Five years ago mean age of a family was 25 years. What is the present mean age of the family?​

Answers

Answer 1

Answer:Let the number of family members be 'x'

Let the number of family members be 'x'the average age of the family members 5 years ago is 25 years so the sum of age of all family members 5 years ago =25x the sum of age of these family members now and after 5 years elapsed =25x (these added 5 years no of family members) =25x+5x=30x Sum of ages =30x no. family members be x

Let the number of family members be 'x'the average age of the family members 5 years ago is 25 years so the sum of age of all family members 5 years ago =25x the sum of age of these family members now and after 5 years elapsed =25x (these added 5 years no of family members) =25x+5x=30x Sum of ages =30x no. family members be xTherefore, current, average age = sum of ages/no. of members = 30x/x=30


Related Questions

In Triangle UVW, the measure of Angle W=90", WU = 35 feet, and UV = 92 feét. Find the
measure of Angle U to the nearest tenth of a degree.

Answers

Answer:

67.6

Step-by-step explanation:

Can someone please give me the answers for brilliant

Answers

Answer:

1. 5 + (-2), 5 - 2, and 3

2. 7 + 2

Step-by-step explanation:

1. If we look at the model, there are 5 positive circles and 2 negative circles. This means that we can write it in :-

5 + (-2) 5 - 23 --> *5 - 2 = 3*

2. It asked for an equivalent to 7 - (-2). Remember that negative and negative would be positive. So, it would become 7 + 2.

I would appreciate if you give me the brainlist or not. Hope this helps and stay safe, happy, and healthy, thank you :) !!

m^3 - (n + 6 • m) + 4n ; m = 2, n = 8

Answers

Answer:

20

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

m³ - (n + 6 · m) + 4n

m = 2, n = 8

Step 2: Evaluate

Substitute in variables:                                                                                     2³ - (8 + 6 · 2) + 4(8)(Parenthesis) Multiply:                                                                                      2³ - (8 + 12) + 32(Parenthesis) Add:                                                                                            2³ - 20 + 32Exponents:                                                                                                        8 - 20 + 32Subtract:                                                                                                            -12 + 32Add:                                                                                                                   20

Adrianna has a garden where she measured the height of a sunflower plant. on the first day it was 1.25 m tall, after 2 weeks it grew by 0.32 m
WHAT IS THE HEIGHT OF THE SUNFLOWER PLANT?
pls answer will give brainlist

Answers

Answer:

The height of the sunflower plant is 1.57 meters.

Step-by-step explanation:

Initially, the height of the sunflower plant was of 1.25 m.

Then, it grew by 0.32 m, that is, we have to add 0.32 m to the height.

Sum of decimals:

Dot below dot, add normally. So

 1.25

+0.32

---------

1.57

So

The height of the sunflower plant is 1.57 meters.

Old Faithful in Yellowstone National Park has a predictable eruption time. The park
rangers use a formula that takes into account the length of the previous eruption and
has proven to be accurate to plus or minus 10 minutes for 90% of the time.
a.
what is the eruption interval?
b what does 90% of the time mean

Answers

Answer:How often does Old Faithful blow?

The world's most famous geyser, Old Faithful in Yellowstone, currently erupts around 20 times a day. These eruptions are predicted with a 90 percent confidence rate, within a 10 minute variation, based on the duration and height of the previous eruption.

Step-by-step explanation:

How often does Old Faithful blow?

The world's most famous geyser, Old Faithful in Yellowstone, currently erupts around 20 times a day. These eruptions are predicted with a 90 percent confidence rate, within a 10 minute variation, based on the duration and height of the previous eruption.

Need some help on this thanks!!!

Answers

t = membership + book cost
membership = 20
book cost = 3 x number of books
t = 20 + 3b

Answer:

The answer would be 3b + 20 = t

Step-by-step explanation:

I think the question is referring to the total cost per month to be a member.

Since it costs 20$ monthly no matter what, that price will always stay the same per month.

However, it also costs $3 per book purchased. This price may not always stay the same, because you could buy a different number of books each month, and the price would be different. The cost for books depends on the number of books you buy, which is not stated in the question.

That is why you replace the number of books with a variable, in this case b.

So the equation would be 3b + 20 = t , with 3 being the cost per book, b being the number of books, 20 being the monthly cost, and t being the total amount per month.  

