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umka21 [38]
2 years ago
7

Determine the diameter of the circle with the equation x 2+ y 2= 9.

Mathematics
1 answer:
kotegsom [21]2 years ago
6 0

Answer: d = 6

Step-by-step explanation:

x^2 + y^2 = r^2

So r = 3 and d will be 2 x r = 6

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A rocket carrying fireworks is launched from a hill 60 feet above a lake. The rocket will fall into the lake after exploding at
castortr0y [4]

Answer:

<h3>A) 204m</h3><h3>B) 188m</h3>

Step-by-step explanation:

Given the rocket's height above the surface of the lake given by the function h(t) = -16t^2 + 96t + 60

The velocity of the rocket at its maximum height is zero

v = dh/dt = -32t + 96t

At the maximum height, v  = 0

0 = -32t + 96t

32t = 96

t = 96/32

t = 3secs

Substitute t = 3 into the modeled function to get the maximum height

h(3) = -16(3)^2 + 96(3) + 60

h(3) = -16(9)+ 288 + 60

h(3) = -144+ 288 + 60

h(3) = 144 + 60

h(3) = 204

Hence the maximum height reached by the rocket is 204m

Get the height after 2 secs

h(t) = -16t^2 + 96t + 60

when t = 2

h(2) = -16(2)^2 + 96(2) + 60

h(2) = -64+ 192+ 60

h(2) = -4 + 192

h(2) = 188m

Hence the height of the rocket after 2 secs is 188m

3 0
3 years ago
Simplify 9x^0y^-3 write your answer using only positive exponents 
Sunny_sXe [5.5K]

Answer:

9x/y³

Step-by-step explanation:

6 0
2 years ago
What is 0.1 repeating. Convert to a FRACTION
velikii [3]

Answer:

0.1111... = 0.1 = 1/9

Step-by-step explanation:

0.1111.. Is a repeating decimal which can be written as 0.1 and 1/9

It is important to know that the decimals which have only 1 digit repeating all come from the fractions which are ninths.

6 0
3 years ago
Read 2 more answers
What's the answer was for <br> 1/2r+2(3/4r-1)=1/4r+6
Simora [160]
1/2r+2(3/4r-1)=1/4r+6
2r-2=1/4r+6
2r=1/4r+8
7/4r=8
7r=32
r=32/7
5 0
3 years ago
a bowling ball has a mass of 5.54 kg. A bowling pin has a mass of 1.58 kg. About how many pins are equal in mass to one ball
Masteriza [31]
Your answer would be a total of approximately 3.5 or 4 pins.

5.54kg÷1.58kg= <span>3.50632911392</span>
4 0
3 years ago
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