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asambeis [7]
3 years ago
8

What are the center and radius of the circle given by the equation ?

Mathematics
1 answer:
valina [46]3 years ago
3 0

General formula of the circle

(x-a)² + (y - b)² = r²,


where (a,b) - coordinates of the center, r - radius of the circle.


(x-3)²+(y+4)²=4

(x-3)²+(y+4)²=2²


So, the center is (3, -4) and radius r = 2.


A. (3, –4); 2


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a vector has a magnitude of 50 in the 35º direction. what are the horizontal and vertical components of this vector?
Semenov [28]

Answer:

Horizontal component: 40.95

Vertical component: 28.67

Step-by-step explanation:

To find the horizontal and the vertical component of this vector, you need:

The formula for calculate the horizontal component:

a_x=|a|cos\alpha

Where |a| is the magnitude

The formula for calculate the vertical component:

a_y=|a|sin\alpha

Where |a| is the magnitude

Given the angle 35 degrees and the magnitude,you can substitute values into the formulas.

Therefore, you get  that the horizontal component and the vertical component of this vector are:

a_x=50cos(35\°)=40.95

a_y=50sin(35\°)=28.67

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3 years ago
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The scores of a psychology exam were normally distributed with a mean of 70 and a standard deviation of 5 a failing grade on the
viktelen [127]

Answer:

The Answer is likely 60.

Step-by-step explanation:

Two standard deviations from 70 is 60, because the actual deviation is 5, so 2 of those equals 10. 10 - 70 = 60.

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3 years ago
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Please help with this! Will give brainliest if the answer is right!
musickatia [10]

Answer:

784

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What is the sum of 3(x + 3) and -2(x - 5)?<br> A. X-2<br> B. x-1<br> C. X + 8<br> D. X + 19
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The answer is actually d lol the idiot above me was right
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One pipe can fill a tank in 6 hours while another can empty it in 2 hours. how long will it take to empty the full tank if both
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The drain pipe can drain (1/2) of the tank in 1 hour.
The fill pipe can fill (1/6) of the tank in 1 hour.
Working together, the pipes will drain the tank in (1/2) - (1/6) hours.

(1/2) - (1/6) = (3/6) -(1/6) = (2/6) or (1/3) of an hour.
So, working together, it will take 3 hours.


4 0
4 years ago
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