PLS HELP ILL GIVE BRAINLIEST

Kim's age is twice that of her sister. When you add Kim's age to her sister's age, you get 30. How old is each sister?
(a) Write an equation that represents the situation. Explain any variable used.
(b) Solve the equation from Part (a). Show your work. State your solution as a complete sentence.

Answers

Answer 1

Answer:

Kim's age is twice of that of her sister. We'll let k2 = Kim and k = Kim's sister.

So, k2. When you add Kim's age to her sister age you get 36.

Because Kim is twice the age of her sister k2. And because it said 'add' then we put a + sign. k2 + s = 36. Now let's solve it.  

k2 + k = 36 < Given

3k = 36 < Combine like terms

k = 12 < Divide both sides by 3

We know Kim's sister is 12 y/o but what about Kim herself? Earlier we assigned Kim to k2. Substitute 12 for k and you get 12(2) = 24

Kim's sister is 12 y/o and Kim is 24 y/o

Step-by-step explanation:

Mark as brainliest please

Answer 2

Kim's age = x

Age of her sister = y

Acoording to conditions, [tex]x=2y[/tex]

The equation  is,

[tex]x+y = 30 \\\\\implies 2y + y = 30\\\\\implies 3y = 30 \\\\\implies y = 10\\\\x = 2y = 2(10) = 20\\\\\text{Hence, Kim is 20 years old and her sister is 10 years old.}[/tex]


Related Questions

The ratio of boys to girls at a party was 6:7 if there were 28 girls how many people attended the party

Answers

Answer:

52

Step-by-step explanation:

6+7=13

6:7=13

x:28

28/7=4

so you have to multiply by 4

4x6=24

24 boys and 28 girls

24+28=52

Answer:

52

Step-by-step explanation:

Lets put the ratio like this: 6x (boys) : 7x (girls)

because we know that the amount of girls is 28 we can set them equal as so:

7x = 28

÷ divide both sides by 7

x = 4

now add 6x + 7x to get the total people = 13x and because x equals 4, we can multiply 13 by 4. Which is 52

HOPE THIS HELPS :)

solve for q
q/-2+17=13

q=

Answers

Answer:

q = 8

Step-by-step explanation:

-q/2 + 17 = 13

subtract 17 from each side to get:

-q/2 = -4

to isolate the 'q', multiply each side by -2 to get:

q = 8

Find a job that uses trigonometry. Include an image depicting the job and a description of how the trigonometric concepts learned in this module are used in the job.

Answers

Engineering

In engineering you need to determine the structure of shapes, buildings.The distance from base to building top total length of carpets,the settings of CCTV cameras for perfect view you need trigonometric functions like sin ,cos,tan etc

How do you write the nth term rule for the sequence
1
,
3
,
5
,
7

Answers

basically the answer is 2n-1  2n comes from the difference to get from 1 to three and the -1 from 2n to get to 1 you need to minus 1 so you get -1

PARALLEL PERPENDICULAR OR NEITHER

Answers

Answer: maybe: perpendicular

Step-by-step explanation:

Parallel I think, hope this helps:)

What is 7/10+1/2 as fraction

Answers

Answer:

6/5 or 1 1/5

Step-by-step explanation:

Make a common denominator: 1/2 is equal to 5/10

7/10+5/10=12/10

12/10 simplified is 6/5

As water evaporates from a bucket, its weight changes at a rate of -11/4 ounces per day.
what's the answer?

Answers

Answer:

the five differences are 24.88

-4/7÷8/9 help me with it please

Answers

Answer:

-36/56

Step-by-step explanation:

As long as he's hired by someone, roughly how much can James earn in a month from his part-time job? Assume that his net pay is $8/hour and assume 4.5 weeks

Answers

Answer:

36

Step-by-step explanation:

8 * 4.5 = 36

James will earn 252 dollars if he work in a month from his part-time job. when his per hour pay is 8 dollars and assuming 4.5 weeks.

What is net earnings of James?

Whenever an employee work for a company he recieves a salary for his work now james is working as a part-time employee so he is getting 8 dollars for per hour working.

Suppose james is working one hour every day as a part timer so his income in one month or in 4.5 weeks will be

[tex]\rm James\ income =8\times 4.5\times 7[/tex]

[tex]\rm James\ Income= 252[/tex]

Hence James will earn 252 dollars if he work in a month from his part-time job. when his per hour pay is 8 dollars and assuming 4.5 weeks.

To know more about income follow

https://brainly.com/question/25745683

find an equation of the line that passes through the points (-3,10) and (2,-5)

Answers

Step-by-step explanation:

the most common form of line equation is

y = ax + b

a is the slope of the line. it is expressed as the ratio

y coordinate change / x coordinate change

when going from one point to the other.

b is the y-intercept (the y value when x = 0).

once we have the slope, we get b by using the coordinates of one of the given points as x and y in the equation and since for b.

for the slope a :

x changes by +5 (from -3 to 2)

y changes by -15 (from 10 to -5)

so, the slope is -15/+5 = -3

the equation looks now like

y = -3x + b

let's use the first point

10 = -3×-3 + b = 9 + b

1 = b

so, the equation is

y = -3x + 1

Any math teacher here

Answers

Answer:

what's the question?

