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2 years ago

What are the center and the radius of a circle with the equation (x + 5)² + (y - 4)² = 81

Mathematics

1 answer:

Alexeev081 [22]2 years ago

6 0

Step-by-step explanation:

We know that if the equation of the circle is (x-h)^2 + (y-k)^2 = r^2, it has a center of (h,k) and a radius of r.

Matching this up with the given equation, we get the center is (-5, 4) and the radius is 9.

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Vika [28.1K]

Histogram
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3 years ago

A rocket is launched from the ground and travels in a straight path. The angle of inclination of the rocket's path is 1.2 radian

gladu [14]

Answer:

a) $S=2.57$

b) $H=203.2yard$

c) $X=121.79yards$

Step-by-step explanation:

From the question we are told that:

Angle $\theta=1.2=68.755^o$

Generally the equation for Slope is mathematically given by

$S=tan \theta$

$S=tan 68.755$

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Given the right Angle triangle with horizontal distance $x=85yard$

Generally the equation for Height traveled is mathematically given by

$H=tan\theta*x$

$H=2.57*85$

$H=218.45$

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$X=\frac{313}{2.57}$

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3 0

2 years ago

Brandon buys a radio for $46.07 in a state where sales Tax is 7%

Radda [10]

Answer:

29.50

Step-by-step explanation:

Multiply the cost of an item or service by the sales tax in order to find out the total cost. The equation looks like this: Item or service cost x sales tax (in decimal form) = total sales tax. Add the total sales tax to the Item or service cost to get your total cost.

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3 years ago

Find the indicated area under the curve of the standard normal distribution; then covert it to a percentage and fill in the blan

Artemon [7]

99.74\ % hope this is correct and help !

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2 years ago

Which expressions are equivalent to 3(-2a-4-)+3a

svetlana [45]

Answer:

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Step-by-step explanation:

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3 years ago