What is the y- intercept of –3x – 9y = 18? a. 2 b. -2 c. 6 d. -6

QUESTION POSTED AT 19/08/2019 - 05:51 PM

Answered by answersmine AT 19/08/2019 - 05:51 PM

Rearrange the equation to the form:
y = mx + b
where b is the y-intercept.
-3x - 9y = 18
-9y = 3x + 18
y = -(x/3) - 2.
The answer is b. -2.
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QUESTION POSTED AT 23/09/2019 - 04:26 AM

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(2,1) is the solution because its where they both intersect..

ANSWERED AT 23/09/2019 - 04:25 AM


QUESTION POSTED AT 23/09/2019 - 04:25 AM

On a recent day, 8 euros were worth $9 and 24 euros were worth $27. Write an equation of the form y = kx to show the relationship between the number of euros and the value in dollars.

Y = kx
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so we have
9 = k(8)
k = 1.125
so the equation will be  y = 1.125x
to prove it use another value given
y = 1.125x
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Hence the equation y =1.125x is correct.          

ANSWERED AT 23/09/2019 - 04:25 AM


QUESTION POSTED AT 23/09/2019 - 04:25 AM

How many terms are in the exspression 2x+3y-4z

There are 3 terms in you math subjected question, hope this helps!

ANSWERED AT 23/09/2019 - 04:24 AM


QUESTION POSTED AT 23/09/2019 - 04:24 AM

Which number is a factor of 18 but not a multiple of 3?

1 and 2 are both factors of 18 but not multiples of 3 .

ANSWERED AT 23/09/2019 - 04:24 AM


QUESTION POSTED AT 23/09/2019 - 04:24 AM

Rewrite the equation 8x-3y-5 -0 in slope intercept form

If the equation is 8x-3y-5=0 
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ANSWERED AT 23/09/2019 - 04:23 AM


QUESTION POSTED AT 23/09/2019 - 04:23 AM

Scott's bill for brunch at a restaurant was $17. He left an 18% tip. What was the total cost of his brunch,including tip?

17 times 18/100 = 3.06
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which is 20 dollar and 6 cents

ANSWERED AT 23/09/2019 - 04:21 AM


QUESTION POSTED AT 23/09/2019 - 04:21 AM

How do you find slope and y-intercept form in a word problem?

You can find slope by using slope formula which is 
m = (y2-y1)/(x2-x1)
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y = mx+c

ANSWERED AT 23/09/2019 - 04:20 AM


QUESTION POSTED AT 23/09/2019 - 04:20 AM

Is -6 greater or less than -4?

-6 is less then -4
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ANSWERED AT 23/09/2019 - 04:19 AM


QUESTION POSTED AT 23/09/2019 - 04:19 AM

A parábola has an axis of symmetry x = -2 and passes through the point (-5,6). Find another point that lies on the graph of the parabola

There will always be a point symmetrical to the given point on the other side of the parabola.
To find that other point, know that the perpendicular distance to the line of symmetry is the same for both points.
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The perpendicular (shortest) distance from (-5,6) to the line (-2,6) is the change in x coordinates, or absolute value difference in x coordinates. |-5--2| = 3.
Then go 3 units to the right of (-2,6) to find the other point because the other symmetrical point also is the same distance to the middle point (-2,6). The answer is (1,6)

ANSWERED AT 23/09/2019 - 04:19 AM


QUESTION POSTED AT 23/09/2019 - 04:19 AM

How to simplify 4d + 3x - d + 2x

Combine like terms

4d - d
and
3x + 2x

so,

The answer is,
3d +5x

ANSWERED AT 23/09/2019 - 04:17 AM


QUESTION POSTED AT 23/09/2019 - 04:17 AM

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The slope is 2.6 well it originally came out to be 2.583333333 but rounded it off to 2.6, the equation is y= 2.6x + 3.2, you have to graph it to find the y intercept. i'll be really sorry if you get it wrong, haven't solved an equation like this in a while

ANSWERED AT 23/09/2019 - 04:16 AM


QUESTION POSTED AT 23/09/2019 - 04:16 AM

What is -2 2/5 as a improper fraction?.

5/5 or 12/5 one of those to your welcome hope this helps

ANSWERED AT 23/09/2019 - 04:10 AM


QUESTION POSTED AT 23/09/2019 - 04:10 AM

Solve the equation: 3x-5 4x+1 ------- = -------- 2 4

Cross multiply 3x-5 with 4 and 4x + 1 with 2
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ANSWERED AT 23/09/2019 - 04:10 AM


QUESTION POSTED AT 23/09/2019 - 04:10 AM

Completely factor the expression 27x^6-y^3

27x^6-y^3 3^3(x^6)-y^3 (3x^2)^3-y3 Answer:(3x^2-y)(9x^4+3x^2y+y^2)

ANSWERED AT 23/09/2019 - 04:09 AM


QUESTION POSTED AT 23/09/2019 - 04:09 AM

The quotient of y and 3 is 25

Answer:

\frac{y}{3} = 25  ,  y = 75 .

Step-by-step explanation:

Given  : quotient of y and 3 is 25.

To find : solve for y.

Solution : We have given statement quotient of y and 3 is 25.

According to question

quotient of y and 3 can be written as  \frac{y}{3}.

Then ,

\frac{y}{3} = 25

On multiplying  by 3 both sides

y = 25 *3

y = 75 .

Therefore,   \frac{y}{3} = 25  , y = 75 .

ANSWERED AT 23/09/2019 - 04:07 AM


QUESTION POSTED AT 23/09/2019 - 04:07 AM

One way to remember that polynomial functions and exponential functions are different is to contrast the polynomial function y=x^2 and the exponential function y=2x. tell at least three ways they are different

A polynomial function is a relation between one variable to another variable with some restrictions to limit its behavior. In simpler terms, a polynomial function is simply a subset of functions altogether. Polynomial functions are special in that they contain zero discontinuities in their behavior, have distinct  features have end behaviors that approach infinity. These functions are excellent for demonstrating real life situations, such as banking trends.

