50 POINTS QUICK Mary is three times as old as her son . In 12 years Mary will be twice as old as her son. How old is each of them now?

Answers

Answer 1

Answer: Mary is 36 and her son is 12; in 12 years her son will be 24 and she will be 48

Step-by-step explanation:

Answer 2

Answer:

Mary's age = 36

Son's age = 12

Step-by-step explanation:

Let x be age of Mary and y be age of her son.

According to question,

x = 3y...........(1)

And,

x + 12 = 2(y + 12)

x + 12 = 2y + 24

Replacing value of x from (1),

3y + 12 = 2y + 24

3y - 2y = 24 - 12

y = 12

And x = 3 x 12 = 36


Related Questions

Help please. It’s base times height.

Answers

Answer:

Pretty sure it's 99.

Answer:

11×9=99

99in³ is the area of the parallelogram

Find t.

Write your answer in simplest radical form.

Special right triangles

Answers

In 30-60-90 triangles the t will be 2x to which in this case will be 2sqr 2

Which graph represents the function f(x) = 3/2 (2) ^x

Answers

Answer:

There is no any graph

I have telegram account you can sent it there if you need that write in the comment below

please help I have tried over and over and can't get it​

Answers

1) -3
2) 6
3) 4
4) 2
5) 5
6) 5
7) 7
8) -3
9) 9
10) 6
11) -5
12) 0

Here are your answers may I please have the brainliest

Helppppppppppp meeeeeeeeee

Answers

Answer:

The Area is 13 sq m

Step-by-step explanation:

hope it helps you..

Answer:

22 is right answer I think

The Spanish Club has 78 members, 42 girls and 36 boys. What is the ratio of
girls to boys in the Spanish Club?
A. 6:7
B. 8:7
O C. 7:6

Answers

Answer:

C. 7:6

Step-by-step explanation:

Take your ratio 42 (G): 36 (B) and divide both numbers by six. This comes out to 7 (G): 6 (B) which is the simplest form of this ratio.

Kara’s bedroom is in the shape of a rectangle. The perimeter of her room is 50 feet. The width of her room is 12 feet. What is the length of Kara’s room?

A. 13 feet
B. 25 feet
C. 26 feet
D. 38 feet

Answers

Answer:

13 ft

Step-by-step explanation:

To find the perimeter of a rectangle you have to add the four sides of the rectangle, you have two sides and know the perimeter, this will help you find the length of her room. 12 ft is the width, add 12+12 and you have 24. The perimeter is 50 so subtract 24 from 50 and you have 26 that is the length times two, so divide 26 by 2. Now you have 13, so the length of her room is 13 feet.

Hope you understand now! :)

The answer is 13 feet (A)

2+262+77+8+9+9+8+6+5+5+4+5+56+6+6+6+8+8+65+6+6+8+8​

Answers

Answer:

583

Step-by-step explanation:

Father shared $90 among his three children. Liam, Darreon and Jessie. Jessie gets $10
more than Darreon who gets $10 more than Liam. How much did Jessie and Liam
get
altogether​

Answers

Jessie gets $40
Darreon gets $30
Liam gets $20

So Jesse and Liam together get $60

How many meters are the
Convert 5.2kg to grams.

Answers

Answer:

5.2kg = 5,200 grams

Step-by-step explanation:

I hope it helps

The logarithm of a number to the base V2 is k. What is its logarithm to the base 2v2 ?​

Answers

Answer:

[tex]log_{2\sqrt 2} X = \frac{1}{3}k[/tex]

Step-by-step explanation:

Given

Let the number be X

From the first statement, we have:

[tex]log_{\sqrt 2} X = k[/tex]

Required

Find [tex]log_{2\sqrt 2} X[/tex]

[tex]log_{\sqrt 2} X = k[/tex]

using the following law of logarithm

[tex]log_ab = n, b=a^n[/tex]

So:

[tex]log_{\sqrt 2} X = k[/tex]

[tex]X = \sqrt{2}^k[/tex]

