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Lelu [443]
3 years ago
15

Square Roots

Mathematics
1 answer:
dlinn [17]3 years ago
4 0
4 is the square root of 16

i think that what you are asking, but if it is not tell me and i can try to help more :)
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Liz Williams claims to have psychic abilities and predict the future. Anderson Cooper, a CNN personality plans to test her in hi
Katena32 [7]

Answer:

b. Because the probability of being 15 or more correct is 0.0207, it is likely that she is just guessing at the questions.

Step-by-step explanation:

-This is a binomial probability distribution with p=0.5, n=20 and x=15.

The function is expressed as:

P(X=x)={n\choose x}p^x(1-p)^{n-x}

We calculate the probability of guessing 15 or more correctly:

P(X\geq 15)=1-P(X

The probability of passing, guessing 15+ correctly, is 0.0207. This probability is very low and it is  it is likely that she is just guessing at the questions

7 0
3 years ago
Subtract integers<br><br> 9 - (10)
BartSMP [9]

Step-by-step explanation:

9-(10) = 9-10 = -1

Hope this helps

4 0
2 years ago
a 10 gram sample of a substance that's used to detect explosives has k-value of 0.1353, find the substance half life in days, Ro
IrinaK [193]
We find the value of N₀ since we are provided with initial conditions.
The condition is that, at time t = 0, the amount of substance contains originally 10 grams.
We substitute:
10 = N₀ (e^(-0.1356)*0)
10 = N₀ (e^0)
N₀ = 10

When the substance is in half-life (meaning, the half of the original amount), it contains 5 grams. We solve t in this case.
5 = 10 e^(-0.1356*t)
0.5 = e^(-0.1356*t)
Multiply natural logarithms on both sides to bring down t.
ln(0.5) = -0.1356*t
Hence,
t = -(ln(0.5))/0.1356
t ≈ 5.11 days (ANSWER)
4 0
3 years ago
Read 2 more answers
What is the slope of the line that passes through the points (7, -7) and (8, -13)?
77julia77 [94]

Answer:

Slope = -6

Step-by-step explanation:

Use the slope formula to find the slope (m).

Hope this helped!

brainliest please!

4 0
2 years ago
A bag contains 8 red marbles, 4 white marbles, and 5 blue marbles. You draw one marble at random. Find Pared and blue) (1 point)
stiks02 [169]

Answer:

5/(8+4+5) = 5/17

Step-by-step explanation:

total has (8 red +4 white+5 blue)= 17

we looking for blue , so is 5.

5/17

4 0
1 year ago
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