All categories

3 years ago

X+2y=13 solve for y.

Mathematics

2 answers:

Ksenya-84 [330]3 years ago

8 0

Answer:

y=-1/2x+6.5

Step-by-step explanation:

x+2y=13

We want to put this in Y=Mx+b form so we need to get Y alone. To do this we must subtract x from both sides

2y=-x+13

Now we must get rid of the 2 so to do that we have to divide 2 to the -x and 13 along with the 2

You then get your final answer of y=-1/2x+6.5

Setler79 [48]3 years ago

5 0

Step-by-step explanation:

So we have the given equation x + 2y = 13

To solve for y, we must first isolate y, so:

x + 2y = 13

2y = 13 - x

$y=\frac{-x + 13}{2}$

Or in point-intercept form:

$y=\frac{-1}{2}x+ \frac{13}{2}$

You might be interested in

The walking distance that is saved by cutting across the lot is

dezoksy [38]

Using the Pythagorean Theorem, we have x^2+(x+2)^2=51^2, and
x^2+ x^2+4x+4=2x^2+4x+4=51^2. After that, we subtract 51^2 from both sides to get 2x^2+4x-2597. Using the quadratic formula (x=(-b+-sqrt(b^2-4ac))/2a in ax^2+bx+c), we get around 35 for x. We did + instead of minus after b due to that it can't be negative! x+2=37, so you save 35+37-51=around 21 feet

8 0

2 years ago

If 1 + + 2 + 3 = 60, then the average (arithmetic mean) of , 2 , 3 , and 4 is equal to what

Zielflug [23.3K]

Step-by-step explanation:

1x+2x+3x=60

x=10

2x+3x+4x=20+30+40=90

average=90÷3=30

3 0

3 years ago

There is a clown's face on the top of a spinner. The tip of his hat rotates to (−2, 5) during one spin. What is the cosine value

uranmaximum [27]

Remark
The point value is (-2,5) So we know the two sides. We need the hypotenuse. We should notice that the x value is minus (-2) and value is y value is plus (5). That means we are in quad 2. Be careful how you read that. (-2,5) is a point. It is not a tangent.

Step One
Find the hypotenuse.

a = - 2
b = 5
c = ??

c^2 = a^2 + b^2
c^2 = (-2)^2 + 5^2
c^2 = 4 + 25
c^2 = 29 Take the square root of both sides.
sqrt(c^2) = sqrt(29)
c = sqrt(29)

Step Two
Find the Cosine of the angle.
Cosine(theta) = adjacent / hypotenuse
Cosine(theta) = -2 / sqrt(29) <<<<<<< Answer

Again, watch out for what you are given.

6 0

2 years ago

The length of the major axis of the ellipse below is 17 and the length of the red line segment is 6. How long is the blue line s

KatRina [158]

Answer:

Option B. 11

Step-by-step explanation:

See the attached figure

As the figure about an ellipse

So, The sum of distance between A and the foci will be equal the major axis

AB = 6 and the major axis = 17

∴ AB + AC = major axis

∴ 6 + AC = 17

∴ AC = 17 - 6 = 11

So, the length of the blue line segment = 11

5 0

3 years ago

18x + 101 = 4 91 – 51'= -1 help me pleasee

juin [17]

Distribute the -9 into the values in the parentheses.

STEP BY STEP

-9(-2x-3)

-9*-2x=18x

-9*-3=27

Therefore, the equation then becomes: 18x+27.

The answer is the first choice, or A.

3 0

2 years ago