Substitute: [tex]X = \sqrt{2}^k[/tex] in [tex]log_{2\sqrt 2} X[/tex]

[tex]log_{2\sqrt 2} X = log_{2\sqrt 2} ( \sqrt{2}^k)[/tex]

[tex]log_{2\sqrt 2} X = klog_{2\sqrt 2} \sqrt{2}[/tex]

Apply the following law:

[tex]log_ab = \frac{log\ b}{log\ a}[/tex]

[tex]log_{2\sqrt 2} X = k\frac{log\ \sqrt 2}{log\ {2\sqrt 2}}[/tex]

Express the square roots as power

[tex]log_{2\sqrt 2} X = k\frac{log\ 2^\frac{1}{2}}{log\ {2 * 2^\frac{1}{2}}}[/tex]

[tex]log_{2\sqrt 2} X = k\frac{log\ 2^\frac{1}{2}}{log\ {2^\frac{3}{2}}}[/tex]

using the following law of logarithm

[tex]log_ab = n, b=a^n[/tex]

[tex]log_{2\sqrt 2} X = k\frac{\frac{1}{2}log\ 2}{\frac{3}{2}log\ 2}}[/tex]

[tex]log_{2\sqrt 2} X = k\frac{\frac{1}{2}}{\frac{3}{2}}}[/tex]

Rewrite as:

[tex]log_{2\sqrt 2} X = k * \frac{1}{2} \div\frac{3}{2}[/tex]

[tex]log_{2\sqrt 2} X = k * \frac{1}{2} *\frac{2}{3}[/tex]

[tex]log_{2\sqrt 2} X = k * \frac{1}{1} *\frac{1}{3}[/tex]

[tex]log_{2\sqrt 2} X = \frac{1}{3}k[/tex]

PLEASE HURRY⚠️⚠️

How do you find the length of an unknown leg in a right triangle?

Answers

Answer:

by measuring in feet

Step-by-step explanation:

its the easiest way to find what your looking for

Answer:

You can find the length of an unknown leg using the Pythagorean theorem

Step-by-step explanation:

[tex]a^2+b^2=c^2[/tex]

or

[tex]c^2-a^2=b^2[/tex]

or

[tex]c^2-b^2=a^2[/tex]

note c = hypotenuse and b and a = legs

Of 75is90 =120 true or false

Answers

Answer:

False

Step-by-step explanation:

HELPPP I MAKE BRAINLIESTT

A seamstress charges a $5 fee per garment, plus $15 for each hour of work that the garment requires. The graph below shows the cost of having a single garment fixed by the seamstress, according to the number of hours of work that are needed.



Which linear function models the data?

A. c(t) = 5t

B. c(t) = 15t

C. c(t) = 5 + 15t

D. c(t) = 15 + 5t

Answers

Answer:

C. c(t) = 5 + 15t

Step-by-step explanation:

Well because the initial fee is $5, the answer must have the value of 5 without a variable next to it because this is the y-intercept.

(Only the slope will have the t next to it.)

Because $15 is charged EACH HOUR this would be the slope because there is a constant increase

Therefore c(t) = 5 + 15t

Answer:

C. c(t) = 5 + 15t

Step-by-step explanation:

She charges $15 per hour, so each hour (represented by "t") she earns 15 dollars. She also charges a $5 fee per germent. So she would get $5 plus 15 times however many hours she worked. So your answer would be c(t) = 5 + 15t.

calculate the number of terms in the following arithmetic sequence. 6;1;-4;-9....... -239​

Answers

Answer:

50

Step-by-step explanation:

Given

first term (a) = 6

Common Difference (d) = 1 - 6 = - 5

Last term (tn )= - 239

Number of terms (n) = ?

We know

Tn = a + ( n - 1 ) d

- 239 = 6 + (n - 1) (-5)

- 239 = 6 - 5n + 5

- 239 = 11 - 5n

5n = 11 + 239

5n = 250

n  = 250 / 5

n = 50

The number of terms is 50.

