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murzikaleks [220]
3 years ago
11

2. What is 18% of 29?

Mathematics
1 answer:
mylen [45]3 years ago
3 0

Answer:

5.22

Step-by-step explanation:

18% = 18/100 or 0.18

18/100 * 29 = 522/100 or 5.22

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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
2 years ago
What is the answer to -2 2/5+3 1/4-3/5
galina1969 [7]

Answer:

1/4 or 0.25

Step-by-step explanation:

8 0
2 years ago
Find the area of the shape shown below based on the picture i took
DanielleElmas [232]

you didnt link the picture

6 0
3 years ago
Which circles have an area of 36pift2?
san4es73 [151]
Area=pi times radius^2
area=36pi
36pi=pi times radius^2
divide both sides by pi
36=radius^2
square root both sides
6=radius

2radius=diameter
2 times 6=12
radius=6
diamater=12

the answers area A and D
(if you know your radius and diameter, you would know that diameter is 2 times radius and you could eliminate 2 choices imedietly (B and C))
7 0
3 years ago
In an ellipse, the variable b^2 is always matched with the variable whose axis parallels the __________ direction.
steposvetlana [31]

The equation of ellipse are \frac{x^{2}}{b^{2}}+\frac{y^{2}}{a^{2}}=1 for b\geq a and \frac{x^{2}}{a^{2}}+\frac{y^{2}}{b^{2}}=1 for b\geq a

One thing is changed between the two equations that is the placement of a^{2} and b^{2}. The a^{2} always goes with the variable whose axis parallel the wider direction of the ellipse and b^{2} always goes with the variable whose axis parallel the narrower direction.

3 0
2 years ago
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