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timurjin [86]
3 years ago
14

If anyone can answer I will give brainleiest ​

Mathematics
2 answers:
swat323 years ago
3 0

Answer:

2555555

Step-by-step explanation:

Sophie [7]3 years ago
3 0

Answer:

2555555

Step-by-step explanation:

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Suppose you take a 15 question True or False quiz and you guess on every problem. You only get 3 correct. (a) What is the probab
lana66690 [7]

Answer:

0.648

No, that is not an unusually low number of correct guesses.

Step-by-step explanation:

Suppose you take a 15 question True or False quiz and you guess on every problem. You only get 3 correct. Then

  • p=\dfrac{3}{15}=\dfrac{1}{5}=0.2 - correct;
  • q=1-p=1-0.2=0.8 - o\incorrect.

The probability of getting 3 or fewer correct guesses is

P(\text{3 or fewer})\\=P(0)+P(1)+P(2)+P(3)\\ \\=C^{15}_0p^0q^{15-0}+C^{15}_1p^1q^{15-1}+C^{15}_2p^2q^{15-2}+C^{15}_3p^0q^{15-3}\\ \\=1\cdot q^{15}+15pq^{14}+105p^2q^{13}+455p^3q^{12}\\ \\=(0.8)^{15}+15\cdot 0.2\cdot (0.8)^{14}+105\cdot (0.2)^2\cdot (0.8)^{13}+455\cdot (0.2)^3\cdot (0.8)^{13}\\ \\\approx 0.648

Using the criteria that a number 3 is unusually low if P(3 or fewer) ≤ 0.05, we can state that 3 is not an unusually low number of correct guesses.

5 0
3 years ago
Cell growth can be modeled using the function y = a(b) where x
astra-53 [7]

Answer:

please answer mine

Step-by-step explanation:

7 0
3 years ago
Tanya is 42 years old. she would like to open aretirement account so she will have half a million dollars in the account when sh
gladu [14]
Let the total amount that Sarah deposited be $x
using the annuity formula:
A=P[((1+r)^n-1)/r]
A=future value
r=rate
n=number of years
from the information given:
A=$500000
r=2.75%
n=65-42=23 years
p=$x
thus plugging our values in the formula we get:
500000=x[((1+0.0275)^(23)-1)/(0.0275)]
500000=31.50x
x=15,872.04883
She deposited 15,873.04883 per year
The monthly deposit will therefore be:
15873.04883/12=$1322.67
7 0
3 years ago
Two trucks leave a warehouse at the same time. one travels due west at an average speed of 49 miles per hour, and the other trav
Gre4nikov [31]

Well there can be two different solutions for this but i will choose the easier one. Obviously one requires a system of equations which obviously will involve a lot of thinking and some good algebra solving in order for them to solve.

So we can just keep adding the distance as we know they are in different directions. 49 + 65 = 114. So 114 * 4.5 = 513 miles. SO after around 4.5 hours they will be 513 miles apart.

4 0
2 years ago
PLEASE HELP I WILL GIVE BRAINLIEST TO QUICKEST RESPONSE
musickatia [10]

Answer:

2.3

Step-by-step explanation:

5 0
2 years ago
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