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SSSSS [86.1K]
2 years ago
14

Order these numbers from least to greatest. 2.2, 2.1021, 2.104, 2.12

Mathematics
2 answers:
bogdanovich [222]2 years ago
8 0
2.1021, 2.104, 2.12, 2.2
kifflom [539]2 years ago
3 0

Answer:

2.1021,2.104,2.12,2.2

Step-by-step explanation:

I think I got it right, sorry if it wrong!

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Doug hits a baseball straight towards a 15 ft high fence that is 400 ft from home plate. The ball is hit 2.5ft above the ground
Scorpion4ik [409]

Answer:

125.4\ \text{m/s}

Step-by-step explanation:

u = Initial velocity of baseball

\theta = Angle of hit = 30^{\circ}

x = Displacement in x direction = 400 ft

y = Displacement in y direction = 15 ft

y_0 = Height of hit = 2.5 ft

a_y = g = Acceleration due to gravity = 32.2\ \text{ft/s}^2

t = Time taken

Displacement in x direction

x=u_xt\\\Rightarrow x=u\cos\theta t\\\Rightarrow t=\dfrac{x}{u\cos\theta}\\\Rightarrow t=\dfrac{400}{u\cos30^{\circ}}\\\Rightarrow t=\dfrac{400}{u\dfrac{\sqrt{3}}{2}}\\\Rightarrow t=\dfrac{800}{u\sqrt{3}}

Displacement in y direction

y=y_0+u_yt+\dfrac{1}{2}a_yt^2\\\Rightarrow y=y_0+u\sin\theta t+\dfrac{1}{2}a_yt^2\\\Rightarrow 15=2.5+u\sin30^{\circ}(\dfrac{800}{u\sqrt{3}})+\dfrac{1}{2}\times -32.2\times (\dfrac{800}{u\sqrt{3}})^2\\\Rightarrow \dfrac{400}{\sqrt{3}}-\dfrac{10304000}{3u^2}-12.5=0\\\Rightarrow 218.44=\dfrac{10304000}{3u^2}\\\Rightarrow u=\sqrt{\dfrac{10304000}{3\times218.44}}\\\Rightarrow u=125.4\ \text{m/s}

The minimum initial velocity needed for the ball to clear the fence is 125.4\ \text{m/s}

5 0
3 years ago
a city has 12575 residents a number president grown by 1.6% every year to the nearest whole resident what will the city populati
iragen [17]

Answer:

12977.4 or just 12977

Step-by-step explanation:

4 0
2 years ago
Explain the importance of factoring.
ivolga24 [154]

Answer:

Factoring is a useful skill in real life. Common applications include: dividing something into equal pieces, exchanging money, comparing prices, understanding time, and making calculations during travel.

Sorry if this is a little wordy, I can get carried away with this sort of thing

anyway, hope this helped and answered your question :)

5 0
3 years ago
Help meh_________________<br><br><br><br>​
professor190 [17]

Answer:

binomial

Step-by-step explanation:

8 0
2 years ago
A) If a + 5 = 15, then find the value of a​
ozzi

Answer:

The answer is 10

Step-by-step explanation:

a + 5 =15

15-5=10

6 0
3 years ago
Read 2 more answers
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