1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Morgarella [4.7K]
3 years ago
12

Please help if you would like brianleist!!!

Mathematics
1 answer:
BartSMP [9]3 years ago
8 0
The answer is 70 the third option.
You might be interested in
It has been estimated that only about 30% of California residents have adequate earthquake supplies. Suppose you randomly survey
mote1985 [20]

Answer:

P(X\geq 8)=0.0043\\\\

It's more likely that  all of the residents surveyed will have adequate earthquake supplies since it has a probability of 98.02% which is very close to 100%.

Step-by-step explanation:

-This is a binomial probability problem with the function:

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

-Given p=0.3, n=11, the is calculated as:

P(X=x)={n\choose x}p^x(1-p)^{n-x}\\\\P(X\geq 8)=P(X=8)+P(X=9)+P(X=10)+P(X=11)\\\\={11\choose 8}0.3^8(0.7)^3+{11\choose 9}0.3^9(0.7)^2+{11\choose 10}0.3^{10}(0.7)^1+{11\choose 11}0.3^{11}(0.7)^0\\\\=0.0037+0.0005+0.00005+0.000002\\\\=0.0043

Hence, the probability that at least 8 have adequate supplies 0.0043

#The probability that non has adequate supplies is calculated as;

P(X=x)={n\choose x}p^x(1-p)^{n-x}\\\\P(X= 0)={11\choose 0}0.3^{0}(0.7)^{11}\\\\=0.0198

#The probability that all have adequate supplies is calculated as:

P(X=x)={n\choose x}p^x(1-p)^{n-x}\\\\P(X= All)=1-{11\choose 0}0.3^{0}(0.7)^{11}\\\\=1-0.0198\\\\=0.9802

Hence, it's more likely that  all of the residents surveyed will have adequate earthquake supplies since P(All)>P(None)\ \ and that this probability is 0.9802 or 98.02% a figure close to 1

7 0
3 years ago
Pls help quick i need it soon
Afina-wow [57]

Answer:

Area = 32m^2q

Step-by-step explanation:

Area = bh

Area = 8mq · 4m

Area = 32m^2q

5 0
3 years ago
Use scientific notation to estimate the number of inches in 1,225 miles. Include all calculations in your final answer. 1 inch ≈
masya89 [10]
1225*(1.578*10^-5)=1.933*10^-2

1.578*10^-5= 0.00001578

1225*0.00001578=0.0193305

0.0193305=1.933*10^-2

5 0
3 years ago
Write a cosine function that has a midline of 2, an amplitude of 4 and a period of pi/2.
exis [7]

y = Acos(Bx) + D;

D = 4, A = 2. Now T = 2π/B = 5π/8, B = 2π/(5π/8) = 16/5

WE get y = 2cos(16/5x) + 4

4 0
2 years ago
Find all solutions of the equation. 5 sin x − 82√ = 3 sin x − 72√
Andrei [34K]

Answer:

  • x = arcsin(√20.5 -3√2) +2kπ . . . k any integer
  • x = π - arcsin(√20.5 -3√2) +2kπ . . . k any integer

Step-by-step explanation:

Add √(82) -3sin(x) to both sides to get ...

  2sin(x) = √82 -√72

Now, divide by 2 and find the arcsine:

  sin(x) = (√82 -√72)/2

  x = arcsin((√82 -√72)/2)

Of course, the supplement of this angle is also a solution, along with all the aliases of these angles.

___

In degrees, the solutions are approximately 16.562° and 163.438° and integer multiples of 360° added to these.

6 0
4 years ago
Other questions:
  • If you take Coleman's test grade and divide by 2 and add 27, you get 67. Write and solve an equation to find Coleman's test grad
    11·1 answer
  • Find the measure of ∠P
    9·2 answers
  • More points!! Please solve 22 and 23
    15·1 answer
  • My kid is really having difficulty with this question And im busy at the moment so a little help please. You try: Ralph has $20.
    12·2 answers
  • Find the GCF of 74 and 24. <br> A 2 <br> B 4 <br> C 8 <br> D 3
    13·2 answers
  • a parking space is 20 feet long a pick up truck is 6 yards how many inches longer is the parking space then the truck​
    14·1 answer
  • What is the equation of the line that passes through (-1, 5) and (3, -7)?
    6·1 answer
  • Factor 6x4 - 5x2 + 12x2 – 10 by grouping. What is the resulting expression? O (6x + 5)(x2 - 2) O (6x - 5)(x2 + 2) (6x2 + 5)(x -
    14·2 answers
  • How much does one cup of coffe cost? 8 cup of coffe for $28
    10·2 answers
  • How many solutions does the system have?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!