If the point (-1,2) lies on the graph of y=f(x), then a point on the graph of y=-2f(x)+5

Answers

Answer:

(-1, 1)

Step-by-step explanation:

Multiply f(x) or y value by -2, so (-1, 2) -> (-1, -4)

Add 5 to the f(x) or y value since it is a vertical translation, so (-1, -4) -> (-1, 1)

Line P is parallel Ito Line Q. Find the measure of angle 7 if the measure of angle 2 = 75.​

(Last Question)

Answers

<7 = <2 ( alternate exterior angle )<7 = 75 HOPE IT HELPS !!!!

Work out the size of angle x

I need help

Answers

Answer:

x = 43.34°

Step-by-step explanation:

cos x = 8/11

use your calculator to insert: shift cos x = 8/11

you'll get the measure of x

A manufacturer of cell phone batteries claims
That the average number

Answers

I think you didn’t complete your que.stion. What are you asking ????0

2(x + 3)=x - 4
help me ​

Answers

Answer:

x = -10

Step-by-step explanation:

2(x+3) = x-4 --> multiply (x+2) times 2

2x+6 = x - 4 --> subtract x from both sides

x+6 = -4 --> subtract 6 from both sides

x = -10

Answer:

x = -10

Step-by-step explanation:

Simplify both sides of the equation.

2 (x+3) = x − 4

(2) (x) + (2) (3) = x + −4 (Distribute)

2x + 6 = x + − 4

2x + 6 = x − 4

Subtract x (1x) from both sides

2x + 6 − x = x − 4 − x

x + 6 = − 4

Subtract 6 from both sides

x + 6 − 6 = − 4 − 6

x = -10

Please help me......​

Answers

Answer:

your answer will be option C

Step-by-step explanation:

hope it helps

have a nice day/ night ^_^

Answer:

Range: {y | y ≥ 1} (the third option)

Domain: {x | x ≥ -4}

Hope you have a great day/night!!

How to find the following slope-intercept form?

Y-3=7/9(x-4)

Answers

Answer:

[tex]y = \frac {7}{9} \times - \frac{1}{9} [/tex]

Steve already has 5 flowers in his garden, and he can also grow 1 flower with every seed packet he uses. Write an equation that shows the relationship between the number of seed packets x and the total number of flowers y.

Answers

Answer:

y = x + 5

Step-by-step explanation:

Using the information provided we can create the following equation. Since every seed packet can grow 1 single flower we would need to multiply 1 by the number of seed packets (x), which simplified would be just x . Next we are told that Steve already has 5 flowers in his possession meaning we need to add this to the new flowers that he is growing to get the total number of flowers.

y = x + 5

Ayşe kulin kanadı kırık kuşlar özeti​

Answers

Answer:

can you type it in english please?

Step-by-step explanation:

After 4 years you have 5300 what is the initial deposit if the account pays 2.5% annual interest compounded continuously

Answers

Answer:

Initial deposit P = 4,801 (Approx.)

Step-by-step explanation:

Given:

Amount after 4 year = 5,300

Number of year = 4 year

Rate = 2.5% = 0.025

Find:

Initial deposit

Computation:

A = P[1+r]ⁿ

5,300 = P[1+0.025]⁴

5,300 = P[1.025]⁴

5,300 = P[1.1038]

Initial deposit P = 4,801 (Approx.)

Find the volume of the figure shown and type your results in the empty box

Answers

I do not see a figur.e that is show.n you may wanna reupload

The savings off a sofa is $160 and the discounted amount was 20%. What is the original price of the sofa?

Answers

Divide the amount of saving by the percent of saving:

160/0.20 = 800

The original price was $800

Write the equation of the line that passes through the points (-3, 4) and (-3,3)​

Answers

Answer:

first determine the gradient because the equation of a straight line is y=mx+c

therefore gradient=change in y/change in x

=y2-y1/x2-x1

=4-3/-3-(-3)

=1/0

there fore gradient of the line is undefined

y=x+c

4=-3+c

4+3=c

7=c

therefore y=x+7

Hey Guys plz help me Factorise 4x³+8x in A full steps please guys

Answers

Answer:

see below

Step-by-step explanation:

4x³+8x

4([tex]x^{3} + 2x[/tex])

4x(x² + 2)

help!!! 50 points!!! plleasses

Answers

Answer:

4 times, he bought dinner 4 times

Step-by-step explanation:

if kevin get paid for 3 hours, then you would multiply $14 by 3. you would end up with $42, then the weekly allowance is $21. then by adding $21 to the $42 we have you would get $63. then a bus ride costs $2.50 and since he rode it 6 times you would multiply $2.50 by 6, which would equal $15. Then subtracting $15 from the $63, you would end up with $48, and then by dividing the total amount for the dinner each time bought, so $12/$48 would equal to 4 times.


