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
siniylev [52]
2 years ago
14

For khan academy . Need answer immediately

Mathematics
2 answers:
Anon25 [30]2 years ago
5 0

Answer:

y = -2x+2

Step-by-step explanation:

Andreyy892 years ago
3 0

Answer:

y = -2x+2

Step-by-step explanation:

You might be interested in
The length of the minute hand is 150% of the length of the hour hand.
tangare [24]
The hour hand is 30 mm hope this is right
7 0
3 years ago
The summer monsoon brings 80% of India's rainfall and is essential for the country's agriculture.
Natasha_Volkova [10]

Answer:

Step 1. Between 688 and 1016mm. Step 2. Less than 688mm.

Step-by-step explanation:

The <em>68-95-99.7 rule </em>roughly states that in a <em>normal distribution</em> 68%, 95% and 99.7% of the values lie within one, two and three standard deviation(s) around the mean. The z-scores <em>represent values from the mean</em> in a <em>standard normal distribution</em>, and they are transformed values from which we can obtain any probability for any normal distribution. This transformation is as follows:

\\ z = \frac{x - \mu}{\sigma} (1)

\\ \mu\;is\;the\;population\;mean

\\ \sigma\;is\;the\;population\;standard\;deviation

And <em>x</em> is any value which can be transformed to a z-value.

Then, z = 1 and z = -1 represent values for <em>one standard deviation</em> above and below the mean, respectively; values of z = 2 and z =-2, represent values for two standard deviations above and below the mean, respectively and so on.

Because of the 68-95-99.7 rule, we know that approximately 95% of the values for a normal distribution lie between z = -2 and z = 2, that is, two standard deviations below and above the mean as remarked before.

<h3>Step 1: Between what values do the monsoon rains fall in 95% of all years?</h3>

Having all this information above and using equation (1):

\\ z = \frac{x - \mu}{\sigma}  

For z = -2:

\\ -2 = \frac{x - 852}{82}

\\ -2*82 + 852 = x

\\ x_{below} = 688mm

For z = 2:

\\ 2 = \frac{x - 852}{82}

\\ 2*82 = x - 852

\\ 2*82 + 852 = x

\\ x_{above} = 1016mm

Thus, the values for the monsoon rains fall between 688mm and 1016mm for approximately 95% of all years.

<h3>Step 2: How small are the monsoon rains in the driest 2.5% of all years?</h3>

The <em>driest of all years</em> means those with small monsoon rains compare to those with high values for precipitations. The smallest values are below the mean and at the left part of the normal distribution.

As you can see, in the previous question we found that about 95% of the values are between 688mm and 1016mm. The rest of the values represent 5% of the total area of the normal distribution. But, since the normal distribution is <em>symmetrical</em>, one half of the 5% (2.5%) of the remaining values are below the mean, and the other half of the 5% (2.5%) of the remaining values are above the mean. Those represent the smallest 2.5% and the greatest 2.5% values for the normally distributed data corresponding to the monsoon rains.

As a consequence, the value <em>x </em>for the smallest 2.5% of the data is precisely the same at z = -2 (a distance of two standard deviations from the mean), since the symmetry of the normal distribution permits that from the remaining 5%, half of them lie below the mean and the other half above the mean (as we explained in the previous paragraph). We already know that this value is <em>x</em> = 688mm and the smallest monsoons rains of all year are <em>less than this value of x = </em><em>688mm</em>, representing the smallest 2.5% of values of the normally distributed data.

The graph below shows these values. The shaded area are 95% of the values, and below 688mm lie the 2.5% of the smallest values.

3 0
3 years ago
Evaluate the expression (6 + 9 ÷ 3) × 7.
Katarina [22]

Answer:

63

Step-by-step explanation:

(6+9÷3)×7

division is always first

(6+3)×7

then parenthesis

9×7

multiply

63

3 0
2 years ago
Read 2 more answers
can someone help me figure this out?? My sisters at work rn she usually helps me with algerbra pleasee help!​
ANEK [815]

Answer:

its the last one hun

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
1. Which of the following is equal to
andreyandreev [35.5K]

Answer:

D

Step-by-step explanation:

These I's are being used as sticks

lets say i have 40 sticks then i add 55 more sticks to them

IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII + IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII If i were to reverse the sequence and use the 55 sticks and add 44 sticks to them it would be the same as me having 44 sticks and adding 55 more.

5 0
3 years ago
Other questions:
  • What does how can the term unit square help you to remember that area is measured in square units
    9·1 answer
  • You calculate the number of spots on a pair of two dice that you roll, sides facing up (the total can be called "x"). this is al
    15·1 answer
  • What is the surface area of the cube​
    14·2 answers
  • Can someone please help me?????!!!!
    12·1 answer
  • WILL GIVE BRAINLIEST ANSWER
    7·2 answers
  • Parallel lines
    13·1 answer
  • Rewrite the expression in distributive property 8(2m+1)
    6·2 answers
  • The slope of the line that contains the points (4, 10) and (5, 13) is 3. Find the y-intercept.
    8·1 answer
  • For the equation - 3x + 2 = 8 and the inequality
    11·1 answer
  • Can y’all please solve this
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!