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
Minchanka [31]
3 years ago
14

For the direct variation such that when y = 2 then x = 3 , find the constant of variation ( k) and then find the value of y when

x = - 0.5.
Mathematics
1 answer:
Sergeu [11.5K]3 years ago
8 0

Answer:

k is 2/3 and y is -1/3 when x is -0.5.

Step-by-step explanation:

The direct variation relationship is y = kx, where k is the const. of var.

Subbing 3 for x and 2 for y, 2 = 3k, or k = 2/3.

Now, if x = -0.5, y = (2/3)(-1/2) = -1/3

k is 2/3 and y is -1/3 when x is -0.5.

You might be interested in
Explain type i error and give an example. explain type ii error and give an example. what is the best way to reduce both kinds o
Leviafan [203]

Type I error says that we suppose that the null hypothesis exists rejected when in reality the null hypothesis was actually true.

Type II error says that we suppose that the null hypothesis exists taken when in fact the null hypothesis stood actually false.

<h3>What is Type I error and Type II error?</h3>

In statistics, a Type I error exists as a false positive conclusion, while a Type II error exists as a false negative conclusion.

Making a statistical conclusion still applies uncertainties, so the risks of creating these errors exist unavoidable in hypothesis testing.

The probability of creating a Type I error exists at the significance level, or alpha (α), while the probability of making a Type II error exists at beta (β). These risks can be minimized through careful planning in your analysis design.

Examples of Type I and Type II error

  • Type I error (false positive): the testing effect says you have coronavirus, but you actually don’t.
  • Type II error (false negative): the test outcome says you don’t have coronavirus, but you actually do.

To learn more about Type I and Type II error refer to:

brainly.com/question/17111420

#SPJ4

7 0
1 year ago
Identify the coefficient(s) and constant(s) in this expression. 9x - 8y + 6
Art [367]

Answer:

the coefficient are 9 and -8

the constant is 6........

8 0
3 years ago
ASAP! A company makes a profit from selling yo-yos at their store. Each yo-yo sells for $8.00 and they must also pay a store cle
dusya [7]

Answer:

The equation that describes the profit the store makes in a day that X units of yo-yo is sold is  P= X × $8.00 - $50.00

Step-by-step explanation:

The information given are;

The price of each yo-yo = $8.00

The only available cost is the store clerk fee cost per day = $50.00

Let us call the number of yo-yo's sold per day as X

Therefore, the amount sold per day = X × $8.00

The company's profit, P = Total sales - Total cost

∴ P= X × $8.00 - $50.00

Therefore, the equation that describes the profit the store makes in a day that X units of yo-yo is sold = P= X × $8.00 - $50.00.

5 0
3 years ago
Write the period that has the number 913
Gala2k [10]
<span>The answer is in the thousands group. Its the way they word the problem that complicates it. 913,256 256 being the ones group 913 being the thousands group. So the name of the period with 913, is the thousands group</span>
4 0
4 years ago
Read 2 more answers
SOMEONE PLSLPLSSLSLS HELP ITS JUST 3 QUESTIONS BRO PLEASE ITS SO CONFUSING ILL BRAINLIST.
Vinil7 [7]

Step-by-step explanation:

a) Perimeter is equal to 2w + 2L

2(3x + 4) + 2(x + 3)

6x + 8 + 2x + 6

8x + 14

b) Put 5 in x's place

8×5 + 14

40 + 14

54

c) Area = (3x + 4) * (x + 3)

Put 4 in x's place

(3×4 + 4) * (4 + 3)

12 + 4 * 7

16 * 7

112

5 0
2 years ago
Other questions:
  • Which sample size will produce the widest 95% confidence interval, given a sample proportion of 0.5?
    10·1 answer
  • X1 + X2 Y1 + y2 2 2. 2 Find the coordinate of the midpoint, M, of segment AB with endpoints A(-4, -8) and B(-1, 4). (1 Point)​
    13·1 answer
  • I WILL AWARD BRAINLIEST! PLEASE HELP ME!
    15·1 answer
  • "If a figure is a square, then it is a regular quadrilateral." Is this true or false? Explain.
    13·2 answers
  • Lisa wrote the following statement:
    9·1 answer
  • What are the ordered pairs of the solutions for this system of equations?
    12·1 answer
  • Jennifer spent $100 at the mall, during tax free weekend.
    15·1 answer
  • Jerry has a square-shaped deep-dish pizza. What is the maximum number of pieces that can be made by using 6 cuts?
    14·2 answers
  • Step by Step What do I do
    8·2 answers
  • Solve for X (step by step please)<br>3 (x - 2) = 4x + 2 <br>[?]x - [ ] = 4x + 2​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!