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irina [24]
3 years ago
8

X=-1/8y^2 the proabola opens:

Mathematics
1 answer:
Brilliant_brown [7]3 years ago
4 0

I remember CUP -- concave up positive.  Here we have a leading coefficient that's negative, so the cup is upside down, the parabola opens down, an arch not a bowl.


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A rectangular rug has a perimeter of 20 feet. The length of the rug is 6 feet. What is the width of the rug in inches?
Alinara [238K]

Answer:

48 in

Step-by-step explanation:

The length of the rug is 6 feet. We know this must account for 2 sides of the rug, so let's multiply 6 by 2.

6 × 2 = 12

Now subtract 12 from 20.

20 - 12 = 8

Now divide 8 by 2 to find the measurement of the remaining two sides.

8 ÷ 2 = 4.

The width of the rug is 4 feet. The question wants to find the width in inches, however. So multiply 4 by 12 because there are 12 inches in each foot.

4 × 12 = 48

The width of the rug is 48 inches.

7 0
3 years ago
Factor.<br> 9y2 - 12y - 12 Please put it as (x+b) (x+b) form
Step2247 [10]

Answer:

3(3y+2)(y-2)

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4 0
3 years ago
Read 2 more answers
the endpoints of the diameter of a circle are (−6, 6) and (6, −2), what is the standard form equation of the circle?
miss Akunina [59]
The equation of a circle in standard form is

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

where (h, k) is the center of the circle, and r is the radius if the circle.

We need to find the radius and center of the circle.
We are given a diameter, so to find the center, we need the midpoint of the diameter.

M = ((-6 + 6)/2, (6 + (-2))/2) = (0, 2)
The center is (0, 2).

To find the radius, we find the length of the given diameter and divided by 2.

d = \sqrt{(-6 - 6)^2 + (6 - (-2))^2)}

d = \sqrt{144 + 64}

d = \sqrt{208}

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(x - 0)^2 + (y - 2)^2 = (\sqrt{52})^2

x^2 + (y - 2)^2 = 52
7 0
3 years ago
An iphone costs $1000 and is on sale for 20% off
vfiekz [6]

Answer:

200

Step-by-step explanation:

20 X 1000= 20000 divided by 100

6 0
3 years ago
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elena-s [515]

Answer:

2 =  \frac{m}{2}  - 7 \\  \frac{m}{2}  = 9 \\ m = 2 \times 9 \\  \boxed{m = 18}

<h3><u>m=18</u> is the right answer.</h3>
7 0
2 years ago
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