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
nikklg [1K]
3 years ago
14

Help plz help help help

Mathematics
1 answer:
PtichkaEL [24]3 years ago
3 0

Answer:

its so blurry

Step-by-step explanation:

grrrr

You might be interested in
What is 50 divide by 25 times 2 divided by 5 ?
klemol [59]
0.8 i think I’m not sure .
3 0
3 years ago
Read 2 more answers
Adam has three pennies, two dimes, and one nickel. he also has one other coin that is different from the rest of his coins. how
Hatshy [7]

Answer:

Step 1. Read the problem. Make sure you understand all the words and ideas.

Step 2. Identify what you are looking for.

Step 3. Name what you are looking for.

Step 4. Translate into an equation. Restate the problem in one sentence. Then translate into an equation.

Step 5. Solve the equation using good algebra techniques.

Step 6. Check.

Step 7. Answer the question.

Step-by-step explanation:

6 0
3 years ago
Police use a radar unit is used to measure speeds of cars on a freeway. The speeds are normally distributed with a mean of 90 km
vagabundo [1.1K]

Answer:

A. P(x≥100)=0.1587

B. P(x≤0)≈0

Step-by-step explanation:

A. Cause we know the distribution of the data, the method used to solve it is called "Normalization" and we need to have the Mean and the Standard deviation of the data. The method consist in the following equation

P(x≤a)=P( z=((x-μ)/σ) ≤ b=((a-μ)/σ) )

Considering <u>μ as the Mean</u> and <u>σ as the Standard deviation</u>. At first, we had a probability in the normal distribution with Mean=90 and STD=10 but <u>that kind of exercises is not meant to find that probability directly but by using this process</u>.

After we normalize the probability, now <u>we have a probability in a specific normal distribution that has Mean=0 and STD=1 and the difference with what we had before is that now we are able to use tools to find probabilities in a normal standard distribution</u>. My favorite of them is a chart that show the approximate values of a lot of probabilities (i attached it to this answer). I´m going to explain point A as an example:

We look for the probability that P(x≥100), but we don´t have an easy method to use there, so we normalize:

P(x≥100)=P( (x-μ)/σ ≥ (100-μ)/σ )

P(x≥100)=P( z ≥ (100-90)/10 )

P(x≥100)=P( z ≥ 1 )

And now we are able to use the chart, let me explain: First, the chart only works with P(z ≤ b), so we have to change it with properties of probabilities before using the table.

P(z≥1)=1-P(z≤1)

And finally we use the chart:

<u>the value of P(z≤1) is in the table, we look for the row with +1 and the column with the decimal part (in this case 0) and with coordinates (1,0) there´s the value</u>:

P(z≤1)=0.8413

But we need P(z≥1) so we use the previous equality

P(z≥1)=1-P(z≤1)

P(z≥1)=1-0.8413

P(z≥1)=0.1587

Because P(x≥100)=P(z≥1), our final answer is 0.1587

B. We use the same process to try to understand what the probability of P(x≤0) represents.

P(x≤0)=P(z≤ (0-90)/10)

P(x≤0)=P( z ≤ -9 )

But when we try to look for its value in the chart It isn´t even there, what could it mean?

<u>A normal distribution function is always increasing</u>, that means that "a≤b if and only if P(x≤a) ≤ P(x≤b)". so we conclude:

P(z≤-9) ≤ P(z≤-3) (The lowest probability in the chart)

P(z≤-9) ≤ 0.0013

P(z≤-9) is way lower than 0.0013 (they aren´t even close) but we know that probability is always positive,  and because of that:

P(x≤0)=P(z≤-9)≈0

5 0
2 years ago
URGENTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT
mash [69]

Answer:

I don't think soo that it make a function

4 0
2 years ago
Read 2 more answers
Jaden earned $54 every nine days based on this information how many days will it take Jaden to earn $96​
inessss [21]

Answer:

it will take her 16 days

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • Chris wants to create a rectangular rose garden in a yard. He has 32 meters of garden fencing to go around the garden and he has
    13·1 answer
  • What is the equation of the circle with center (5, -4) and radius 4?
    8·1 answer
  • For which of these functions does the function value change at a constant rate per unit change in x? Explain.
    15·1 answer
  • The table shows numbers with the ratio x : y? Find the missing number?
    5·2 answers
  • How would i write 4.67 as a mixed number?
    10·1 answer
  • How do you simplify a math problem?
    5·2 answers
  • Find the sum of natural number from 1 to 30
    5·1 answer
  • Jason purchased a pack of game cards that was on sale for 13% off. The sales tax in his county is 8%. Let y represent the origin
    12·1 answer
  • 4
    9·1 answer
  • If a is an odd integer and b is an even integer, which of the following makes an odd integer?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!