \theta[/tex] must be negative.

[tex]\sin \theta=-\sin \dfrac{\pi}{3}[/tex]

[tex]\sin \theta=-\dfrac{\sqrt{3}}{2}[/tex]

Therefore, the required value is [tex]\sin \theta=-\dfrac{\sqrt{3}}{2}[/tex].

What is the total Fatima paid?

Answers

A.
You have to $129.95 * 5 because 5 were purchased and that would give you $649.75 then you add delivery fee $76.20 for delivery fee.

Please please help!!!!

Answers

Answer:

4.75

Step-by-step explanation:

math question!
pls help
question is in the pic
(either answer it or can you tell how to find the answer or both pls & thxxu)

Answers

Step-by-step explanation:

use the a method called tan which to find the answer u will divide 4 divide by 2 and then you find the tan of 2 to get the answer then you find tan inverse with calculator yo get the correct answer

IK ANSWERS AREN’T CLEAR LOOK AT PHOTO!! HELP ASAP I WILL MARK BRAINIEST!

Answers

Answer:

a^2 b^7

Step-by-step explanation:

I believe this is right

In the triangle shown, determine Angle A to the nearest degree.
A
12 m
10 m
R
M

Answers

Answer:

12.............................

Answer:

12 m

Step-by-step explanation:

this  is anwer

Bella has $540 to spend at a bicycle store for some new gear and biking outfits. Assume all prices listed include tax.
She buys a new bicycle for $353.59.
She buys 3 bicycle reflectors for $4.98 each and a pair of bike gloves for $38.63.
She plans to spend some or all of the money she has left to buy new biking outfits for $49.20 each.

Write and solve an inequality which can be used to determine xx, the number of outfits Bella can purchase while staying within her budget.

Answers

Step-by-step explanation:

$540 - $353.59 = $186.41

$186.41 - $4.98 = $181.43

$181.43 - $38.67 = $142.8

She has $142.8 left and if she want to buy the outfits for $49.20 she is going to have $93.6 left

A rectangle has a length of 5cm and a height of 4cm. Find the area of the rectangle

Answers

Answer: 20cm

Step-by-step explanation: 5cm x 4cm = 20cm

Hope this Helps!

Answer:

18

Step-by-step explanation:

Helpppp Please Please pretty please help this is TIMES NO LINKS or I WILL REPORT YOU I will mark brainliest please give explanation please

Answers

Answer:

W = 15.5 in.

A = 240.25 in.^2

Step-by-step explanation:

L = 31 in.

W = 1/2 W = 15.5 in.

A = LW/2

A = 31 in. * 15.5 in. / 2

A = 240.25 in.^2

Neee help right answers please

Answers

Answer:

Step-by-step explanation:

Divided the first 2 numbers by eachother and then by four use a calculator

Answer:

1146198.07

Step-by-step explanation:

A student sells ice cream bars. Her weekly salary is given by ​, where x is the number of ice cream bars sold. Her employer determines the amount withheld for taxes using the function ​, where x is her weekly salary. Write the amount withheld as a function of the number of ice cream bars sold.​ Hint: Use composition.

Answers

9514 1404 393

Answer:

  W(x) = 0.06x +30

Step-by-step explanation:

The withholding on the student's salary is ...

  W(S(x)) = 0.10(0.60x +300) = 0.06x +30

Where x is the number of ice cream bars sold, the withholding is ...

  W(x) = 0.06x +30

Does anyone know this ??

Answers

Answer:

C

Step-by-step explanation:

because I took the test


Question 2
A forest ranger in an observation tower sees a bear 15 miles to the north. The ranger also knows
there are campers located 19 miles due west of her post.
To the nearest mile, how far are the campers from the bear?
O 24 miles
O 5 miles
21 miles
O 34 miles

Answers

Answer:

24 miles

Step-by-step explanation:

Please find attached a diagram explaining the question

this would be solved using Pythagoras theorem

The Pythagoras theorem : a² + b² = c²

where a = length

b = base

c =  hypotenuse

15² + 19²

225 + 361

586

the square root of 586 = 24 miles

If b=5 what is b3 answer?

Answers

Answer:

15

Step-by-step explanation:

We know that b=5. Therefore, b is 5. Therefore, we plug this into the expression. (5)3. 5 times 3 is equal to 15. Therefore, the answer is 15.

If this has helped you please mark as brainliest

Find the area of the figure. (Sides meet at right angles.) pls help i suck at math if you help me i can help with English or something like that thx

Answers

Answer:

28 square ft

Step-by-step explanation:

the whole rectangle is 5X8 = 40

Now subtrast 2 rectangle of 2x3

2(2x3) =   2x6 =  12

40-12 = 28

I need help asap for the math

Answers

The slope is -1/5 after using the formula m=rise over run. Reflected across the x-axis, the slope is 1/5 because the y coordinates become negative when reflected across x-axis.

D is going in the 4th quadrant. Please help

Answers

What are you asking here? Are you asking if D is the right answer? If so then I can’t see D.

look at pic 10 pts will mark brainilest

Answers

Answer:

A

Step-by-step explanation:

It’s a

Answer:

A

Step-by-step explanation:

this isa because the 2 rectangles on the net will make the sides and the triangles will finish the prism when u fold it it will be a rectangular prism plz mark me brnliest ill send u friend request

Tammy harvested pounds of nuts from her pecan tree. If she divides the nuts into pound bags, how many bags will she have?

