Resuelva y responda a la pregunta: Andrés es mayor que su hermano Alex. Dentro de 3 años, la edad de Alex será la edad que tiene ahora Andrés y, dentro 9 años, la edad de Andrés será el doble de la edad que Alex tiene ahora. ¿Qué edades tienen los hermanos?

Answers

Answer 1

Answer:

Andrés tiene 15 años y Alex tiene 12 años.

Step-by-step explanation:

Como el enunciado dice que dentro de 3 años, la edad de Alex será la edad que tiene ahora Andrés puedes escribir una ecuación que indique que la edad de Andrés es igual a la edad de Alex más 3:

x=y+3, donde:

x es la edad de Andrés

y es la edad de Alex

Además, como se indica que dentro 9 años, la edad de Andrés será el doble de la edad que Alex tiene ahora puedes escribir una ecuación que indique que la edad de Andrés más 9 es igual a dos veces la edad de Alex:

x+9=2y

Ahora puedes reemplazar x=y+3 en x+9=2y y despejar y:

y+3+9=2y

12=2y-y

y=12

Finalmente, puedes reemplazar el valor de y en x=y+3 para encontrar el valor de x:

x=y+3

x=12+3

x=15

De acuerdo a esto, la respuesta es que Andrés tiene 15 años y Alex tiene 12 años.


Related Questions

pleas help meeeeeeeee !!

Answers

So for 9, to graph all you need to do is start at the origin (0,0) and go up 4 and over (right) 1.

20. 64% of the people at the movie theater bought popcorn in one weekend. For the next weekend, if the movie theater expects 125 people, then how many should be expected to buy popcorn?

Answers

Answer:

26

Step-by-step explanation:

20.64 divided by 100 then multiplied by 125 which will result in you receiving the answer 25.8 but I rounded it off to 26

A farmer sells 7.1 kilograms of pears and apples at the farmer's market. 1/4 of this weight is pears, and the rest is apples. How many kilograms of apples did she sell at the farmer's market?

Answers

Answer:

your answer gonna be 4 1/10 that's your answer

5.325kg because 3/4 of the weight is apples and you take 1/4 away from 7.1. 1/4 of 7.1 is 1.775

9+10=?
I hope ya'll understand this

Answers

Answer:

19?

Step-by-step explanation:

Answer:

9+10=21

truly its 19 but

9+10=21

Step-by-step explanation:

The table shows a students results from spinning the pointer 30 times. Find the experimental probability that the pointer lands in a section with a number greater than or equal to 3.

Answers

Answer:

The answer is 8/15

hope it helps you

The Raidius of a spherical globe is 9 inches what is the volume of the globe? ​

Answers

Answer: 3053.63


To get this you have 4/3 times pie times r3

A nursery owner buys 7 panes of glass to fix some damage to her greenhouse. The 7 panes cost
$15.05. Unfortunately, she bredks 3 more panes while repairing the damage. What is the cost of
another 3 panes of glass?

Answers

Answer:

Its 6.45

Step-by-step explanation:

we first need to know how much is one pane of glass so i divide

15.05÷ 7 and got $2.15

so each one pane of glass is $2.15

than i multiply 2.15 x 3 and got 6.45

So the cost is 6.45


Word Problem #2
On one night, a scientist needs to determine the
distance she is away from the International Space
Station. At the specific time she is determining this the
space station distance they are both on the same line of
longitude 77' E. Furthermore, she is on a latitude of 29°
N and the space station is orbiting just above a latitude
of 61.4° N. In short, the central angle between the two
is 32.4°. If the Earth's radius is 3959 miles and the
space station orbits 205 miles above the surface of the
Earth, then how far is the scientist away from the space
station?
205 mi
3959 miles
324 CE
A
3959 miles

Answers

324 cececdcececececece

25% of what number is 9​

Answers

Answer:

36

Step-by-step explanation:

How can you convince someone that 8^0=1?

Answers

[tex]\huge\text{Hey there!}[/tex]

[tex]\large\textsf{Fun fact: ANY NUMBER that is raised to the power of 0 is automatically}\\\large\textsf{equal to 1.. because the number to the 0 power is not a product of any}\\\large\textsf{number whatsoever, which why it has an understanding its recognition is 1. }[/tex]

[tex]\large\text{So, you can briefly tell them that for better understanding of exponents of}\\\large\text{0 that equals to 1}\uparrow[/tex]

[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

AYUDAAAAA!!!
Partes de una cantidad
Es para hoy en la tarde porfis:-|​

Answers

Answer:

I don't speak Spanish sorry༼ つ ◕_◕ ༽つ/_ \

I will mark brainliest if you help me out and give me the correct awnser! Please help me with dot plotting.

Answers

Well, the median is 5

select the correct answer if not watch out for your back mate​

Answers

Answer:

c

Step-by-step explanation:

Can someone please help me please I really need help please help me.

Answers

Answer:

Step-by-step explanation:

I can't get to act correctly either.

The answer is 1 day and 7 items.

Ariana

y = 5x + 2

Julie

y = 7x

The ys have to be the same so equate the right hand side.

7x = 5x + 2                      Subtract 5x from both sides.

