1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mars1129 [50]
4 years ago
5

If w varies jointly as x and y when w = 12, x = 2, and y = 18, what is the value of y when w = 16 and x = 6?

Mathematics
2 answers:
polet [3.4K]4 years ago
8 0
The answer is eight
hichkok12 [17]4 years ago
7 0
Joint variation means that w=kxy where k is constant.
Finding k:
12=k*2*18
12=36k
k=1/3

Now plug in second set of values
16= 1/3*6*y
16=2*y
y=8

Final answer: 8
You might be interested in
Write an equation for this situation.
kirza4 [7]
Answer: A) y = 3x + 2

Step-by-Step Explanation:

Let ‘x’ be the number of months
Let ‘y’ be the total no. of books he read

Given:

He read 2 books before joining (+2)
He plans to read 3 books per month (3x)

Equation:

= Total no. of books = 3 multiplied by the no. of months + 2 books he had read

=> y = 3x + 2

3 0
2 years ago
What is the sum of 3m + 7y + 5 - m - 6y?
nevsk [136]
3m + 7y + 5 + -1m + -6y = 0
Reorder the terms:5 + 3m + -1m + 7y + -6y = 0
Combine like terms: 3m + -1m = 2m5 + 2m + 7y + -6y = 0
Combine like terms: 7y + -6y = 1y5 + 2m + 1y = 0
Solving5 + 2m + 1y = 0
Solving for variable m'.
Move all terms containing m to the left, all other terms to the right.
Add '-5' to each side of the equation.5 + 2m + -5 + 1y = 0 + -5
Reorder the terms:5 + -5 + 2m + 1y = 0 + -5
Combine like terms: 5 + -5 = 00 + 2m + 1y = 0 + -52m + 1y = 0 + -5
Combine like terms: 0 + -5 = -52m + 1y = -5
Add '-1y' to each side of the equation.2m + 1y + -1y = -5 + -1y
Combine like terms: 1y + -1y = 02m + 0 = -5 + -1y2m = -5 + -1y
Divide each side by '2'.m = -2.5 + -0.5y
Roots  m=-2.5 + -0.5y

Simplify the following:3 m + 7 y + 5 - m - 6 y
Grouping like terms, 3 m + 7 y + 5 - m - 6 y = (7 y - 6 y) + (3 m - m) + 5:(7 y - 6 y) + (3 m - m) + 5
7 y - 6 y = y:y + (3 m - m) + 5
3 m - m = 2 m:Answer:  y + 2 m + 5
Not sure what you need so I gave you Simplification and Roots.


8 0
3 years ago
What is the unit rate of 25/11
AnnyKZ [126]
What is the unit rate of 25/11?

25/11

25 ÷ 11 ≈ 2.27

2.27/11

<span>25/11 unit rate it 2.27/1, or 2.27 per 1.</span>

5 0
3 years ago
The volume of a pyramid with a square base is given by the expression 1/3s^2h, where s is the length of a side of the base and h
Ray Of Light [21]
The volume is 480 ft3}
the height is 60 ft

6 0
3 years ago
Read 2 more answers
A car valued at $14,000 depreciated 18% per year. After how many years will the value have depreciated to $1000?
jok3333 [9.3K]

Answer:

Little more than 5 years

Step-by-step explanation:

Given the following question:

Original value of the car is $14,000
18% depreciated or diminish in value per year.

How many years would it take for the cars value to reach $1000?

To find the answer we must first find 18% of the 14,000 speaking how that's how much the car value diminishes in a year.

<u>18% of 14000:
</u>\frac{p\times n}{100}
\frac{18\times14000}{100} =18\times14000=252000\div100=2520
=2520

18% of 14000 is 2520, which means each year the cars value depreciates $2520 dollars.

14000-2520=11480-2520=8960-2520-6440-2520=3920-2520=1400
=1400

Which means it will take a "little more than 5 years" for the cars value to reach $1000.

Hope this helps.

5 0
2 years ago
Other questions:
  • A rectangular garden must have a perimeter of 160 feet and an area of at least 1300 square feet. Describe the possible lengths o
    9·2 answers
  • How to express 1/243 using a negative exponent other than -1
    14·1 answer
  • A freshly-planted sapling is braced by 3 cables attached to a collar secured to the sapling 8 feet up the trunk. each cable is s
    6·1 answer
  • Please help I will mark brainliest. Part 1: What is the correct standard form of the equation of the parabola?
    13·1 answer
  • If 7^9/7^n = 7 3, then n is _____. <br> A) -3<br> B) 3<br> C) 6<br> D) 12
    8·2 answers
  • A watering can contained 512 quarts water. After all the plants were watered, only 4 cups remained. How many cups of water were
    10·2 answers
  • Write an equation of the line that<br> passes through (-1,2) with a slope of 4
    10·1 answer
  • Which statement is not true about the pattern shown?<br> 2 4 8 16<br> 3: 612' 24'
    7·2 answers
  • Mrs. Reyes asked 3 girls and 4 boys to help with a project. She had each student make 8 paper airplanes. Drag steps to show how
    6·1 answer
  • The cost of 2.25
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!