Transform the equation x-3y=-15 to express it in slope-intercept form

Answers

Answer 1
Answer:

The equation x - 3y = -15, when expressed in slope-intercept form, becomes y = (1/3)x + 5.

To express the equation x - 3y = -15 in slope-intercept form, which is y = mx + b, where m represents the slope and b represents the y-intercept, we need to isolate y on one side of the equation.

Let's begin by moving the x term to the other side of the equation:

x - 3y = -15

Subtracting x from both sides, we have:

-3y = -x - 15

Next, we divide both sides by -3 to isolate y:

y = (1/3)x + 5

Now, the equation is in slope-intercept form. The coefficient of x, which is (1/3), represents the slope of the line. In this case, the slope is positive (1/3), indicating that as x increases by 1 unit, y increases by (1/3) unit. The y-intercept, which is the value of y when x is 0, is 5. This means the line crosses the y-axis at the point (0, 5).

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Answer 2
Answer: x-3y=-15
-3y=-x-15
-1(-3y=-x-15)
3y=x+15
3/3y=1/3x+15/3
y=1/3x+5

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Mrs. Daniel pays $324 for a handbag and 3 pairs of shoes. The handbag costs half as much as the 3 pairs of shoes combined. Find the cost of the handbag.

In order to prove a conjecture is always true, you must show? A.) a formal proof
B.) a counterexample
C.) several true examples
D.) an informal proof

Answers

In order to prove a conjecture is always true is formal proof.

We have given that,

A.) a formal proof

B.) a counter-example

C.) several true examples

D.) an informal proof

We have to prove a conjecture is always true

In order to prove a conjecture is always true, you must show formalproof.

What is the conjecture?

A conjecture is a conclusion or a proposition that is proffered on a tentative basis without proof.

Therefore the first option is correct.

In order to prove a conjecture is always true is formal proof.

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Answer: A- a formal proof

Step-by-step explanation:

just is

Evaluate 8P4 how can I evaluate this problem

Answers

Answer:

^8P_4=1680

Step-by-step explanation:

Given: ^8P_4

Formula:

^nP_r=(n!)/((n-r)!)

It is permutation formula which helps to find number of arrangement.

If we have three digits and to find how many different three digit number be form. We can find using permutation.

Using formula,

^nP_r=(n!)/((n-r)!)

^8P_4=(8!)/((8-4)!)

^8P_4=(8!)/(4!)

^8P_4=(8* 7* 6* 5* 4!)/(4!)

Cancel 4! from top and bottom

^8P_4=8* 7* 6* 5

^8P_4=1680

Hence, The value of ^8P_4 is 1680

The required, permutation 8P4 is equal to 1,680.

"P" stands for permutation, which represents the number of ways to arrange objects in a specific order. The formula for permutations is:

nPr = n! / (n - r)!

Using the formula, we have:

8P4 = 8! / (8 - 4)!

= 8! / 4!

= (8 x 7 x 6 x 5 x 4!) / 4!

= (8 x 7 x 6 x 5)

= 1,680

Therefore, 8P4 is equal to 1,680.

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The registrar keeps an alphabetical list of all undergraduates, with their current addresses. Suppose there are 10,000 undergraduates in the current term. Someone proposes to choose a number at random from 1 to 100, count that far down the list, taking that name and every 100th name after it for the sample. a) Is this a probability method?
b) Is it the same as simple random sampling?
c) Is there selection bias in this method of drawing a sample?

Answers

Answer:

The answer to this question can be defined as follows:

Step-by-step explanation:

Following are the description of the given points:

(a) This is a system of probability, which possibility occurs inside an intended manner whenever they choose this specific point of origin from 1 to 100 with no one reserve the possibility about who gets throughout the survey.  

(b) Its method is different from the random sampling technique with the base available. For example, two individuals whose names identical to both the list have no chance to join within the survey.  

(c) its sample is objective to its everyone can enter the test in equal measure.

Please Help me ASAP Just answers please ;)

Answers

Answer:

C

Step-by-step explanation:

< means exclusive, so open hole

≤ means inclusive, so closed dot

also, you can see that the values for y are going down, like 6, 4, 2. That's only in answer C.

Johanna purchases a book for $14.95. There is a sales tax of 6.5%. How much is the final price with tax? What is the total? What is the percent? Use the formula amount = total x percent to find the amount of the sales tax. To find the final price, add the cost of the book to the amount of tax.

Answers

Answer:

Tax = $0.97175

Final Price = $15.92175

Step-by-step explanation:

To calculate the amount of tax of an amount you just must multiply this figure by the percentage of the tax expressed in decimal numbers.

-----------------------------------------------------------------------------------------------

Data:

Price = $14.95

Tax rate = 6.5%

-----------------------------------------------------------------------------------------------

Calculation of tax:

amount = total x percent = $14.95 x 6.5% = $14.95 x 0.065 = $0.97175

Calculation of the final price with tax:

Amount = book cost + tax = $14.95 + $0.97175 = $15.92175

-----------------------------------------------------------------------------------------------

Tax = $0.97175

Final Price = $15.92175

-----------------------------------------------------------------------------------------------

Hope this helps!

Okay so 6.5%  of $14.95 is 0.97175. That rounds to 0.97. And to get the total we just add 0.97 to 14.95. Our answer is 15.92. However if you don't want to round then you would add 14.95 and 0.97175 . This would give you15.92175. Hope this helps!

What is the factored form of 8x2 + 12x?A.4(4x2 + 8x)
B.4x(2x + 3)
C.8x(x + 4)
D.8x(x2 + 4)

Answers

the factored form is B. 4x(2x+3)