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Anon25 [30]
2 years ago
11

Find the area of the circle. Use 3.14 for it. O d = 10 cm A = [?] cm2 A=Tr2

Mathematics
1 answer:
vazorg [7]2 years ago
3 0

Answer:

i wish i could help. im so bad at math

Step-by-step explanation: good  luck

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List 3 reasons you listen to music and tell how each influences your mood.
ANTONII [103]

Answer: It provides a total brain workout.” Research has shown that listening to music can reduce anxiety, blood pressure, and pain as well as improve sleep quality, mood, mental alertness, and memory.

6 0
3 years ago
NASA launches a rocket at t = 0 seconds. Its height, in meters above sea-level, as a function of time is given by h ( t ) = − 4.
Aleks [24]

Answer:

A.) 24.08 seconds

B.) 825.42 metres

Step-by-step explanation:

function of time is given as

h ( t ) = − 4.9 t 2 + 118 t + 115 .

Where a = -4.9, b = 118, c = 115

Let's assume that the trajectory of the rocket is a perfect parabola.

The time t the rocket will reach its maximum height will be at the symmetry of the parabola.

t = -b/2a

Substitute b and a into the formula

t = -118/-2(4.9)

t = 118/9.8

t = 12.041 seconds

Since NASA launches the rocket at t = 0 seconds, the time it will splash down into the ocean will be 2t.

2t = 2 × 12.041 = 24.08 seconds

Therefore, the rocket splashes down after 24.08 seconds.

B.) At maximum height, time t = 12.041s

Substitute t for 12.041 in the function

h ( t ) = − 4.9 t 2 + 118 t + 115

h(t) = -4.9(12.041)^2 + 118(12.041) + 115

h(t) = -4.9(144.98) + 118(12.041) + 115

h(t) = -710.402 + 1420.82 + 115

h(t) = 825.42 metres

Therefore, the rocket get to the peak at 825.42 metres

6 0
3 years ago
Which plant grows faster: A plant that can grow 8 centimeters in 6 days or a plant that can grow 12 centimeters in 9 days?
tamaranim1 [39]

Answer: Both plants grow at same rate ie., 4/3 cm per day

Step-by-step explanation:

8 cm = 6 days

1 day = 1/6 x 8 = 4/3 cm

12 cm = 9 days

1 day = 1/9 x 12 = 4/3 cm

6 0
3 years ago
PLEASE HELP WILL MARK BRAINLIEST AND GIVE 5.0 STAR RATING
stiv31 [10]

Answer:

I believe the answer should be 4.1 units.

4 0
2 years ago
Read 2 more answers
Sam scored 43 48 and 42 points on 3 test how many points should he get on the fourth test to get in average score of 50
antoniya [11.8K]
43+48+42=133

(133+x)/4=50
133+x=200
x=67
5 0
3 years ago
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