What would be the volume to this equation?

Answers

Answer:

you times 11.3 by 15.1 then times it by 18.9

can you help me? I am stuck

Answers

Answer:

27

Step-by-step explanation:

what is 111/4?

27.75

But they asked exact, or no remainders. So the whole number is 27

The greatest number of stalls he needs is 28.

Since it says "the greatest, I rounded 27.75 up, getting 28.

Which condition would prove ΔDEF ∼ ΔJKL?

Answers

Step-by-step explanation:

DE : JK

= 21 : 7

= 1 : 3

#CMIIW

The condition that proves congruent of two given triangles ΔDEF ∼ ΔJKL would be option A; DE : JK.

What is the congruent triangle?

Two triangles are said to be congruent if the length of the sides is equal, a measure of the angles are equal and they can be superimposed.

we have given proof two triangles congruent by the postulate of SSS.

Since two corresponding sides of these triangles are congruent so additional third side should also be congruent to prove both the triangles congruent.

AC ≅ DF will complete the SSS property to prove both the triangles are congruent.

DE : JK

= 21 : 7

= 3 : 1

Learn more about triangle here:

https://brainly.com/question/342881

#SPJ2

A party rental company has chairs and tables for rent. the total cost to rent 5 chairs and 3 tables is $ 27. The total cost to rent 2 chairs and 12 tables is $81.

cost to rent each chair=

cost to rent each table=​

Answers

Answer:

14 and 16

Step-by-step explanation:

nryjettutwi523iwtietiitqy25

3. 15 is what percent of 75?.
Show your work
Please hurry this is 100% of my grade and I have an F in math please

Answers

Answer:

20%

Step-by-step explanation:

75 divided by 5 equals 15

Simple form:

15+15+15+15+15=75  There are 5 15's.

I hope this helps and your grade gets better. :)

Find the sum:(12x-14)+(2x+3)

Answers

Answer:

x= -0.785

Step-by-step explanation:

12x plus 2x equals 14x

negative 14 plus 3 equals negative 11

negative 11 divided by 14 equals x

x^4 − 3x^2 − 90 x= -3

Answers

Answer:

-36

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Step-by-step explanation:

Step 1: Define

x⁴ - 3x² - 90

x = -3

Step 2: Evaluate

Substitute in x:                                                                                                  (-3)⁴ - 3(-3)² - 90Exponents:                                                                                                        81 - 3(9) - 90Multiply:                                                                                                             81 - 27 - 90Subtract:                                                                                                            54 - 90Subtract:                                                                                                            -36

math is so hard:

For which function is the ordered pair (4, 12) not a solution?

1. y = 3 x
2. y = 16 - x
3. y = x + 8
4. y = 8 - x

what’s the answer?

Answers

Answer:

4. y = 8 - x is the right answer

Answer:

4. y = 8 - x

Step-by-step explanation:

The question asks for which function is the ordered pair not a solution?

We need to substitute the ordered pair (4, 12) into x and y.

1. 12 = 3(4) (correct)

2. 12 = 16 - 4 (correct)

3. 12 = 4 + 8 (correct)

4. 12 = 8 - 4 (incorrect)

Therefore, the solution to your question is option 4.

PLEASE HELP I WILL MARK BRAINLIST!!

Answers

14: [tex]\frac{1}{2} = \frac{8}{1}[/tex]    [tex]\frac{x}{y} = \frac{56}{1}[/tex]

56/8 = 7 so multiply 1/2 by 7/1 to get the unidentified fraction "x/y"

1/2 · 7/1 = 7/2 or 3 1/2

15.  [tex]\frac{2}{5} = \frac{x}{100}[/tex]

to get from 100 to 5, you would divide by 20, so to solve for x, multiply 2 by 20, to get a product of 40.

40/100 = 40% or D

16. [tex]\frac{3}{5} = \frac{12}{x}[/tex]

A

in the graph above, what's the distance between (-1, -4) and (-1, 5)

Answers

Answer:

9  

Step-by-step explanation:

5-(-4) =

5 + 4 = 9

Hope that helps!9

2. En un concierto hay 432 personas. Si sabemos que hay 48 mujeres más que hombres,
¿Cuántos hombres y cuántas mujeres hay?