ANSWERED AT 23/09/2019 - 04:06 AM


QUESTION POSTED AT 23/09/2019 - 04:06 AM

Write a real-world problem that could be represented by the inequality. 3x + 6 > 27

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ANSWERED AT 23/09/2019 - 04:05 AM


QUESTION POSTED AT 23/09/2019 - 04:05 AM

Bob has some 10 lb weights and some 3 lb weights. Together, all his weights add up to 50 lbs. If x represents the number of 3 lb weights and y represents the number of 10 lb weights, which equation can be used to find the number of each type of weight Bob has?

Answer:

            3 x + 10 y = 50

This is the equation which can be used to find the number of each type of weight Bob has.

Step-by-step explanation:

Bob has some 10 lb weights and some 3 lb weights. Together, all his weights add up to 50 lbs.

Let x represents the number of 3 lb weights and y represents the number of 10 lb weights

Total weight = 50 lb

Number of 3 lb weights = x

Number of 10 lb weights = y

Equating

            3 x + 10 y = 50

This is the equation which can be used to find the number of each type of weight Bob has.

ANSWERED AT 23/09/2019 - 04:04 AM


QUESTION POSTED AT 23/09/2019 - 04:04 AM

Show the tens fact you used.wrute the difference 14-6= 10- =

4 =6 the difference is 4 and the difference is 6

ANSWERED AT 23/09/2019 - 04:04 AM


QUESTION POSTED AT 23/09/2019 - 04:04 AM

Factorize 2y(2)+3y Could u guys help me with this please.......please

2y(2)+3y
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Hope it helps :]

ANSWERED AT 23/09/2019 - 04:03 AM


QUESTION POSTED AT 23/09/2019 - 04:03 AM

12, 26, 18, 8, 80, 14, 56, 16 The data above shows the number of points scored by each player on a basketball team during a regional tournament. Jennie sampled three of the players and got a mean score of 14. Charles sampled three players and got a mean score of 54. Explain the difference in the two sample means.

Answer:

he sample means show a large variation because the data set has a large range. When there is a large variation in the data set, the sample means also will have a large variation. Jennie included low values in her sample, while Charles included high values.




Step-by-step explanation:


ANSWERED AT 23/09/2019 - 04:03 AM


QUESTION POSTED AT 23/09/2019 - 04:03 AM

Please Solve This Equation t/6 = 12 A) 72 B) 36 C) 18 D) 2

So if t/6=12, then multiply both sides by 6 so you get t=12*6 or t=72 (choice a)

ANSWERED AT 23/09/2019 - 04:02 AM


QUESTION POSTED AT 23/09/2019 - 04:02 AM

20 (2y + 2) +120=? How do I find "y" ?

20(2y+2)+120=
   40y+40+120=
         40y+160=
                -160      -160
                   40y=-160
                  divide by 40 on both sides
                    y=-4

ANSWERED AT 23/09/2019 - 04:02 AM


QUESTION POSTED AT 23/09/2019 - 04:02 AM

Identify the y-intercept. tell what the y_intercept means in this context

The y intercept is where the line crosses the y axis
in form
y=mx+b
b is the yintercept

ANSWERED AT 23/09/2019 - 03:59 AM


QUESTION POSTED AT 23/09/2019 - 03:59 AM

What is 0.684 divided by 18

.038 because 18 goes into 68 3 times which gives a remainder of 14 then bring down the 4 to get 144 and 144/18 is 8 which gives you a quotient of 38 then add in the three decimal places to get .038

ANSWERED AT 23/09/2019 - 03:59 AM


QUESTION POSTED AT 23/09/2019 - 03:59 AM

What percent of 40 is 18

First, make 18 and 40 into a fraction which is 18/40
Then, simply 18/40 ÷ 2 top and bottom which is 9/20
Finally, make an equation of 9/20 = blank/100
20×5=100 9×5=45 Your answer is 45/100

45% is your answer

ANSWERED AT 23/09/2019 - 03:59 AM


QUESTION POSTED AT 23/09/2019 - 03:59 AM

Please help me, I don't understand literally any of this. # 1-6

1. y = x
y = 2x - 4

Locate the point of intersection of the 2 graphs. This is the solution set of the graphs, that is: (x, y) = (4, 4).

Solution set: (x, y) = (4, 4)

2. y = - \frac{1}{2} x + 5
y = 3x - 2

Locate the point of intersection of the 2 graphs. This is the solution set of the graphs, that is: (x, y) = (2, 4)

Solution set: (x, y) = (2, 4)

3. y - 2x = 4
y = 2x

Locate the point of intersection of the 2 graphs. The 2 lines are parallel so they do not intersect and therefore no solution set exists for the given set of equations.

Solution set: Does not exist.

4. y - 4x = 8
y = 2(2x +4)

Locate the point of intersection of the 2 graphs. The 2 lines are completely overlapping each other so they intersect intersect at infinite points and therefore infinite solutions exist for the given set of equations.

Solution set: Infinite solutions

5. x + y = 3
y = -3(2x - 1)

Locate the point of intersection of the 2 graphs. This is the solution set of the graphs, that is: (x, y) = (0, 3)

Solution set: (x, y) = (0, 3)

6. -x + y = -2
y = 2

Locate the point of intersection of the 2 graphs. This is the solution set of the graphs, that is: (x, y) = (4, 2)

Solution set: (x, y) = (4, 2)

ANSWERED AT 23/09/2019 - 03:59 AM


QUESTION POSTED AT 23/09/2019 - 03:59 AM