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
Ilya [14]
3 years ago
11

PLEASE HELP! 48 POINTS! show your work

Mathematics
2 answers:
LekaFEV [45]3 years ago
8 0

Answer:

A Constant of variation is 3

Step-by-step explanation:

Remark

Direct variations have an equation that looks like y = kx There is NO y intercept, or the y intercept = 0. If you solve for the slope of choices B C and D you get a y intercept that is not 0. For example Take C

  • 4y = 5x + 3               Divide both sides by 4 (the coefficient of y)
  • 4y/4 = 5x/4 + 3/4     Do the division
  • y = 1.25 x + 0.75.
  • 0.75 is not zero. This is not a direct variation. The same procedure can be done to B and D with the same results and the same comment.

Solution

Your only possible answer is A

The constant of variation =

  • 4y = 12 x                Divide by 4
  • 4y/4 = 12x/4           Do the division
  • y = 3x                     The coefficient (3) of x is the constant of variation
kolezko [41]3 years ago
4 0

Answer:

a.  4y =12x  the constant of variation is 3

Step-by-step explanation:

The equation for direct variation is y=kx

a.  4y =12x

 Divide each side by 4

4y/4 = 12x/4

 y = 3x

This is direct variation and the constant is 3


Equations b ,c, d  all have a constant added which make them something other than a direct variation

You might be interested in
What is the biggest number possible in life?
Leona [35]
I don't think there is a large number because the numbers never end it expands. Interesting question.
8 0
3 years ago
Select the correct answer.
zhannawk [14.2K]
You have a good day and good luck on that question
8 0
3 years ago
Find the x- and y-intercepts for the linear equation.<br> – 3x + 5y = 15
Paladinen [302]

Answer:

x-intercept: (-5,0)

y-intercept: (0,3)

Step-by-step explanation:

y-intercept: when x = 0

-3(0) + 5y = 15

5y = 15

y = 3

x-intercept: when y = 0

-3x + 5(0) = 15

-3x = 15

x = -5

6 0
2 years ago
Read 2 more answers
If isosceles triangle ABC has a 130° angle at vertex B, which statement must be true?
scZoUnD [109]

Answer:

Option B m<ZA+m<ZB = 155° is correct option.

Step-by-step explanation:

We know that sum of angles of triangle is equal to 180°

And Isosceles triangle, 2 angles are same

So, let  Angle 1 = x

Angle 2 = x

Angle 3 = 130°

Finding values of angle x

x+x+130=180

2x=180-130

2x=50

x=25

So, Angle 1 = 25 °

Angle 2 = 25°

As, angle B is greater than 90°, the sum of angles added must be greater than 90°

So, Option A, C and D can't be correct, as their sum is less than 90°

Option B m<ZA+m<ZB = 155° is correct option.

Verify:

m<ZA = 25° (as found earlier)

m<ZB = 130° (given)

So, m<ZA+m<ZB = 155°

25°+130° = 155°

8 0
2 years ago
Bob decided to go to college, the cost of going to school will be $4,474 per semester, (there are 2 semesters per year) plus $38
SVETLANKA909090 [29]

Answer:

Step-by-step explanation:

1 semester = 4474

8 semester = 8* 4474                    35792

1 semester books = 389

8 semester books = 8* 389            <u> 3112 </u>

Total                                                38904  

If he is going to pay this off in 10 years, he would have to have an increase of 3890.40 (after all income taxes) to pay it off. Fewer years would mean dividing by the number of years.

So for 8 years for example, he would need 4863 every year.

That number is obtained by dividing 38904 / 8

In 6 years he would need

38904/6 = 6484 extra dollars.        

5 0
3 years ago
Other questions:
  • Simplify<br> 8/48<br> 9/54<br> 7/24<br> 21/28<br> 4/6<br> 70/80<br> 6/24
    6·2 answers
  • Karim is ordering video games. Each game costs $39.99, and there is a $4.85 shipping charge per order. How much will it cost him
    11·1 answer
  • A student gets 68 marks n therefore gets 85 percent total marks are?
    7·1 answer
  • Idk what to do helppp?​
    15·1 answer
  • (32 minus 20) divided by 4
    10·2 answers
  • The sum of two numbers is 59 and the difference is 15 . what are the numbers?
    6·1 answer
  • 1. The following system has NO SOLUTION. Explain with specific values why the system has no solutions.
    9·2 answers
  • A delivery truck traveled 1/4 of its route in 2 hour how long will it take to complete one route
    13·1 answer
  • What is <img src="https://tex.z-dn.net/?f=53%2B%283x%2B7%29" id="TexFormula1" title="53+(3x+7)" alt="53+(3x+7)" align="absmiddle
    12·2 answers
  • cho ba điểm M,N,P thẳng hàng , trong đó điểm N nằm giữa hai điểm M,P. Khi đó các cặp vectơ nào sau đây cùng hướng?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!