Step-by-step explanation:

Which of the playground’s features are more than 25 feet away from the swings? Choose the THREE correct answers.

Answers

The playground’s features are more than 25 feet away from the swings are;

Sandbox, Water fountain, Jungle gym

Looking at the given graph, the distances of the other features from the swing are;

For sandbox; 8 units

For restroom; 4 units

For water fountain; 9 units

For Jungle gym; 7 units

Bench; 5 units

Now we are told that each units on the graph represents 5 ft.

Thus, the respective distances from the swing are;

Sandbox to swing = 8 × 5 = 40 ft

Restroom to swing = 4 × 5 = 20 ft

Water fountain to swing = 9 × 5 = 45 ft

Jungle gym to swing = 7 × 5 = 35 ft

Bench to swing = 5 × 5 = 25 ft

Thus, the playground’s features are more than 25 feet away from the swings are;

Sandbox, Water fountain, Jungle gym

Read more about interpretation of graphs at; https://brainly.com/question/1638242

What number president was john quincy adams.

Answers

Answer:

6

Step-by-step explanation:

john quincy adams was the 6th president

a boy is y years old now .how old was he 10 years ago ​

Answers

Answer:

Hi there the answer is y-10

When  x=3, the value of x^2-2 is?​

Answers

Answer:

7

Step-by-step explanation:

First you would square 3 which is nine. Then subrtact 2. The final answer is 7 .

Х
у
10
-4
2
1
6
-5 help pls

Answers

Step-by-step explanation: 10 / х - 4 = 2 ; 6 - 5у = - 4, 5 ; 2у + 1 / 3 = 5 ; 6, 2 / 3у + 1 = 2.

add the following rational number =
3/11 and -5/12

Answers

Answer:

-19/132

Step-by-step explanation:

To add fractions, find the lowest common multiple of the two denominators and multiply accordingly to make both denominators the same. In this case, the lowest common multiple of 11 and 12 is 132, so we need to multiply the first number by 12 and the second by 11. So we get [tex]\frac{36}{132} + (-\frac{55}{132} )[/tex] = [tex]\frac{36-55}{132}[/tex]=[tex]\frac{-19}{32}[/tex][tex]-\frac{19}{132}[/tex]

Please help will give brainlest

Question 67x3-34+49x2

Answers

Answer:

265

Step-by-step explanation: Used a Calculator

Answer:

[tex]67x^{3} + 49x^{2} -34[/tex]

hopes this helps

Please help me solve this... I will mark you brainliest if it’s correct

Answers

(5 + 7x + 6)/2 = 3x + 9

7x + 11 = 6x + 18

7x - 6x = 7

x = 7

EF = 3x + 9

= 3(7) + 9

= 21 + 9

= 30

the graph shown below expresses a radical function that can be written in the form f(x)=a(x+k)^1/n+c. what does the graph tell you about the value of c in this function?

Answers

Answer:

c = 2.

Step-by-step explanation:

When the first part of the function has the value 0,  f(x) will also be 0 if the c wasn't there.

So the value of c is 2.

From the given graph n is a positive odd number.

What is the exponential function?

Exponential function, as its name suggests, involves exponents. But note that, an exponential function has a constant as its base and a variable as its exponent but not the other way round (if a function has a variable as the base and a constant as the exponent then it is a power function but not an exponential function).

From the graph,

All the values of the graph are positive values (even for the negative values of x), but in the left side we can see that the function decreases and is different than the right side.

So this is not an even function, then n must be an odd number (n odd allows us to have negative values for y = f(x) that happen when x + k is negative).

Also, we can see that the function increases, if n was a negative number, like: n = -N

We would have: [tex]f(x)=\frac{a}{(x+k)^{\frac{1}{N} }} +c[/tex]

So in this case x is in the denominator, so as x increases, we would see that the value of y decreases, but that does not happen, so we can conclude that the value of n must be positive.

Then n is a positive odd number.

Therefore, n is a positive odd number.

Learn more about the exponential function here:

brainly.com/question/11487261.

#SPJ7

Write the equation of the line in fully simplified slope-intercept form.

Answers

Y=-5x-8
It is 5 down and 1 right so it’s -5 and -8 is from the y- intercept where it crosses

Find the equation of the line that passes through (1,2) and is perpendicular to y = 2 x + 3

Answers

Answer:

See below

Step-by-step explanation:

The slope of the perpendicular line with y = 2x + 3 is m = - 1/2.

Use point-slope form to find its equation:

y - y₁ = m(x - x₁)y - 2 = - 1/2(x - 1)

or

y = -1/2x + 2 1/2

or

y = -0.5x + 2.5

Answer:

See below

Step-by-step explanation:

The slope of the perpendicular line with y = 2x + 3 is m = - 1/2.