Use a unit multiplier to convert
$12.00 per hour to dollars per
minute.

Answers

Answer:

$00.20 per min

Step-by-step explanation:

Technically $12.00 per hour is $12.00 per 60 min. So now take that and divide $12.00 by 60 and you get 20 cents per min.

Answer:

0.2$ per min

Step-by-step explanation:

The number of hours per week that the television is turned on is determined for each family in a sample. The mean of the data is 31 hours and the median is 27.2 hours. Twenty-four of the families in the sample turned on the television for 16 hours or less for the week. The 7th percentile of the data is 16 hours.

Step 1 of 5: Based on the given information, determine if the following statement is true or false. The 54th percentile is less than 26 hours.
Step 2 of 5: Approximately how many families are in the sample? Round your answer to the nearest integer.
Step 3 of 5: Based on the given information, determine if the following statement is true or false. Approximately 200 families turned on their televisions for less than 35 hours.
Step 4 of 5: What is the value of the 50th percentile?
Step 5 of 5: Based on the given information, determine if the following statement is true or false.The first quartile is greater than or equal to 20 hours.

Answers

Answer:

Step-by-step explanation:

The mean of the data is 31 hours and the median of the data 27.2 hours.

24 of the families in the sample turned on the television for less than 16 hours for the week.

The 7th percentile = 16 hours

Step 1:

The median is a value that divides the whole data into two equal parts. It implies that the median represents the 50th percentile of the data.

Given that the median is 27.2 hours, thus the 54th percentile should be greater than 27.2 hours.

Thus, the given statement is false.

Step 2:

Let assume that N is the total number of families

24 of the families in the sample turned on the television for less than 16 hours for the week.

The 7th percentile = 16 hours

It means that 7% of N = 24

N = 24/0.07

N = 343

Step 3:

From (2), N = 343

Given that median= 27.2 hours.

It means 200 families turned on their television for less than 27.2 hours.

We don't know if this is true for 35 hours. 100 families may use less than 35 hours and 200 may use more than 35 or vice versa. In addition to that, even 50 families might use less than 35 and 350 may use more than 35 hours.

Hence, the statement is false.

Step 4:

The median is the 50th percentile value which is = 27.2 hours

Step 5:

The statement is false

The 25th percentile is the first quarter of the data and if the 7th percentile is 16 hours, then the 25th percentile should be greater than that.

Issey is visiting famous monuments in Washington, DC. She walks 1/2 mile every 1/8 hour.
Therefore, Issey's walking rate is _____miles per hour.

Answers

Answer:

Step-by-step explanation

: el resultado es 6.43736 metros o 4 millas

l

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Answers

Answer:

20% shaded. 1/5 in simplist form

Let f(x) = 4x and g(x) = x + 6. What's
the smallest number that is in the domain of
fºg?
Will give brainlist if right

Answers

Answer:

4x+24

Step-by-step explanation:

fog= f(gx),

= f(x+6)

= 4(x+6)

=4x+24

What is the axis of symmetry for f(x)=x^2-8x+7

Answers

The answer is the axis of symmetry is 4

4. Solve the system using substitution.
x + 2y = -1
y = -3x - 8
A. (-3, 1)
B. (-3,-1)
C. (2,-2)
(-3,-17)

Answers

Answer:

A

Step-by-step explanation:

-3+2=-1 and (9)- 8=1

Which simplified fraction is equivalent of 0.56. ?

Answers

Answer:

56/100

by simplifying, 14/25

Step-by-step explanation:

Hope it helps you

State whether the following statements are True or False:
a) If the perimeter of a square is 96 cm, then its area will be 384 sq. cm.

b) In ∆ ABC and ∆ PQR, Angle A = Angle P, AB = PQ and Angle B =
Angle Q, then the two triangles are congruent by the ASA test.

c) The total cost of putting a fence around a rectangular garden of length
12 m and breadth 6 m at the rate of Rs. 100 per metre is Rs. 3600

d) Each angle of an equilateral triangle is 80°

Answers

Answer:

a) False

b) True

c) True

d) False

Step-by-step explanation:

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