x is directly proportional to y. When y = 7, x = 28. Write and equation of x in terms of y. Find x when y = 15.

Answers

Answer 1

Answer:

60

Step-by-step explanation:

28 : 7 : : x : 15

28 / 7 = x / 15

4 = x / 15

x = 4 * 15

x = 60

Answer 2
x = ky— directly proportional

28 = 7k

4 = k

so x = 4y

plug in y and you get x = 4(15) = 60

Therefore, x = 60 when y = 15

Related Questions

Somebody please help me

Answers

Answer:

3750

Step-by-step explanation:

Find the equation of the line in slope-intercept form with a
slope of 4 containing the point (-3,2)

Answers

Answer:

y = 4x + 14

Step-by-step explanation:

y-intercept: 2 - (4)(-3) = 2 + 12 = 14

y = 4x + 14

Compare the values A B C or D

Answers

Answer:

In the pic

Step-by-step explanation:

All the ans is in the pic

Help solve this please.

Answers

Hey there!

(-12) - (+3 - 4 - 10) + (-15)

= -12 - (3 - 4 - 10) - 15

= -12 - (-1 - 10) - 15

= -12 - (-11) - 15

= -12 + 11 - 15

= -1 - 15

= -16

Therefore, your answer should be: -16

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

You have $6 to spend on lunch. The drinks cost $1.25 each and the salad
costs $0.20 per ounce. Write an equation in standard form that models
this situation.
1. 1.25 +.20x = 6
2. 1.25x + 20y = 6
3. 1.45x = 6
4. 1.25x + 6y = 20

Answers

Answer:

1. 1.25 + .20x = 6

Step-by-step explanation:

You will most likely just buy one drink and multiple ounces of salad with the 6 dollars you have to purchase a whole meal.

.20x, where x equals how many ounces you purchase

1.125 for the one drink

When set equal to 6 dollars you are able to find how much salad plus a drink you can purchase in total.

Suppose that the water level of a river is 50 feet and that it is receding at a rate of 0.75 foot
per day. Write an equation for the water level,, after days. In how many days will the water
level be 30 feet?

Answers

Y=-0.75x+50

Now put in 30 for y:
30=-0.75x+50
-20=-0.75x
X=26.6666
So in 26/27 days

Please I need help in here :(​

Answers

Answer:

5 chairs to 5 tables

5:5

all you have to do is count them and write them in ratio

(v4-4v³-4v²+4)÷(v-1)

Answers

Answer:

Step-by-step explanation:

How do this
Plsss help
Y= 2/3x - 4; y= -3/2x + 2; y+ -1; x=3

Answers

Answer:

1234556

Step-by-step explanation:

Sorry I don’t know the answer

1 book/5 days is it a unit rate

Answers

Answer: No, it is not a unit rate

Explanation:

A unit rate is when the time value in the denominator is 1. So it would need to be "1 day" instead of "5 days" for it to be a unit rate. The term "unit" means "one".

To convert to a unit rate, we simply compute 1/5 = 0.20 to see that the unit rate is 0.20 books per day. This is the same as saying "0.20 books every 1 day", but I think the phrasing "books per day" is more common.

f (x) = -8x - 8 and g(x) = x + 1 (f/g)(x)

Answers

-8

Step-by-step explanation:

(f/g)(x)

= f(x)/g(x)

= (-8x - 8)/(x + 1)

= -8(x + 1)/(x + 1)

= -8

Omggg pls help me with this question pls pls pls!!!!!!

Answers

I’m not 1000% sure, but i’m almost positive it’s A. :)

Answer:

A

Step-by-step explanation:

A. is the answer I'm sure

could someone please help answer this, no spam, thank you, will give brainliest, (homework help)!

Answers

Answer:

the answer would be ...... x > 5

Answer:

x>5

Step-by-step explanation:

Evaluating





100 points worth is it worth it. Also giving out brainliest to the right or closest right answer.

Answers

D) 4 is the answer use the rule of BODMAS

Answer:

C

Step-by-step explanation:

8x2= 16

8x3 = 24

24+16 =40

40/4 = 10

10-8 = 2

If x and y are real numbers such that x > 0 and y < 0, then
which of the following inequalities must be true? (Hint:
plug in possible numbers for x and y)

Answers

Answer:

Step-by-step explanation:

The third one

If x and y are real numbers such that x > 0 and y < 0, then |x|^2 >|y| could be the correct option. So Option 3 is answer.

What is a solution set to an inequality or an equation?

If the equation or inequality contains variable terms then there might be some values of those variables for which that equation or inequality might be true.

Such values are called solution to that equation or inequality.

So, Set of such values is called solution set to the considered equation or inequality.

If x and y are real numbers such that x > 0 and y < 0,

We need to find the inequalities that must be true for the given situation;

Hence, |x|^2 >|y| could be the correct option.

When we put a number such that x > 0 and y < 0, then this holds true.

So Option 3 is answer.

Learn more about inequalities here:

https://brainly.com/question/27425770

#SPJ5

. The number which when divided by 19 gives the quotient 4 and remainder
4 is
(a) 76 (b) 80 (c) 72 (d) 152

Answers

Answer:

b option 80 is the correct answer

please mark me as the

have a beautiful day

Answer:

a) 76

Step-by-step explanation:

Divide each number by 19.

76/19=4

80/19=4.21

72/19=3.79

152/19=8

In the equation 3x + 2x + 7 = 6x, what are the like terms?

