si sna es 12 años menor que eva y dentro de 7 años la edad de eva es el doble que la edad de ana que edad tiene eva​

Answers

Answer 1

Responder:

17

Explicación paso a paso:

Dejar ;

Edad de Eva = x

Edad de Ana = x - 12

Dentro de los 7 años de la edad de Eva, la edad de Ana será el doble

x + 7 = 2 (x - 12 + 7)

x + 7 = 2 (x - 5)

x + 7 = 2x - 10

x - 2x = - 10 - 7

-x = - 17

x = 17

Por lo tanto, Eva tiene 17 años.


Related Questions

PLEASE HELP ME WITH ME MATH In a survey of 3500 people who owned a certain type of​ car, 1750 said they would buy that type of car again. What percent of the people surveyed were satisfied with the​ car?

Answers

Answer:

50%

Step-by-step explanation:

3500 divided  by 1750 is 2 which is equal to 50%

I kind of don’t get this could someone explain and answer this question I would really appreciate :)

Answers

Answer:

its the fourth one

sts3ps oe

Answer:

the first picture A.

Step-by-step explanation:

Vertical angles are just two angles that lie across from each other. The other 3 pictures are referring to adjacent angles which are two angles that lie directly next to each other.

Please someone help me graph the table on to the graph and tell me if it is a linear and nonlinear and explain how it is a linear or a nonlinear

Answers

It is linear because when you graph the points on the graph, they create a straight line. (I included the picture of the graph) let me know if this answers your question :)

Answer:

linear

Step-by-step explanation:

m = [tex]\frac{difference-- between-- y-coordinats}{difference-- between-- x-coordinats}[/tex] = [tex]\frac{-4}{1}[/tex] = - 4 ⇒ [1 - 1, 10 - ( - 4)] = (0, 14) is y-coordinate.

equation of the function is y = - 4x + 14 ⇒ function is linear

Solve -2(5x – 3) = 41.

Answers

Answer:

Divide both sides by the numeric factor on the left side, then solve.

Exact Form:

x=−7/2

Decimal Form:

x=−3.5

Mixed Number Form:

x=−3 1/2

Step-by-step explanation:

Answer:

- 3.5

Step-by-step explanation:

hope this helps :)

Find the value of ​f(​3) for the function. f(3)=-5(x+5)

Answers

Answer:

Step-by-step explanation:

f(3)=-5(x+5)

     =5(3) +5

     =15+5

f(3)      =20

8/6+(-9/5) . . . . . . . .. .. . .. . . . .. . .. .

Answers

Answer:

To add fractions, find the LCD and then combine.

Exact Form:

-7/15

Decimal Form:

−0.46

by mathematical induction 1.2²+2.3²+.....+n(n+1)(n+2)(3n+5)/12​

Answers

Step-by-step explanation:

1.2+2.3+3.4+⋯+n(n+1)=∑k=1nk(k+1)

=∑k=1n(k2+k)

=∑k=1n(k2)+∑k=1n(k)

=n(n+1)(2n+1)6+n(n+1)2

=n(n+1)6(2n+1+3)

=n(n+1)6(2n+4)

=n(n+1)6[2(n+2)]

=n(n+1)(n+2)3

Let's assume your process yields products with a mean diameter of 12.50mm and σ = 0.010mm. If the specification calls for a range of 12.480mm - 12.530mm, what percentage of parts will have a diameter within these limits?

Answers

Answer:

There is a 97.59% that diameter of the product will fall in the specified range.

Step-by-step explanation:

Let X be the r.v. the diameter of a product

X~N(12.5, (0.010)²)

P(12.48 < X < 12.53) = P(X < 12.53) - P(X < 12.48)

Convert the x-values to corresponding z-values

[tex]Z_{1} = \frac{12.48 - 12.50}{0.01} = -2\\\\Z_{2} = \frac{12.53 - 12.50}{0.01} = 3\\\\[/tex]

Then, using the standard normal distribution cumulative probability tables:

[tex]P(X < 12.53) - P(X < 12.48) = P(Z < 3) - P(Z < -2)\\\\= P(Z < 3) - (1 - P(Z < 2))\\\\= 0.9987 - (1 - 0.9772)\\\\= 0.9987 - 0.0228\\\\= 0.9759[/tex]

Find the lcm of 15,30 and 105

Answers

Answer:

210

Step-by-step explanation:

15=3•5
30=2•3•5
105=3•5•7

thus the lcm of 15, 30, 105 is 2•3•5•7=210

i need help???? ???​

Answers

Answer:

Upper Quartile

Step-by-step explanation:

The third quartile (Q3) is the middle value between the median and the highest value of the data set. It is also known as the upper quartile or the 75th empirical quartile and 75% of the data lies below this point.

