y is inversely proportional to x.
When y = 7, x= 9
Work out the value of y when x = 21.

Answers

Answer 1

Answer:

y = 3

Step-by-step explanation:

y is inversely proportional to x setup:  y = k/x

'k' is the constant of variation; find this first

7 = k/9

k = 63

now use 'k' to find 'y'

y = 63/21

y = 3


Related Questions

(PLEASE HELP) Chloe has 40 lollipops of these lollipops 15 of them are blue and the rest are red what is the ratio of the number of blue lollipops to the number of red lollipops

Answers

Answer:

25:15

Step-by-step explanation:

red:blue

Answer:

15:25

Step-by-step explanation:

6
What will be the new position of the given point after
translation of 3 units down and 3 units left?
b)
d)

Answers

so i think if you mean the starting point is (6,0) then the answer would be (3, -3)

Owen is planning surgery to repair the torn ligament in his knee. The total cost of the surgery is expected to be about $7,000. Owen has a $1,000 deductible and then a 20 per- cent co-pay for this procedure. How much will Owen pay for his part of the surgery?

Answers

Answer:

$2200

Step-by-step explanation:

Given that Owen has $7000 to pay, with a $1000 deductible. This means that he has, left to pay, $6000.

Again, we're told that he has 20% Co pay for the procedure. Taking 20% of $6000, we have

20/100 * 6000 = $1200. This means be has $1200 to co pay for the procedure.

Adding this newly calculated $1200 with the previously set aside $1000, we have a total of $2200. This is the price Owen will pay from his part, as part of the surgery

Complete the square and write the quadratic equation in vertex form please show steps

Answers

Answer:

Square: [tex](x-10)^{2} -68[/tex]

Vertex: (10,-68)

Step-by-step explanation:

Help plz
(1,-4)
(4,1))
(-1,-4)
(1,4)

Answers

Answer:

(1, -4)

Step-by-step explanation:

Rachel needs to write 3 book reports with b pages
and 3 science reports with s pages during the
school year. Write an algebraic expression for the
total number of pages Rachel will need to write.

Answers

Answer:

90% of people marry their 7th grade love. since u have read this, u will be told good news tonight. if u don't pass this on nine comments your worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of your life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love you

Step-by-step explanation:

In the equation y=3x-4 , the y-intercept is -4

Answers

Answer:

R we suppose to graph?

Step-by-step explanation:

If it’s that u want to ask if ur correct sure the y-intercept is -4

Which equation represents the line that passes through
the points (2, 3) and (4, 7)?

Answers

Answer:

Step-by-step explanation:

(7 - 3)/(4 - 2) = 4/2 = 2

y - 3 = 2(x - 2)

y - 3 = 2x - 4

y = 2x - 1

Mrs. Pints wrote the volume formula as
“V=Bh”. What does ”B“ represents

Answers

Answer B stands For Base and h stands for Height

4(5x-3)=20x-3 I just need the solution

Answers

Step-by-step explanation:

Don't try to be oversmart The equation is invalid

The point (-6,-2) is located in quadrant

Answers

Step-by-step explanation:

The point is located in the second quadrant because x is negative and y is positive.

Answer:

Quadrant 3

Step-by-step explanation:

Which value of x makes the equation 0.1x - 2.5 = 1.0 true

A 10
B 15
C 20
D 35

Answers

Answer:

D 35

Step-by-step explanation:

When figuring this out you can just plug in your answers if you want to take it the easier way by just putting in the 35 in places of x and multiplying 0.1 times 35 gets you 3.5 so 3.5 minus 2.5 is 1

Answer:

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Step-by-step explanation:

DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD.........................................................D :D

equation for horizontal line at 0,-7

Answers

y=-7

there’s no slope so there’s no x

it’s just the y intercept which is -7

Ramon walks at a constant rate of 6mi/hr. Write an equation using the variables m and h to represent how many miles he would walk in any given hour.​

Answers

Answer:

Key for H and M. ( H-Hour)(M-Mile)

6m= h divided by 10=6

Step-by-step explanation:

6 times 10= 60 minutes. So 1 mile every 10 minutes. This was hard, but it clicked at the end. Good luck, and remember to sub out the divided and multiply by with the signs!

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Answers

Answer:

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Please hellllpppp meeeee

Answers

Answer:

23.49

Step-by-step explanation:

107.04-83.55= 23.49

what is the slope of the line passes through the points (-3, -3) and (-5, -2) in simplest form help me

Answers

Answer:

Slope, [tex]m=\dfrac{-1}{2}[/tex]

Step-by-step explanation:

We need to find the slope of the line passes through the points (-3, -3) and (-5, -2).

The formula for the slope of a line is given by :

[tex]m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]

Put x₁ = -3, y₁ = -3, x₂ =-5 and y₂ = -2

So,

[tex]m=\dfrac{-2-(-3)}{-5-(-3)}\\\\m=\dfrac{-1}{2}[/tex]

So, the slope of the line is [tex]\dfrac{-1}{2}[/tex].

All of the points in the graph are on the same line.