Use point-slope form to find its equation:

y - y₁ = m(x - x₁)

y - 2 = - 1/2(x - 1)

or

y = -1/2x + 2 1/2

or

y = -0.5x + 2.5

give brainliest to me or to the person below or up bc I ctrl+c and ctrl+v

bc is soooo coool the other one lol

the Arizona Cardinals won 10 games out of 16 games during the 2009 regular season. At this rate, how many games do they need to play to win 50 games?

Answers

For every 10 games they won they lost 6:

50 wins/ 10 wins = 5

5 x 6 loses = 30 loses

50 wins + 30 loses = 80 total games

Answer: 80

help please with math i beg you​

Answers

a) x=24b+8v

4 * 24 = 96

120 - 96 = 24

24 / 8 = 3

b) 3

6 * 8 = 48

120 - 48 = 72

72 / 24 = 3

c) 3

120 / 8 = 15

d) 15

120 / 24 = 5

e) 5

does anyone else do i-ready? my little sister thinks we are the only school that does it. She's in pinecrest academy.

i think other students do it too, just saying

Answers

Answer:

When I was in my school I use to before the virus we use to do I-Ready all the time so I can promise y'all ain't the only ones

A=rt + q solve for t

Answers

Answer: t= [tex]\frac{A-q}{r}[/tex]

Step-by-step explanation: subtract q from both sides, to get A-q=rt, then divide r by both sides to get the answer above

there are 6 marbles if 5 are needed, how many different alternatives are there

Answers

Answer:

30

Step-by-step explanation:

5x6=30

A backyard swimming pool has two fill pipes and a drain pipe. The pool fills in 9 hours with the first fill pipe. Draining the pool with the drain pipe takes 1 hour longer than filling the pool with the second fill pipe. If all three pipes are open at once, the pool can be filled in 8 hours. How many hours would draining the pool take with the two fill pipes closed?

Answers

I believe the answer is 1? sorry if i’m wrong

PLS WHAT IS THE REAL ANSWWR ASAP

Answers

the answer is t<-48

i hope this helped you if you need the explanation lmk

Find the x - and y -intercepts of the graph of the linear equation -4x+8y=-16 .

Answers

Answer:

x: (4, 0)y: (0, -2)

Step-by-step explanation:

To find the x-intercept, set y=0 and solve for x. That will mean dividing by the coefficient of x:

  -4x +0 = -16

  x = -16/-4 = 4 . . . . the x-intercept

__

To find the y-intercept, set x=0 and solve for y. That will mean dividing by the coefficient of y:

  0 +8y = -16

  y = -16/8 = -2 . . . . the y-intercept

__

The x- and y-intercepts are (4, 0) and (0, -2), respectively.

_____

Additional comment

The standard form equation of a line, ax+by=c, is especially nice for finding the intercepts, as they are always (c/a, 0) and (0, c/b). Once you see this, you can do a question like this in your head.

Other Questions
Compute the following sum of a geometric sequence: S = 0.936 + 0.935 + ... + 0.92 + 0.9 + 1 (Round your answer to two decimal places.) A piece of iron has a density of 7.86 g/cm3 and a mass of 1.09 x 10^-1 kg. Calculate the volume of the piece of iron. What is the minimum of the sinusoidal function?Enter your answer in the box. What does the poem How do I love thee? Mean to you? What do the Mississippi and Amazon river have in common? namaskaram kuttikala nammuke inne malayalam padikaam doubt undekil chodikam !!!!!Roses are red. Violets are fine. You be the six. Ill be the nine Clarke earns 2.5% interest a savings account each year. If Clarke deposits $2,000.00 into a savings account, how much interest will Clarke earn during the first year? A 14.0 L container at 323 K holds a mixture of two gases with a total pressure of 8.00 atm. If there are 1.50 mol of Gas A in the mixture, how many moles of Gas B are present If the holocaust didn't exist or changed what wouldve happened ? IMMA TRY SUM---- anybody or everybody drop y'all usernames and see you follows youmine is zzaaeesshhaa for all ig,sc,tt Explain why there are substances on earth then are listed on the periodic table of elements Why are proteins not found in the proximal convulated tubule An art club sells 42 large candles and 56 small candles.a. Use the Distributive Property to write and simplify an expression for the profit. expression for the total profit: _(_-x) + (_-y) simplified expression for the total profit: b. A large candle costs $5, and a small candle costs $3. What is the clubs profit? club's profit: $ Help please I will mark the first person the Brilliant How many minutes did it take for all of the gold in the sample to change from solid to liquid? Time taken minutes = How to square a number in java. Which continent needs anti-natal policies, but struggles with the means to effectively implement them?A) AsiaB) EuropeC) AfricaD) North America In the reaction below the total mass of calcium in the reactants is 40. What is the total mass of calcium in the products? Which method of learning, which emphasizes self-paced instruction and developmentally appropriate activities, was examined by Camp and Skrajner (2004) in their study of people with dementia Need help on this simple question, select the two correct answers (: