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valina [46]
3 years ago
12

Which section of the function is decreasing? (4 points)

Mathematics
2 answers:
vredina [299]3 years ago
8 0

Answer:

Step-by-step explanation:

D

I am Lyosha [343]3 years ago
7 0

Answer:

D

Step-by-step explanation:

D

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Find the equation of a circle with a center at (–7, –1) where a point on the circle is (–4, 3).
gogolik [260]

Answer:

(x + 7)^2 + (y + 1)^2 = 25.

Step-by-step explanation:

The center of a circle is easy to set up. According to the formula below, the formula for the circle will be (x - a)^2 + (y - b)^2 = r^2.

In this case, a = -7 and b = -1, so we have...

(x - (-7))^2 + (y - (-1))^2 = r^2

(x + 7)^2 + (y + 1)^2 = r^2

To get the radius, we need to find the distance between the center and the point on the circle. The distance formula is d = sqrt((x2 - x1)^2 + (y2 - y1)^2).

In this case, x2 = -4, x1 = -7, y2 = 3, and y1 = -1.

sqrt((-4 - -7)^2 + (3 - -1)^2) = sqrt((-4 + 7)^2 + (3 + 1)^2) = sqrt((3)^2 + (4)^2) = sqrt(9 + 16) = sqrt(25) = plus or minus 5.

Since distance can only be positive, the distance is 5 units, meaning that the radius is 5 units.

5^2 = 25

So, your equation should be (x + 7)^2 + (y + 1)^2 = 25.

Hope this helps!

8 0
3 years ago
What is the solution to<br><br>- 4x + 28 &gt; 12
raketka [301]

Answer:

\large\boxed{x

Step-by-step explanation:

-4x+28>12\qquad\text{subtract 28 from both sides}\\\\-4x>-16\qquad\text{change the signs}\\\\4x

6 0
3 years ago
I need help ASAP with this question pls help
Oxana [17]

Answer:

the diameter of a tube is 1 3/4. How much is radius

8 0
2 years ago
Read 2 more answers
If the lateral area of a right rectangular prism is 384 cm^2, its length twice its width, and its height is twice its length, fi
Katen [24]
Width = w
Length = 2w
Height = 4w
w \times 2w  = 384 \\  {2w}^{2}  = 384 \\  {w}^{2}  = 192 \\ w = 13.86cm
Width = 13.86cm

Hope this helps. - M
7 0
3 years ago
Write an equation that you can use to solve for x.<br><br> Enter your answer in the box.
patriot [66]
X + 60 = 100 (because they are vertical angles, which means that because they are directly opposite of each other, they are of the same measurements).

Solve for x. Isolate the x, subtract 60 from both sides

x + 60 = 100

x + 60 (-60) = 100 (-60)

x = 100 (-60)

x = 40

40° should be your answer

hope this helps
8 0
3 years ago
Read 2 more answers
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