Mathematics High School

Using the formula y = kx
If y is 27 when x is 3, what is the constant of variation?

Answers

Answer 1

Answer:

y=kx

y/x=kx/x (divided both side by x to find k)

k=y/x

k=27/3

k=9.

Related Questions

Camillo estimates the weight of his dog. The veterinarian says that the dog weighs 84 pounds. The percent error in Camillo's estimates is less than 10%.

Decide whether each of the following weight estimates could have been Camillo's estimate.
a. 80 pounds yes or no
b. 78 pounds yes or no
c. 94 pounds yes or no
d. 77 pounds yes or no
e. 92 pounds yes or no
f. 75 pounds yes or no

Answers

Answer:

A.Yes B.Yes C.No D.Yes E.No F.No

Step-by-step explanation:

10% of 84 is 8.4 and 84-8.4=76.6 and anything between 76.6-84 could have been the estimate.

Brandon brought 21 chicken wings for $39.90 how much would it cost for 15 wings ​

Answers

Answer:

$28.50

Step-by-step explanation:

39.90/21= $1.9 per wing

1.9 x 15 wings= $28.5

Answer:

$28.5

Step-by-step explanation:

Given

21 chicken wings bought on =$39.90

Solution

So 1 wings bought on=$39.90/21

=$1.9

So 15 wingi bought on =15×1.9

=$28.5

Answer is $28.5.

6. Talia hiked 4 miles from her house, and stopped to eat
lunch. Then she hiked back to where she started. Complete
the graph. Show the distance from Talia's house compared
to the time that she took.
7. Use your graph to find the total number of
miles Talia hiked.

Answers

Answer: I think it’s 8 miles

Step-by-step explanation: since she hiked 4 miles and she has to go back to her house so that’s another 4 miles so 4+4= 8 miles

what is 4a+9b if a=7 and b=10?

Answers

Answer:

homie dont play

Step-by-step explanation:

The answer is 118 you plug in the numbers where the variables are!

Complete the tables of values.

Answers

Answer:

a= 1 b= 0.0625 c= 0.0039 d= 1 e=0.4444 f= 0.1975

Step-by-step explanation:

Plug the x into the equation

whats the ration of 2 feet to 39 inches​

Answers

Answer:

63 inches

Step-by-step explanation:

that's what I got.

What is 4 x 2 3/7? I really need your help do you know what the answer is...

Answers

Answer: 68/7 or 9 5/7

Step-by-step explanation:

Can 27 go into 2 3 4 5 8 9 10

Answers

it can go into 3 and 9

please help i’m confused and caught corona virus

Answers

Answer:

76⁰ is the answer to the top one

A charity marathon in Keller is 26.2 miles. There are approximately 1.61 kilometers in 1 mile. Which measurement is closest to the numbers of kilometers in the charity marathon?

Answers

Answer:

42.182km

Step-by-step explanation:

From the question, we know :

There are approximately 1.61 kilometers in 1 mile.

A charity marathon in Keller is 26.2 miles.

The measurement that is closest to the numbers of kilometers in the charity marathon is:

1 mile = 1.61 km

26.2 mile = x km

Cross Multiply

1 mile × x km = 26.2 mile × 1.61 km

= 42.182 km

The number of kilometers in the charity marathon is 42.182km

A jet left the airport eight hours before a passenger plane. The planes flew in opposite directions. The passenger plane flew at 170 mph for four hours. After this time the planes were 4340 mi. apart. What was the jet's speed?

Answers

Answer:

The jet was traveling at 244.5 mph

Step-by-step explanation:

170x4=428

4340-428=3912

3912/4=978

978/4=244.5

rewrite as a sum[tex](2x^2-11)(x^2+2)[/tex]

Answers

Answer:

Step-by-step explanation:

(2x^2-11)(x^2+2)

2x^4-7x^2-22

Please Help ASAP!! Look at image.

Answers

Answer:

Quadrinomial/Quartic Polynomial

Step-by-step explanation:

Quadri- and quartic is a prefix that means 4 of something or 4 parts and there are 4 terms in that polynomial. However, to be more specific, that is a 4th Degree Quadrinomial because the greatest exponent is 4.

5 is 2% of what number?

Answers

Answer:

250

Step-by-step explanation:

2% of 250 is 5. Hope this helps!

The equation f = v + at represents the final velocity of an object, f, with an initial velocity, v, and an acceleration rate, a, over time, t. Which is an equivalent equation solved for a?

StartFraction f minus v Over t EndFraction equals a. = a
StartFraction f Over t EndFraction plus v equals a.– v = a
StartFraction f plus v Over t EndFraction equals a. = a
StartFraction f Over t EndFraction plus v equals a.+ v = a

Answers

Answer:

StartFraction f minus v Over t

EndFraction =a

Step-by-step explanation:

The equation for acceleration is a= f-v

                                                             -----

                                                                t

Rearrange f=v+at

solve for a

f= v+at   minus v

-v -v

get a by itself. multiplication is happening a between and t so divide

f-v=at

---   ---

 t    t

a= f-v

    ----

      t

Answer: The answer would be A

Step-by-step explanation: Got it correct in edge

1. How much of the earth’s surface is covered with water?

Answers

Answer:

Step-by-step explanation:

70%

71% ... Water covers about 71% of the earth's surface. 97% of the earth's water is found in the oceans (too salty for drinking, growing crops, and most industrial uses except cooling). 3% of the earth's water is fresh.