7x - 5x = 5x - 5x + 2

2x = 2                             Divide by 2

2x/2 = 2/2

x = 1

1 day

7 items

!!!!!Please do step by step when answering!!!!!

Answers

Answer:

surface area =0.1357

Step-by-step explanation:

first, find the triangle area

to find use triangle area= base x height divided by 2

so .18 x .23

=0.0414

divided by 2

= .0207

multiplty 0.0414 by 4 because theres a total of 4 triangle sides

.0207 x 4 = 0.0828

now find the area of the square on the bottom

area= base x height

.23 x .23 = 0.0529

now add the two areas together

0.0529 + 0.0828= 0.1357

How much should Josea leave for the tip?
Reminder: The total bill was $38. She wanted to leave
a 15% tip.

Answers

Answer: soo if the bill is $38

then 15% times 100 = 0.15

38.00 x 0.15 = $5.7

Step-by-step explanation:

Answer:

$5.7 as a tip

find the value of each variable

Answers

Answer:

x=12.124

y=14

Step-by-step explanation:

tan(30)= 7/x

x= 7/tan(30)

sin(30)= 7/y

y= 7/sin(30)

what is the formula to find the vertex of an exponential function?​

Answers

Answer:

formula: x = -b/2a

Step-by-step explanation:

What is the measure in degrees of an angle that is supplementary to a 98
degree angle?

Answers

Answer:

82°

Explanation:

180 - 98 = 82°

The quotient of a number and -6 decreased by 2, is 10. FInd the number

Answers

Answer:

[tex]x = 48[/tex]

Step-by-step explanation:

Quotient means what you get when you divide a number by another number.

What we can do is make an equation using the information given, which turns out to be this:

[tex](\frac{x}{6}) - 2 = 10[/tex]

Add 2.

[tex]\frac{x}{6} = 8[/tex]

Multiply by 6.

[tex]x = 48[/tex]

Hamburger Heaven is having a lunch special where customers buy one 1/4 pound cheeseburger and get one free. If they set aside 114 2/3 pounds of meat, how many -pound cheeseburgers can they make?

Answers

Answer: 459 cheeseburgers

Step-by-step explanation:

To find out the number of cheeseburgers that can be made, divide the amount of meat set aside by the amount of meat it takes to make one cheeseburger.

The amount of meat they have is:

= 114²/₃

= 344/3

Number of cheeseburgers is:

= 344/3 ÷ 1/4

= 344/3 * 4/1

= 1,376 / 3

= 458.67

= 459 cheeseburgers

Wich measurement is the closest to the area of the triangle in square centimeters???? :(

Answers

Jfkkdkdjemaaj
Dndndjjfkf
Jfkkfjf
Jfkkf

No links! Please!!

Factor 28x+12y using the GFC

Answers

Answer:

4(7x + 3y)

Step-by-step explanation:

28x+12y using GCF(greatest common factor)

gcf = 4

4(7x + 3y)

Answer:

4(7x+3y)

Step-by-step explanation:

28x+12y

Factor out the greatest commom factor  "4"

4(7x+3y) is the answer

Question Help
In the figure to the right, lines that appear to be tangent are tangent, and is the center of the circle.
What is the value of x?

Answers

Answer:

sorry

where is the figure

Anybody please help me

Answers

I believe the answer is a translation 4 units left and 1 unit up

What are the zeros for 3x^2 - 17x = -10? Below, you need to choose the correct factors and the correct zeros.

Answers

Answer:

Step-by-step explanation:

3x²-17x=-10

3x²-17x+10=0

3x²-2x-15x+10=0

x(3x-2)-5(3x-2)=0

(3x-2)(x-5)=0

3x-2=0,x=2/3

x-5=0,x=5

Please helppppp
In GHI the measure angle I = 90° the measure of angle G = 5° and IG = 57 feet. Find the length of GH to the nearest tenth of a foot

Answers

Answer:

GH = 57.2 feet

Step-by-step explanation:

Given the following

m<I = 90 degrees

<G = 5 degrees

IG = 57 feet

Required

Length of GH

According to the data given

GH is the hypotenuse

iG is the adjacent side to m<G

Cos theta = adj/hyp

Cos 5 = IG/GH

Cos 5 = 57/GH

GH = 57/cos 5

GH = 57/0.9962

GH = 57.2 feet

Answer: 57.2 feet

Step-by-step explanation:

Gary is a regular customer at a coffee shop. The probablity that Gary orders a bagel is 85% . If Gary goes to the coffee shop 500 times, which is the best estimate for the number of times Gary will NOT order a bagel?

Answers

The answer will be 425................

Please help! I need the work for this.
log(3x-2)=3
The answer is 334 I just need to know how to solve it.

Answers

Answer:

x=334

Step-by-step explanation:

log(3x-2)=3

log(3x-2)=3

3x-2=10^3

3x-2=1000

3x=1000+2

3x=1002

x=1002/3

x=334

What theorem shows ACE = BCD

Answers

Answer:

SAS

Step-by-step explanation:

in two triangles

if EC=DC

AC =BC

M<ECA =M<DCB "V.O.A"

THEN triangle ACE = triangle BCD

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