Answers

Answer: Tammy would have 9

Step-by-step explanation:

(6 3/4) / (3/4) =

= 27/4 / 3/4

= 27/4 * 4/3

= 27/3 * 4/4

= 9

Match the shape with the correct formula for finding the volume.
1. Cone
2. Cylinder
3. Triangular Prism
4. Rectangular Prism
5. Pyramid

Answers

━━━━━━━━━━━━━━━━━━━━━━

Formula for finding the volume of cone - ⅓πr2h

Formula for finding the volume of cylinder - πr2h

Formula for finding the volume of Triangular Prism - Bh

Formula for finding the volume of Rectangular Prism - lwh

Formula for finding the volume of Pyramid - ⅓Bh

Answer:

Pyramid: 1/3 B x H Triangular: B x H Cone: 1/3 pi r^2 x H Rectangular Prism: L x W x H Cylinder: pi r^2 x H

Step-by-step explanation:


Write an equation for each situation. Then solve.
a. Karyl has x tickets for rides at the carnival. Her sister has twice as
many tickets. Together they have 18 tickets. How many tickets does
Karyl have?

Answers

Answer:

Step-by-step explanation:

Step 1: let's divide the total tickets into 2 respectively ie 18÷2=9

Step2: nw let's divede the 9 into 2 respectively and that give us 4.5. since her sister has as twice if many tickets therefore karyl has 4.5 tickets.

It takes 15 caterpillars 24 hours to eat all the leaves on the bush in Violetta's front
yard. How
many
hours would it take 18 caterpillars to eat the same bush, assuming al
caterpillars eat at the same pace?

Answers

Answer:

20 hours

Step-by-step explanation:

[tex]\frac{15}{24}[/tex]=[tex]\frac{18}{x}[/tex]

15÷18=1.2

x=24÷1.2= 20 hours

20 hours is the answer

The time taken by 18 caterpillars to eat the entire Bush in Violetta's front yard is 20 hours.

What is the time taken?

Time taken is the inverse of the rate of work.

As it is given that the time taken by 15 caterpillars to eat all the leaves on the bush in Violetta's front yard is 24 hours, therefore, the rate at which the 15 caterpillars eat the leaves can be written as,

[tex]\rm Rate = \dfrac{\text{Number of Bush That caterpillars eat}}{\text{Time taken by the caterpillars}}[/tex]

[tex]\rm Rate = \dfrac{1}{24}[/tex]

Now, as it is the rate of 15 caterpillars, therefore, the rate of a single caterpillar can be written as,

[tex]\rm Rate = \dfrac{\frac{1}{24}}{15} = \dfrac{1}{24 \times 15}[/tex]

Now, the time taken by 18 caterpillars can be written as,

[tex]\rm Time\ taken = \dfrac{Work}{Rate \times 18}\\\\\rm Time\ taken = \dfrac{1}{\dfrac{1}{24 \times 15}\times 18}\\\\Time \taken = \dfrac{24 \times 15}{1 \times 18} = 20 \ hours[/tex]

hence, the time taken by 18 caterpillars to eat the entire Bush in Violetta's front yard is 20 hours.

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What is the product?

Answers

Answer:

I believe that it is the 2nd option x(x-1)/2 but I could be wrong sorry if I am

Look at the problem below.
p + q = 17
If p = 8, what is q?
B. II
A. 25
C. 9
D. 8

Answers

Answer:

C

Step-by-step explanation:

8+q=17

17-8=9

The answer is 9

You would replace p in the equation with 8, then subtract 8 from 17 leaving you with 9

7. A city is building a fence around a rectangular playground. If the perimeter of the playground is 100 feet and the length of one side of the fence is 32 feet, what is the width of the playground?

Answers

Answer:

100-32=68

Step-by-step explanation:

there are 68 feets on the playground

The depth of a river at flood stage is marked as "O" on a tall pole in the middle of a riverbank. The pole is marked in 1-foot intervals above

and below 0 to show the current depth of the water.

Drag a value and a word to the blanks to complete the sentence.

When the water level is at the "-4" mark on the pole, the river is

feet

the flood stage.

Answers

Answer:

When the water level is at the "-4" mark on the pole, the river is 4 feet  below the flood stage.

Step-by-step explanation:

Given

[tex]Flood\ stage = 0[/tex]

Required

What does -4 represents

From the question, we can deduce that:

[tex]Above = +ve\ intervals[/tex]

[tex]Below = -ve\ intervals[/tex]

-4 belongs to the "below" category.

Hence, -4 mark represents 4 feet below the flood stage

find the reciprocal of each number 2/3, 1/7, 4 ( show work)

Answers

Answer:

A reciprocal is the fraction flipped around. So basically 3/2, 7/1, and 1/4. Since 4 is a whole number the denominator is 1. Therefore, the reciprocal is 1/4.

A truck weighs 14,000 pounds how many tons do two truck weigh

Answers

Answer:

Hey mate.....

Step-by-step explanation:

This is ur answer.....

7 ton....

Because :

1 ton = 2000 pounds

7×2000 = 14,000 pounds

Hope it helps!

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What is the volume of the sphere below?

A. 500/3 pie units 3
B.100/3 units 3
C. 25/3pie units 3
D. 125/3 pie units 3

Answers

Answer:

A. 500/3π units³

Step-by-step explanation:

The volume of a sphere is given by 4/3πr³:

4/3π5³

4/3π125

500π/3

i need help ( no links ) ( picture attached)

Answers

Answer:

120-(30+48)= 42

Step-by-step explanation:

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