Answers

Answer:

3x , 2x and 6x are like terms!!

Answer:

The like terms are 3x. 2x. 6x because they both have the x statement

Step-by-step explanation:

1/3 of 7 as a fraction

Answers

Hey There! Whoever we see the keyword “of”, we know that it’s multiplication Therefore we’re multiplying 1/3 and 7/1 that gives us 7/3

Find the sets of numbers to which
belongs.
Select all that apply.
D A. integers
B. irrational numbers
C. natural numbers
D. rational numbers
E. whole numbers
F.
real numbers

Answers

Step-by-step explanation:

a is the right answers to the same as the right

What is the rate of change for the equation y = 2x + 100?

Answers

The rate of change is 2.

good luck :)

PLEASE HELP
bjF9YFCCHONNPLFBNPGNELIVLGNOELIUGMOR

Answers

The Answer from when you are doing the equation: Negative 8 :The answer to the question:E

Step-by-step explanation: When you add negative numbers, you are basically adding normal numbers, or atleast they look that way, you are actually subtracting but lest just pretend we are adding except they are not normal, all you have to do is add the numbers, but put a negative sign before you put in a number.

Madison needs to buy a new laptop for her music production. She borrows $2,100 and must pay the money back in equal amounts for 7 months. She must also pay $4 interest each month. What is her monthly payment, including interest?

Answers

Answer:

304

Step-by-step explanation:

2100÷7=300

300+interest=300+4

=304

Answer:
$304
Explanation:
$2100 divided by 7 months is $300 plus $4 interest it’s $304

cual es el valor de la y en la siguiente ecuacion y/3 = 7

lo ocupo para mañana​

Answers

Solution:

[tex] \frac{y}{3} = 7 \\ = > y = 7 \times 3 \\ = > y = 21[/tex]

Answer:

y = 21

What is 441 divided by 7 with a remainder

Answers

Answer:

63

Step-by-step explanation:

Answer:  

The answer to 441 divided by 7 calculated using Long Division is:

63

0 Remainder

Step-by-step explanation:

The ratio of red marbles to blue marbles in a bag is 6:7. How many red marbles are there if there are 364 total marbles in the bag?

Answers

Answer:

162

Step-by-step explanation:

6x+7x=364 suppose

13x=364

X=364/13=27

then,

red marbles=6x

=6×27=162

Answer:

162

Step-by-step explanation:

solve this equation
-10+2x=-40

Answers

Answer: X= -15

Step-by-step explanation:

Add 10 from the left side to the right side to arrive at -30. Divide -30 by 2 to solve for X.

25°
y
X
30°
y = [ ? jº
Enter

Answers

Answer:

55°

Step-by-step explanation:

25 + 30 = 55°

180-55°=125° (x)

x adjacent with y

180-125=55

So y = 55°

PLEASE HELP!
Heather invest $3377 in a retirement account with a fixed annual interest rate of 8% compounded two times per year .how long will it take for the countdowns to reach $14,989.87?
round to the nearest whole year.

Answers

It will take 19 years for the countdowns to reach $ 14,989.87

Given that Heather invest $ 3377 in a retirement account with a fixed annual interest rate of 8% compounded two times per year, to determine how long will it take for the countdowns to reach $ 14,989.87 the following calculation must be performed:

Initial value x (1 + interest rate / compounding times) ^ (years x compounding times) = Compound interest

3377 x (1 + 0.08 / 2) ^ 2X = 14,989.87 3377 x 1.04 ^ 2X = 14,989.87 3512.08 ^ 2X = 14,989.87 X = 19

Therefore, it will take 19 years for the countdowns to reach $ 14,989.87.

Learn more in https://brainly.com/question/14295570

Calcula la suma de las longitudes de los catetos, si la hipotenusa mide 15 u y la altura relativa a ella mide 6 u.
UwU

Answers

Answer:

9 sqrt(5)

Step-by-step explanation:

La altura relativa a la hipotenusa corta la hipotenusa en dos segmentos.

Defina x como

x = la longitud de uno de esos segmentos

Entonces, la longitud del otro segmento = 15 - x.

Entonces, por el teorema, tenemos que (15-x) (x) = 36, de modo que

15x - x ^ 2 = 36

x ^ 2 - 15x + 36 = 0

(x-3) (x-12) = 0

Entonces, x = 3 o x = 12.

Sin pérdida de generalidad. sea ​​x = 3.

Entonces, la suma de las dos piernas es

raíz cuadrada (6 ^ 2 + 3 ^ 2) + raíz cuadrada (12 ^ 2 + 6 ^ 2) =

raíz cuadrada (36 + 9) + raíz cuadrada (144 + 36) =

raíz cuadrada (45) + raíz cuadrada (180) =

raíz cuadrada (9 * 5) + raíz cuadrada (36 * 5) =

3 raíz cuadrada (5) + 6 raíz cuadrada (5) =

9 cuadrados (5)

Due to a slump in the economy, a mutual fund has dropped by 30% from last year to this year. If the fund is now worth $12,495, how much was the fund worth last year?

The fund was worth $___ last year.

Answers

Answer:

$17850

Step-by-step explanation:

70% is 12495

100% is x

70x = 12495*100

70x = 1249500

x = 1249500/70

= $17850

Hope this helps... Feel free to mark this as brainliest! :D

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