xis directly proportional to y.
When x=21, then y=3.
a) Express x in terms ofy.
b) Find the value ofx when y is equal to 10.​

Answers

Answer 1
x = k x y
21 = k x 3
k = 7
x = 7y

x = 7(10)
x = 70

Related Questions

what is the equation of the vertical line through (2, 3) hurry! 40 points

Answers

Step-by-step explanation: The equation of a vertical line can always be written as x = the x-coordinate of the given point.

So in this case, our equation is x = 2.

Help please! See attached photo​

Answers

X = 20cm

Hope this helps :)

A family of 5 drove to a concert. They paid $4 one time for parking and all of their tickets were the same price. They paid $99 total. What equation would represent this situation?

Answers

Answer:

5 + (18,8 × 5) = 99

Explaination

one ticket costs: (99$ - 5$) ÷ 5 = $18,8

Helen buys a fleet of taxis for her new business.
The bank lends her £300 000 and she uses this money
to buy the taxis which cost £23 400 each.
a) How many taxis can she buy?
b) How much of the loan will be left over?

Answers

Answer:

a=12 b= 19200

Step-by-step explanation:

Sally needs to buy 13 250 mm of edging for her garden. The edging costs $11 per metre. Calculate the total
amount Selly will need to pay for the garden edging.

Answers

13250 mm is 13.25 m
13.25 * $11 = 145.75

What is area of figure. The height is 10m base is 25 m

Answers

Answer:

If it is a 4-sided figure: 250 m

If it is a triangle: 125 m

Step-by-step explanation:

The radius of a circle is 2 millimeters. What is the circle's area?
r=2 mm
Use 3.14 for .
sanare millin

Answers

Answer:

12.56 mm²

Step-by-step explanation:

[tex]A=\pi r^{2}[/tex]

Plug the given values into the area equation

[tex]A=3.14*2^{2}\\A=3.14*4\\A=12.56[/tex]

Therefore, the area of the circle is 12.56 mm².

I hope this helps!

What are the length and width of the frame?

Answers

{2l+2w=62}

1-2w=1

I don't know the answer its not in my syllabus nor I was thought this one

7. Which equation is graphed below?
A. y = x + 1
B. y = |x|
C. y = [x]+1
D. y =[x]

Answers

Answer:A. I hope this helped you.
Answer A

Set by step explanation: ....

Guys last question pls help

Answers

Answer:

y=-7x-9

Step-by-step explanation:

Find the area of this composite figure.

Answers

Answer:

Step-by-step explanation:

Answer: 40

Step-by-step explanation:

Area of a rectangle: Area = Length x Width

Have to look at it in two different rectangles and add up the areas.

• 8 x 4 = 32

• 2 x 4 = 8

• 32 + 8 = 40

• Area of the figure is 40!

Rayshawn is filling his water jug with water. After one minute, there are 2 gallons
of water in the jug. After two minutes, there are 5 gallons of water in the jug.
After three minutes, there are 8 gallons of water in the jug. If this pattern
continues, how many gallons of water will be in the jug after five minutes?

Answers

Answer:

There will be 20 gallons in this jug after 5 minutes.

Step-by-step explanation:

You are simply adding 3 to each number.

Starts out with 2

+3=5

+3=8

+3=11

+3=14

+3=17

+3=20

Answer:

After 5 minutes there will be 14 gallons of water.

Step-by-step explanation:

The gallons go up by 3. 2+3= 5+3= 8+3= 11+3= 14

After 4new students joined a class the class had 32students which equation can be used to find n the number of students in the class before the 4new students joined

Answers

Answer:

n+4=32 is the answer

Angles A and B are adjacent angles and are supplementary. The measure of ∠A is (3x+10)∘, and the measure of ∠B is (12x+35)∘.

Write an equation that can be used to determine the value of x.
Enter the correct answer in the box.

Answers

Answer:

180=12x+35+3x+10 or 180=15x+45

Step-by-step explanation:

supplementary means that they will add up to equal 180.

Look at the square find the value of C

Answers

Answer:

5

Step-by-step explanation:

Perimeter is created by add all sides together

20 / 4 sides = 5

i think it’s 5. the perimeter is 20 and there’s 4 sides of a square so if u divide 20 by 4 you get 5

What is the volume (in cubic feet) of the composite shape rounded to the nearest whole number?

Answers

Answer:

Peppa does not know

Step-by-step explanation:

Solve the system by substitution.
x= -5y - 6
5x – 3y = -2
What’s is the solution?

Answers

The value of x is -1 and value of y is -1.

What is Equation?

Two or more expressions with an Equal sign is called as Equation.

The given equations are

x+5y=-6...(1)

5x – 3y = -2...(2)

Multiply equation 1 with 5

5x+25y=-30..(3)

Subtract equation 2 and equation 3

5x-3y-5x-25y=-2+30

-28y=28

Divide both sides by 28

y=-1

Now plug in y value in equation 1

x=5-6

x=-1

Hence, the value of x is -1 and value of y is -1.

To learn more on Equation:

https://brainly.com/question/10413253

#SPJ1

Can 0.1/100 be simplified?