Answers

m = 48+x
h=x
x+48+x = 432
2x +48= 432
x=192
mujeres =240
hombres= 192

kiaras monthly rent increased from $425 to $480 whats the percent increase in her rent rounded to the nearest tenth of a percent​

Answers

Answer:

1.1

Step-by-step explanation:

480/425=1.129

There was a 1.129 rent increase but you round to the nearest tenth so 1.1

PLS HELP ASAP AAA TYSMM
The coordinates of the vertices of a triangle are A(1,2), B(4,5), and C(4,2). Find triangle A’B’C’ by translating triangle ABC 2 units to the right and 3 units down. Write: (1) the algebraic rule that describes the transformations and (2) the coordinates of A’B’C’.

Answers

Answer:

Parallelogram ABCD was translated to parallelogram A'B'C'D'. ... When ΔRST is translated 4 units down, what is the coordinate of T'? ... C.​ ​7 units left and 5 units down. B. 7 units right and 5 units up. D. ... If the triangle DOG with coordinates (2, 2), (2, 10), (8, 6) is translated six units left and three units.

Step-by-step explanation:

y o u s h a l l g e t 50 p o i n t s
i f y o u a n s w e r t h i s

Answers

Answer: 1.) 10

Step-by-step explanation:

-4 + 4 = 0

0 + 6 = 6

6 + 4 = 10

Answer:

3. Z=10 4. B=60

Step-by-step explanation:

For number 3 we work backwards. So, 6 - (-4) would equal 10. To check this -4  + 10 = 6. For number 4, we also work backwards, so 12 x 5 = 60. To check this 60/5 = 12. So z = 10 B = 60.

When conducting research on color blindness in​ males, a researcher forms random groups with five males in each group. The random variable x is the number of males in the group who have a form of color blindness. Determine whether a probability distribution is given. If a probability distribution is​ given, find its mean and standard deviation. If a probability distribution is not​ given, identify the requirements that are not satisfied.
x P(x)
0 0.669
1 0.278
2 0.048
3 0.004
4 0.001
5 0.000
1. Does the table show a probability distribution?
A Yes, the table shows a probability distribution.
B. No, the random variable x's number values are not associated with probabilities.
C. No, not every probability is between O and 1 inclusive.
D. No, the sum of all the probabilities is not equal to 1.
E. No, the random variable x is categorical instead of numerical.
2. Find the mean of the random variable x.
a. mu = male(s).
b. the table does not show a probability distribution.
3. Find the standard deviation of the random variable x.
a. infinity = male(s).
b. the table does not show a probability distribution.

Answers

Answer:

1. Yes, the table shows a probability distribution.

2. 0.39 males.

3. 0.6082 males.

Step-by-step explanation:

The random variable x is the number of males in the group who have a form of color blindness. Determine whether a probability distribution is given:

A probability distribution is given if the sum of all probabilities is 1.

We have that:

0.669 + 0.278 + 0.048 + 0.004 + 0.001 + 0 = 1

So yes, the table shows a probability distribution.

2. Find the mean of the random variable x.

We multiply each value by its probability. So

[tex]\mu = 0*0.669 + 1*0.278 + 2*0.048 + 3*0.004 + 4*0.001 + 5*0.000 = 0.39[/tex]

The mean is 0.39 males.

3. Find the standard deviation of the random variable x.

Square root of the subtraction squared of each value and the mean, multiplied by its respective probability. So

[tex]\sigma = \sqrt{0.669*(0-0.39)^2+0.278*(1-0.39)^2+0.048*(2-0.39)^2+0.004*(3-0.39)^2+0.001*(4-0.39)^2+0.000*(5-0.39)^2} = \sqrt{0.3699} = 0.6082[/tex]

The standard deviation is of 0.6082 males.

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