I need help
Peter is replacing five broken sections of the picket fence around his house. The length of each section is between 7 and 9 feet, and the height of each section is between 3 and 5 feet. Peter estimates the area of the five sections that need to be replaced to be 200 square feet. Is this a reasonable estimate?

Answers

In this question, we want to evaluate how reasonable is an estimate made by Peter.
To do this, we need to have a range , with the boundaries of the range being the lowest expected area and the highest expected areas respectively.
The lowest expected area would take into recognition the lest length and height which is just 3 by 4 . The area of a section here is thus 3 * 4 = 12 sq.feet
Since there are 5 sections, the total area here is thus 12 * 5 = 60 sq.feet. This is the minimum total area of the sections
For the maximum, we compute the area of the sections using the highest length and height. This is 5 by 6. The area here would be 5 * 6 = 30 sq.feet . Since there are 5 sections, the total area here would be 30 * 5 = 150 sq.feet
Hence, we have the area falling between 60 sq.feet and 150 sq.feet
Since the estimates fall between the boundaries and in fact is closer to the maximum, it is a good estimate

In the figure below, g || 1. Find the values of y and x.
​

Answers

Answer:

x = 26 degrees.

y = 106 degrees.

Step-by-step explanation:

3x - 4 = 74  (exterior alternate angles).

3x = 78

x = 26.

y = 180 - 74 = 106.

Dan is watching the birds in his backyard. Of the birds he watches, 9 of them, or 45%, are sparrows. How may birds are in his backyard?

Answers

Answer:

5

Step-by-step explanation:45 divided by 9 is 5

Answer:

20 birds in the backyard.

Step-by-step explanation:

A color printer can print 36 pages in 3 minutes and 108 pages in 9 minutes. If the pages varies directly with the time, at what rate is the color printer printing

Answers

Answer:

12 pages a minuet

Step-by-step explanation:

all you would do is divide 36 by 3 or 108 by 9 which simplifies down to 12 pages every minuet  

How long is the diagonal of a 9inch by 40 inch rectangle

Answers

Answer:

The Answer is 360

Step-by-step explanation:

cause u got to multiple

Answer:

around 29.7

Step-by-step explanation:

We can make a rectangle two tringles

Using a^2 + b^2 = c^2 we can find the diagonal

40^2 + 9^2 = c^2

800 + 81 = c^2

sqrt 881 is 29.6816442

we can round this to around 29.7

Can someone help me!!
​

Answers

Answer:

5 sessions

Step-by-step explanation:

For this problem, we will simply take the total cost for each gym and set them equal to each other with the missing amount of sessions represented as x.

25 + 30x = 75 + 20x

Now, we will solve for x to find how many sessions it would take for these two total costs to be equal.

25 + 30x = 75 + 20x

10x = 50

x = 5

So after 5 sessions, Ms. Pictum will have spent the same amount at both gyms.

Cheers.

Answer:

4 personal training sessions

Step-by-step explanation:

$25 + $30 = the month membership + 1 training session = $55

$75 + $20 = the month membership + 1 traing session = $95

then you would add every time she went to get a training session till you get the same number

$55 + $30 = 2 sessions and so on

$95 + $20 = 2 sessions and so on

Pls helppp u don’t want to fail

Answers

Answer:

A

Step-by-step explanation: 30/2 give you 15!

Dale earns $3 more per hour! I hope this helps!

need help with 6 dont know it

Answers

Answer:

It should be 42.25 instead

Step-by-step explanation:

Pretty sure it’s D
Since 180 -95.5 is 84.5 then divide by 2 since both sides are the same. You get 42.26

A rectangular field is 90 yards long and 60 yards wide.Give the length and width of another rectangular field that has the same perimeter but a larger area.

Answers

Answer:

The length and width of another rectangular field with same perimeter but a larger area is 80 m by 70 m

Step-by-step explanation:

The perimeter of the existing field is

2(l + b)

= 2(90 + 60) = 2(150) = 300 yards

So we want another field having the same perimeter but a larger area

The area we have here is 90 * 60 = 5,400 square yards

If we had 80 by 70

Perimeter will still be 2(70 + 80) = 150

But the area will be 80 * 70 = 5,600 square yards




Help is it b???????????????

Answers

Answer:

D

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Vertically opposite angles are equal

anyone know how to solve this?

Answers

Answer:

x = [tex]\sqrt{66}[/tex]

Step-by-step explanation:

This is using the altitude on hypotenuse theorem

(leg of big Δ )² = ( part of hypotenuse below it ) × ( whole hypotenuse )

x² = 6 × (6 + 5) = 6 × 11 = 66 ( take square root of both sides )

x = [tex]\sqrt{66}[/tex]

Answer:x = ≤∫⇄

Step-by-step explanation:

i think im wrong and other guy is right

is -45.2 an integer​

Answers

Answer:

yes it is sis

Step-by-step explanation:

hope this helps

have a good one yall

im brooke btw

TRYNNA FINISH THIS .. ILL MARK THE BRAINLIEST

Answers

Answer:

A

Step-by-step explanation:

1 pound = 16 ounces

so pounds are multiplied by 16 to convert to ounces

A u have to multiply pounds by 16 to convert to ounces

please help me thank you :)

Answers

Answer:

use google  

Step-by-step explanation:

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