Find the slope of the line.

Answers

Answer:

The slope of the line is [tex] \frac{1}{2} [/tex].

-

Step-by-step explanation:

☆Remember:

[tex]m =  \frac{y_2 - y_1}{x_2 - x_1} [/tex]

☆Just plug it in with 2 sets of coordinate points.

[tex]m =  \frac{7 - 3}{9 - 1} = \frac{4}{8} = \frac{1}{2} [/tex]

work out the equation of the line which has a gradient of 2 and passes through the point (1,4)


please answer quick

i will mark you brainiest

Answers

gradient is 2

Step-by-step explanation:

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Rectangle FGHJ has diagonals FH and JG that intersect at M. If FJ=−3x+5y, FM=3x+y, GH=11, and GM=13, find the values of x and y. Explain your answer.

Answers

Answer:

x=3 y=4

Step-by-step explanation:

   -3x + 5y = 11

+   3x + y = 13

Add the equation (add the 5y and y. Then add the 11 and 13). The threes cancel each other out. It then leaves us with the equation:

6y = 24

Divide both sides by 6 to isolate the variable.

y=4.

Then just substitute the variable into any of the equations above. (I chose the equation on top)

-3x + 5(4) = 11

Then solve

-3x + 20 = 11 (then subtract 20 from both sides)

-3x = -9 (then divide both sides by -3)

x=3


What is the number of terms in this expression?
M/5 + 4 x 6

Answers

Answer:

Step-by-step explanation:

Terms are separated by addition and subtraction therefore two terms

What is the image of the point (8,-6)(8,−6) after a rotation of 180 counterclockwise about the origin?

Answers

Answer:

(-8, 6)(-8, 6)

Step-by-step explanation:

The formula for 180 degree rotation is (-x, -y)

Compute (4803) • 95. *

Answers

Answer:

456,285

zzzzzzzzzzzzzzzzzzzzz

When 8 is added to a certain number and the
sum is multiplied by 3, the result is 57.
Find the number.​

Answers

Answer:

11

Step-by-step explanation:

11+8=19

19x3=57

what has the greatest value 3/10 or 1/2 or 2/5

Answers

Answer:

1/2, 2/5, 3/10 is the order

Step-by-step explanation:

create common denominators then you can tell by the numerator.

3/10=3/10

1/2=5/10

2/5=4/10

The translation shown in the graph moves the figure to the right. What kind of translation is shown? ​

Answers

Answer:

Horizontal

Step-by-step explanation:

Answer:

Horizontal...............

Adult tickets for the school musical are sold for $3.50 and student tickets are sold for $2.50 on a given night 425 tickets were sold for $ 1237.50. Wrote a system of linear equations for the problem

Answers

Answer:

3.5x + 2.50y = 1237.50

425 = x + y

Step-by-step explanation:

number of adult tickets: x

number of student tickets: y

3.5x + 2.50y = 1237.50

( value of adult ticket [3.50]* number of adult tickets [x]) + (value of student ticket [2.50] * number of student tickets [y]) = total value (1237.50)

425 = x + y

(number of adult tickets [x]) + (number of student tickets [y]) = total (425)

A cone has volume 12pie cubic inches. Its height is 4 inches. What is its radius?
A.) 6 inches
B.) 4 inches
C.) 12 inches
D.) 3 inches​

Answers

Answer:

r = 3

Step-by-step explanation:

The formula of a volume of a cone

V= 1/3 pie r^2 H

r - radius

H - height

We have V = 12π in³ and H = 4 in. Substitute:

The radius of the cone is 3 inches

Volume of a conev = 1 / 3 πr²h

where

h = height

r = radius

Therefore,

v = 12π

h = 4

12π = 1 / 3 × π × r² × 4

12 = 4  /3  r²

36 = 4r²

r² = 36 / 4

r = √9

r = 3 inches

learn more on cone here:https://brainly.com/question/9837241

rationalize root 3+root 5​

Answers

Answer:

- 2

Step-by-step explanation:

To rationalise multiply by its conjugate.

The conjugate of [tex]\sqrt{3}[/tex] + [tex]\sqrt{5}[/tex] is [tex]\sqrt{3}[/tex] - [tex]\sqrt{5}[/tex] then

([tex]\sqrt{3}[/tex] + [tex]\sqrt{5}[/tex] )([tex]\sqrt{3}[/tex] - [tex]\sqrt{5}[/tex] ) ← expand using FOIL

= ([tex]\sqrt{3}[/tex] )² - [tex]\sqrt{15}[/tex] + [tex]\sqrt{15}[/tex] - ([tex]\sqrt{5}[/tex] )²

= 3 - 5

= - 2

Paul won 37 super bouncy balls playing hoops at county fair. At school he gave two to every student in his math class. He only had 3 remaining. How many students are in his class?

Answers

Answer:

17 students

Step-by-step explanation:

If he started with 37 and ended with 3 we have to subtract those three first so that we know how many we are actually working with so, 37-3=34. 34 balls is the amount distributed among the class. 34/2 is 17.

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