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3 years ago

HIII can someone please help me with this question??

Mathematics

1 answer:

nika2105 [10]3 years ago

6 0

Answer:

66.6 or about 67 is the average rate of change

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Solve the equation.<br> 2^-x = 1<br><br> PLEASE HELP!!!

Zarrin [17]

1 is the correct answer.

3 0

4 years ago

According to a study conducted by an organization, the proportion of Americans who were afraid to fly in 2006 was 0.10. A rando

jeyben [28]

Answer:

Event is not unusual(p>0.05).

Step-by-step explanation:

Given that :

$p=0.10\\\\n=1100\\\\x=121$

#The sample proportion is calculated as:

$\hat p=\frac{x}{n}\\\\=\frac{121}{1100}\\\\=0.1100$

#Mathematically, the z-value is the value decreased by the mean then divided the standard deviation :

$z=\frac{\hat p- p}{\sqrt{\frac{p(1-p)}{n}}}\\\\\\\\=\frac{0.11-0.10}{\sqrt{\frac{0.10(1-0.10)}{1100}}}\\\\\\=1.1055$

#We use the normal probability table to determine the corresponding probability;

$P(X\geq 121)=P(Z>1.1055)\\\\=0.1314$

Hence, the probaility is more than 0.05, thus the event not unusual and thus this is not necessarily evidence that the proportion of Americans who are afraid to fly has increased.

8 0

3 years ago

When Legs jumps 2 times and takes 13 steps forward, he lands in the same place as when he jumps 4 times and takes 5 steps backwa

tangare [24]

Answer:

9 steps

Step-by-step explanation:

Let $x$ be the number of jumps

and $y$ be the number of steps

So the first case

$2x+13y$

Second case

$4x-5y$

Both cover equal distances so

$2x+13y=4x-5y$

$\Rightarrow 2x-4x=-5y-13y$

$\Rightarrow 2x=18y$

$\Rightarrow x=9y$

So, one jumps is 9 steps.

4 0

3 years ago

Please help with MATH I have the answer which is ''C'' just need an explanation on how I got the answer.

kondor19780726 [428]

Answer:

C . 2,550 bolts. lol

Step-by-step explanation:

A simple technique to answer a question like this is to

Step 1: multiply 30 by 17000 = 510000

Step 2: divide 510000 by 200 = 2550

4 0

4 years ago

What is 7 and one fifth divided by 8? Plz help

USPshnik [31]

$7 \frac{1}{5} \div 8$ = 4/5

8 0

3 years ago