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Kryger [21]
3 years ago
10

Emily flipped a coin 30 times the coin landed heads up nine times and tails up 21 times

Mathematics
1 answer:
lara [203]3 years ago
8 0
Part A)
 The coin landed on heads 9 times out of 30 flips, so the experimental probability is 9/30, which reduces to 3/10 probability.

Part B)
 Theoretically a coin has a 1/2 probability of landing on heads each flip


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Which line is a graph of the equation: 2x + 5y = -10?
Lady bird [3.3K]

Answer:

D

Step-by-step explanation:

2x + 5y = - 10         Subtract 2x from both sides

5y = -2x - 10           Divide by 5

y = -2x/5 - 10/5      

y = 0.4x - 2

The slope is minus so the line is going from lower right to upper left as B and D are doing.

The y intercept is - 2. B goes through + 2 so it is not the answer.

The answer is D

3 0
2 years ago
3x^2-192=0<br><img src="https://tex.z-dn.net/?f=3%20%7Bx%7D%5E%7B2%7D%20%20-%20192%20%3D%200" id="TexFormula1" title="3 {x}^{2}
Murljashka [212]
3x^2-192=0
3x^2=192
x^2=\frac{192}{3}
x=\pm \sqrt{64}
x=\pm 8

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5 0
3 years ago
Read 2 more answers
An above ground pool with 17,100 gallons of water was draining. If the pool drained at a rate of 1,800 gallons per hour, how man
zhuklara [117]

Answer:

6 Hours

Step-by-step explanation:

17,100 - 6,300= 10,800

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8 0
2 years ago
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Nataly_w [17]

Answer:

- time = 1second

- maximum height = 16m

Step-by-step explanation:

Given the height of a pumpkin t seconds after it is launched from a catapult modelled by the equation

f(t)=-16t²+32t... (1)

The pumpkin reaches its maximum height when the velocity is zero.

Velocity = {d(f(x)}/dt = -32t+32

Since v = 0m/s (at maximum height)

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t = -32/-32

t = 1sec

The pumpkin reaches its maximum height after 1second.

Maximum height of the pumpkin is gotten by substituting t = 1sec into equation (1)

f(1) = -16(1)²+32(1)

f(1) = -16+32

f(1) = 16m

The maximum height of the pumpkin is 16m

6 0
3 years ago
3500ca = 1fp
MAXImum [283]

Answer: 1fp = 525 minutes

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<u>Step-by-step explanation:</u>

Solve this using conversions

\dfrac{30\ minutes}{200\ ca } \times \dfrac{3500\ ca}{1\ fp}= 525\ minutes\ per\ fp

For 35 fp, multiply 35 fp by 525 minutes per 1 fp = 18,375

5 0
3 years ago
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