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DerKrebs [107]
3 years ago
12

2x - 5y = - 15

Mathematics
2 answers:
RSB [31]3 years ago
8 0

Answer:

y = \frac{2}{5} x + 3

Step-by-step explanation:

2x - 5y = -15

Firstly, you will need to isolate the variable you are solving for, in this case, y.

2x - 2x - 5y = -15 - 2x

-5y = -15 - 2x

-5y/-5 = -15/-5 - 2x/-5

A negative divided or multiplied by a negative is positive.

y = 3 + \frac{2}{5} x

Rearrange.

y = \frac{2}{5} x +3

UkoKoshka [18]3 years ago
7 0

Answer:

2x+15=5y

y=(2x+15)/5

hope this helps

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The endpoints of the diameter of a circle are (−2, −3) and (4, −1). Which equation represents the circle?
Alika [10]

Answer:

The equation of circle is (x-1)^{2}+(y-2)^{2} = 18

Step-by-step explanation:

Given the endpoints of the diameter of a circle: (-2,-3) and (4,-1)

We know that the equation of circle is

(x-h)^{2} + (y-k)^{2}= r^{2}

where (x,y) is any point on the circle, (h,k) is center of the circle and r is radius of circle.

To find (h,k): the center is midpoint of diameter

Midpoint of diameter with end points (x1,y1) and (x2,y2) is given by

(  \frac{x1+x2}{2} , \frac{y1+y2}{2}  )

( \frac{-2+4}{2} , \frac{-3-1}{2}  )

(1,2)

Hence (h,k) is (1,2)

Substituting values of (h.k) and (x.y) as (1,2) and (4,-1) respectively in equation of circle, we get

(4-1)^{2} +(-1-2)^{2} = r^{2}

r^{2} = 18

Now substituting values of (h,k) and r^{2} in equation of circle, we get

(x-1)^{2}+(y-2)^{2} = 18

Hence the equation of circle is (x-1)^{2}+(y-2)^{2} = 18

5 0
3 years ago
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ohaa [14]
To start, we're given the range that x lies in: from -1 to 4. We know from the fact that -1 \leq x that -1 will be <em /><em>included</em> in that range, so we mark -1 on the number line with a solid circle. We also know from x\ \textless \ 4 that, while x can be any value <em>up to</em> 4, it does not <em>include </em>4. We indicate this by drawing a hollow circle around 4 on the number line. Since x can be <em>any value within this range</em>, we make that fact clear by drawing a bold line between the points -1 and 4 on the number line. I've attached an image of what our final graph would look like.

5 0
3 years ago
-377 = x - 1,000 i dont under stand it
Naddika [18.5K]

Answer:

\boxed {x = 623}

Step-by-step explanation:

Solve for the value of x:

-377 = x - 1,000

-Switch sides:

-377 = x - 1,000

x - 1,000 = -377

-Add 1,000 on both sides:

x - 1,000 + 1,000 = -377 + 1,000

\boxed {x = 623}

Therefore, the value of x is 623.

4 0
3 years ago
Need Help ASAP WILL GIVE BRAINLIEST
Bad White [126]

Answer:

D) Distribute Property

Step-by-step explanation:

The student did Distribute property but they didn't mark it down.

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3 years ago
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Vinil7 [7]

Answer:

I believe its 17, this is a 90 degree angle, so 90-73=17

Step-by-step explanation:

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3 years ago
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