What is unit rate of 1/3 and 1 1/2​

Answers

The correct answer is 12.5

A pediatrician prescribes an infant patient 2.5 mL of Vistaril bid for 10 days. The label

on the medication indicates that the bottle contains 25mg/5mL of the oral suspension.

How many teaspoons full should the infant receive daily?

Answers

Answer: 1 teaspoon

Step-by-step explanation:

The calculation on the number of teaspoons full that the infant should receive daily should be:

Ordered dose = 2.5 ml bid and this should be given twice a day.

Since it's take twice, the total dose for the day will be:

= 2.5 × 2

= 5.0ml

Since 1 teaspoon is equal to 5ml, it means that the teaspoon that the infant should receive daily is 1 teaspoon.

Multiply 1 4/5 * 1 ???

Answers

Answer:

9/5 or 1 4/5

Step-by-step explanation:

You’re welcome :)

Answer:

your answer will come to be 1.8

A bike path is 3 miles long. there are distance markers every path one fourth mile to the end of the path. which number line correctly models this situation and the total number of distance markers?

Answers

Given :

A bike path is 3 miles long. there are distance markers every path one fourth mile to the end of the path.

To Find :

Which number line correctly models this situation and the total number of distance markers.

Solution :

It is given that their are markers every 1/4 part of mile.

So, their are 4 markers per mile.

Numbers of markers in 3 miles long path is :

[tex]n = 3\times 4\\\\n = 12[/tex]

Therefore, the total number of distance markers in 3 mile path is 12.

Hence, this is the required solution.

I need help help me please

Answers

Answer:

The answer is line A

Step-by-step explanation:

It is Because try putting 0 in th eeqaution you will get 1 on LHS

Answer:

Line A

Step-by-step explanation:

The given function can also be seen as the equation of the line in slope-intercept form:

[tex]y=mx+b[/tex]

Where:

m is the slopeb is the y-interceptx and y are corresponding coordinate points that lie on the line (x,y)

Since all the lines are parallel, they all have the same slope. All we need to do is find the one that has a y-intercept of 1. The y-intercept is where x=0.

Line A: [tex]b=1[/tex]

Line B: [tex]b=0[/tex]

Line C: [tex]b=-1[/tex]

Line D: [tex]b=-4[/tex]

The only line with a y-intercept is Line A.

:Done

the sunshine Club collected 524 cans for a canned food drive. the cans were then split up equally into 8 boxes.
Part A how many can were in each box?
Part B how many can were left over after the boxes were filled?

Answers

524/8=65.5

There were 65 cans in each box.

65•8= 520
524-520=4
There were 4 cans left over

A bakery made 9 cakes using 3 bags of flour. The bakery uses the same relationship between cakes made and the amount of flour used to make all of their cakes. Which table of values shows the relationship between the number of cakes the bakery makes to the number of bags of flours the bakery uses?

Answers

Answer:

c = 3b

Step-by-step explanation:

9 cakes proportional to 3 bags of flower

cake = k(bag)

c = kb

9 = k(3)

k = 3

c = 3b

you didn't send any table of values but this is the relationship between the cakes and flour, you can use it.

please mark brainliest if you like the answer

Jamie recorded vehicle turning choices at the intersection near his house. He organized the results in the table shown.



Based on Jamie’s results, what is the probability of a vehicle turning versus continuing straight?

Answers

Answer:

There is no table or picture and nice Uzumaki clan picture.

I know this question so here

It is less likely the vehicle will turn left asgoing straight

Step-by-step explanation:

plz mark brainliest

When Brandon went bowling, it cost $4.95 per game, plus a one-time fee to rent the shoes. Brandon played 5
games and paid $32. Write and solve a linear equation to find the cost to rent the shoes.