Answers

no 0.1/100 cannot be simplified

Answer:

Yes, the answer would be 0.001

Step-by-step explanation:

A rental car company charges $21.45 per day to rent a car and $0.09 for every
mile driven. Aaliyah wants to rent a car, knowing that:
• She plans to drive 475 miles.
. She has at most $150 to spend.
Use the drop-down menu below to write an inequality representing d, the
total number of days Aaliyah can rent the car while staying within her budget.

Answers

Well she we pay 42.75 + 21.45= $64.20 that is what she will pay for the whole ride

Find X (the angle are X, 81, and 84)

Answers

Answer:

15

Step-by-step explanation:

the answer is 15 because a triangle has to equal 180 so all you have to do is add 81 and 84 then subtract 180 from it. like this 81+84=165 180-165=15. Hope this helps.

Help me with this problem

Answers

the answer is 60 since the other shape has same answer for that side

Answer: x=60

Step-by-step explanation:

Hey! X would be 60 because the diagram on the left has proportions of 6/6. The diagram on the right has a porportion of x/60.  We want the proportions to be equal so it has to be 60!

6/6 = 1

60/60 = 1 (they are now equal and have equal proportions!)

1. The average Third grade student can read 60 words in 5 minutes What is the average reading rate per minute?​

Answers

Answer:

12 words per minute

Step-by-step explanation:

60/5=12

12 i think lol it’s 60/5 which is 12

Karen bought 8 pounds of fruit to make 3 equal-sized fruit salads. What is the weight of each fruit salad? 2 pounds 223 2 2 3 pounds 3 pounds 313 3 1 3 pounds

Answers

Answer: 2²/₃ pounds

Step-by-step explanation:

There are 8 pounds of fruit.

These are to be used to make 3 equal sized fruit salad.

The weights of each fruit salad will therefore be:

= Pounds of fruit/ Number of fruit salads

= 8 / 3

= 2²/₃ pounds

Please help right now

Answers

Answer:

C

Step-by-step explanation:

the negative sign in -0.3 implies that it is below and the only answer choice with the word below is

C: New orleans is 0.3m below sea level

The answer is C I did this on my test

I REALLY REALLY NEED HELP ON THIS I DON'T UNDERSTAND IT!!!!!!!!!!!!!!!!!

Answers

Answer:

d

Step-by-step explanation:

in order for it to be a triangle the angles have to add up to equal 180

5+75+100=180 so its not a

10+80+90=180 so its not b

20+60+100=180 so its not c

45+45+45=135 so its d because the angles dont add up to 180

50+50+80=180 so its not e

Answer:

D

Step-by-step explanation:

To be a triangle, you have to have 180 degrees. if you add up all of the sides, it should give you 180. If it doesn't, it isn't a triangle. I hope that helped! :)

Plz consider giving me brainliest answer as I am trying to reach a new level, thanks!

I don't know how to give brainliest tho.

A whole number whose square root is an integer

Answers

Answer:

These are also called "Perfect Squares", and if you're asking what I think you're asking, the first 20 perfect squares are 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225, 256, 289, 324, 361 and 400.

Step-by-step explanation:

The possible integer square root are 0,1,2,3 and 4

A teacher polled her students and determined 37 liked math and 44 liked history.
She has a total of 180 students. If there are 3000 students in the whole school. How
many students could you infer like something other than math and history.

Answers

Answer:

I’m pretty sure it’s 2919 students

Step-by-step explanation:

Ok 37-math

44-history

180 total students

99 students in the total didnt like them

3000 students in school.

-180

2919 students

Combine like terms.
y+3+2(y + 3) =
Please i need this for now

Answers

Answer:

3y+9

Step-by-step explanation:

Can someone please help me​

Answers

Answer:

131.88cm

Step-by-step explanation:

Implement the formula for circumference of a circle:

2×pi(3.14)×r, r= 21cm and pi is given as 3.14. Substitute your given values into the formula above:

2 × 3.14 × 21= 131.88cm to the nearest hundreth

Move words to the blanks and equations to the boxes to prove that vertical angles 21 and 23 are congruent.

Because linear pairs of angles are

and

Because angles that are

to the same angle are

it can be concluded that 21 23.

congruent

m21 +m22 = 180°

supplementary

m22 + m23 = 180°

m2l + m23 = 180°

Answers

Answer:

Because linear pairs of angles are  supplementary. m∠1 + m∠2 = 180° and m∠2 + m∠3 = 180°.

Because angles that are  supplementary to the same angle are congruent. It can be concluded that ∠1 ≅ ∠3.

Step-by-step explanation:

The correct question is attached.

Linear pairs angles are angles which are formed from the intersection of two lines and they are adjacent to each other. Linear pair angles are supplementary.

If angles are supplementary to the same angle, then they are congruent.

∠1 and ∠3 are vertical angles

∠1 and ∠2 form linear pairs while ∠2 and ∠3 form linear pairs. Therefore:

m∠1 + m∠2 = 180° (linear pair angles are supplementary)

m∠2 + m∠3 = 180° (linear pair angles are supplementary)

Hence using transitive property of equality:

m∠1 + m∠2 = m∠2 + m∠3

Using subtraction property of equality by subtracting m∠2 from both sides gives:

m∠1 = m∠3

∠1 ≅ ∠3 (vertical angles are congruent)

Because linear pairs of angles are  supplementary. m∠1 + m∠2 = 180° and m∠2 + m∠3 = 180°.

Because angles that are  supplementary to the same angle are congruent. It can be concluded that ∠1 ≅ ∠3.

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