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
Volgvan
3 years ago
9

If y varies directly as​ x, and y=8 when x=3​, find y when x=15.

Mathematics
1 answer:
Crank3 years ago
8 0

Answer:

y=40

Step-by-step explanation:

The formula for Direct Variation is y=kx or k=y/x. In this case I would use k=y/x. If you're y is 8 and x is 3, this means that K=8/3. Using this, we know that X=15. We have to find a Y value so that the fraction with an x of 15 simplified is 8/3. To do this you would write 8/3 and y/15. Now cross multiply to get 3y=120. Divide by 3 to get y=40. View my attachment for the work!

You might be interested in
Expressions and Equations
marissa [1.9K]

Answer:

a. Yes

b. Yes

c. Yes

d. No

Step-by-step explanation:

a. Because -10x+4x=6x

b. 2(12-3x)=2*12-2*3x=24-6x

c. 24 and -6x just switched places.

d. 24x-6x=18x not 24-6x

3 0
3 years ago
(12x - 30) = (2x - 5)​
zzz [600]

Answer:

x = 5/2

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Algebra I</u>

  • Equality Properties

Step-by-step explanation:

<u>Step 1: Define</u>

12x - 30 = 2x - 5

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Subtract 2x on both sides:                    10x - 30 = -5
  2. Add 30 to both sides:                            10x = 25
  3. Divide 10 on both sides:                        x = 5/2
8 0
2 years ago
Write the definition of a function printarray, which has two parameters . the first parameter is an array of integers and the se
Lady bird [3.3K]
Using pseudocode:

printArray(arr[], integers)
      DECLARE integers
      integers = SizeOf(arr)
      FOR i = 1 to integers // loop from 1 to the number of elements in arr[]
            print(i)
            print('')
            i = i + 1
      ENDFOR
END
7 0
3 years ago
X+5/2 + x−3/3 =3 1/6
Nataly [62]
The answer is x=-1/2
3 0
3 years ago
Read 2 more answers
Calculator
Anna11 [10]

Answer:

The formula to calculate the total surface area of a cylinder is given as, the total surface area of cylinder = 2πr(h + r), while the curved surface area of cylinder formula is, curved/lateral surface area of cylinder = 2πrh, where 'r' is the radius of the base and 'h' is the height of the cylinder.

Step-by-step explanation:

hope it helps you

because I am not getting your answer

6 0
2 years ago
Read 2 more answers
Other questions:
  • A square has a length of 13m, find its area A. 1699m² B. 169m² C. 196m² D. 169m² I will mark you as brainliest
    10·2 answers
  • How do i solve this?
    11·1 answer
  • 8÷2(2+2)= what is the solution​
    12·2 answers
  • Write 6.25 as a fraction 
    10·2 answers
  • The admission to a local carnival is $8.25 per person and $1.50 for each ride. How much more will it cost a group of 3 friends t
    14·2 answers
  • If x = -3, then x^2-7x + 10 equals
    5·2 answers
  • 3/4(-10+2/5) please answer asap
    8·1 answer
  • Can someone help me please
    11·1 answer
  • A die is rolled find the probability of rolling a multipul of 5​
    5·1 answer
  • What’s the Question? Selena ran farther than<br> Manny.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!