Answers

7.25 the shoes I think

(100) POINTS NO JOKE!!!!Which ratios are equivalent to 7

3

? Check all that apply.


(A) 27:21

(B) 28 to 12

(C) 56/ 24

(D) 63 to 27

(E) 9/21

Answers

Answer:

B, C, D

Step-by-step explanation:

If simplified, 28:12 becomes 7:3, as 28 is evenly divisible by 7 and 12 is easily divisible by 3. This applies to 56:24 and 63:27 as well.

For example:

(28:12)/ 4 = 7:3

It’s C B and D, I just answered this one on my test! C:

4^4÷4^7 as a fraction

Answers

Answer: multiply it by the bisector of the photosynthesis.

obviously

Step-by-step explanation:

How do you write 8.69 × 10^-5 in standard notation?​

Answers

Answer:

8.69*10^-5 in standard notation is, 0.0000869

Step-by-step explanation:

Please answer for me domain and range

Answers

There’s no equation or picture?

At his birthday party, Mr Green would not directly tell how old he was. He said, "If you add the year of my birth to this year, subtract the year of my tenth birthday and the year of my fiftieth birthday, then add my age, the result is 122". How old is Mr Green

Answers

Answer:

61 years old in the year 2020

Step-by-step explanation:

Let us assume the question was asked in the year 2020, that is this year

Say that Mr. Green was born in year x

The mathematical expression for his statement is given as

[tex]x + 2020 - (x + 10 + x + 50) + (2020 - x) = 122[/tex]

Solve for x

x + 2020 + 2020 - x - x - 60 - x = 122

4040- 122- 2x = 0

3918= 2x

divide both sides by 2

3918/2= x

x=1959

He was born in 1959, so now

he is (2020-1959)

=61 years old.

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP

Answers

W=10


Explanation:

First you need to find the area of the triangle. To do that you do BH*0.5
So- 8*6*.5
And you get- 24
So if the area of of the rectangle is 5 times the size of the area of the triangle then you do 5*24 and get 120
And since we know 12 is one of the sides and to find area of a rectangle u do L*W, all you would do is 120/12 and you get 10

How many calendars did the Mayans have

Answers

i’m pretty sure it’s two

Answer:

three ( Long Count, Tzolkin, Haab )

Step-by-step explanation:

3.
Determine the amplitude (A), period (P) and phase shift (PS) of the function
f(x) = tan (2x + 1).
A = 1, p = ,PS = (2:0)
A = 1, P = 27, PS =
o
s = (2)
A = 1, p = 5, P = (1,0).
A = 1, P = 2.PS = (6, 1)

Answers

Answer:

for f(x)=tan(2x+1)

Amplitude: None

Period: pi/2

phase Shift: -1/2(1/2 to the left)

20 POINTS N BRAINLIEST 16. Alun has a part-time job working as a bus boy at a
local restaurant. He earns $34 a night plus 5% of
the tips.
a) Write an equation for Alun's total earnings,
E dollars, when the tips are t dollars.
b) What will Alun earn when the tips are $400?
Explain your strategy.
c) What were the nightly tips when Alun earned
$64? Explain your strategy.

Answers

Answer:

a)E=0.05t+34, b)E=54 dollars, c)t=600 dollars

Step-by-step explanation:

a) Alun's earn equation is

E=0.05t+34

b) when t=400, then

E=0.05(400)+34

E=20+34

E=54

c) when E=64, then

64=0.05t+34

hence

0.05t=64-34

0.05t=30

[tex]t=\frac{30}{0.05}[/tex]

t=600

Joe has saved $30. He earns $7.50 per hour at his job. He plans to buy a plane ticket to Florida for $300. Enter the minimum number of hours Jon must work in order to buy the plane ticket to Florida.

Answers

Answer:

30 hours

Step-by-step explanation:

300 - 30

270/7.5

fill in the blanks on the Trapezoid ​

Answers

i’ll put the blanks in () so,,
2x+ 12 + (3y)
(2)x+(162)
x=(9)
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