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
lesantik [10]
2 years ago
14

What is the product of (s+3t)(2s-2t)

Mathematics
1 answer:
tatuchka [14]2 years ago
3 0
(s + 3t) * (2s - 2t) = 2s^2 - 2st + 6ts - 6t^2
You might be interested in
Which number for (a) would result in (x-1) being a factor of p(x)=3x^3+x^2+ax-1
oee [108]

Answer:

A)3

Step-by-step explanation:

8 0
3 years ago
The Los Angeles Times regularly reports the air quality index for various areas of Southern California. A sample of air quality
egoroff_w [7]

Answer:

1. (a) 32     (b) 8

2. (a) 48.33    (b) 92.75    (c) 9.63

3.  We observe that sample mean of air quality index in Pomona is higher that that of Anaheim which indicates that the level of air pollution is higher in Pomona and there is more health concern here.

On the other hand, the variation in air quality index is higher in Anaheim than in Pomona as Anaheim has higher variance and standard deviation for air quality index which means that there are not much fluctuations in air quality index in Pomona.  

Step-by-step explanation:

First arranging our data of air quality index values for Pomona in ascending order, we get : 28, 42, 45, 48, 49, 50, 55, 58, 60.

  1. (a) Range is given by the formula :

                      Highest value in data - Lowest value in data = 60 - 28 = 32

        (b) Interquartile rage = Third quartile - First quartile

                                           = Q_3 - Q_1

             Q_1 =  (\frac{n-1}{4} )^{th} observation in the data = 2^{nd} obs. { Because n = 9}

                 Therefore, Q_1 = 42.

             Q_3 = (3Q_1)^{th} obs. = (3 x 2 ) = 6^{th} obs = 50

             So, Interquartile rage = 50 - 42 = 8.

     2. (a) Sample mean formula =  \frac{\sum X_i}{n} = \frac{28+ 42+ 45+ 48+ 49+ 50+ 55+ 58+ 60}{9} = 48.33

         (b) Sample variance formula = \frac{\sum (X_i - Xbar)^{2}}{n-1} where Xbar = Sample mean

                                                         = 92.75

          (c) Sample standard deviation  formula = \sqrt{variance} = \sqrt{92.75} = 9.63.

     3. Given that a sample of air quality index readings for Anaheim has   sample mean of 48.3, a sample variance of 136, and a sample standard deviation of 11.66.

We observe that sample mean of air quality index in Pomona is higher that that of Anaheim which indicates that the level of air pollution is higher in Pomona and there is more health concern here.

On the other hand, the variation in air quality index is higher in Anaheim than in Pomona as Anaheim has higher variance and standard deviation for air quality index which means that there are not much fluctuations in air quality index in Pomona.  

                                       

7 0
2 years ago
H+p=4(k−7) for k please answer
dmitriy555 [2]

Answer:

(28 + h + p)/4 = k

Step-by-step explanation:

Step 1: Write equation

h + p = 4(k - 7)

Step 2: Solve for <em>k</em>

<u>Distribute 4:</u> h + p = 4k - 28

<u>Add 28 to both sides:</u> 28 + h + p = 4k

<u>Divide both sides by 4:</u> (28 + h + p)/4 = k

3 0
3 years ago
A . What is the slope in the line of the graph ?
vampirchik [111]

Answer:

0.2x+3

Step-by-step explanation:

5 0
3 years ago
7 is greater than or equal to w, and - 1 is less than w
kari74 [83]
This written as an expression is 7 >= w > -1

Hope this helps!
8 0
2 years ago
Other questions:
  • Equilateral triangle ABC has a perimeter of 96 milimeters. A perpendicular bisector is drawn from angle A to side seg.BC at poin
    10·2 answers
  • Determine the effect on the balance sheet after the following transaction. You sell a product purchased for $500 for $1500. This
    6·2 answers
  • Simplify 24 - 15 - 3+ 2.6.<br> O A. 30<br> O B. 31<br> O C. 126<br> O D. 15
    10·1 answer
  • 8. An item is on sale for 50% off the regular price of $3.18. A customer buys one and gives the cashier $5.00. The cashier gives
    6·1 answer
  • Order of operations 8 (4)(8)-14
    14·2 answers
  • Which skier the most potential energy?
    15·2 answers
  • Which is the graph of x≥−5?
    8·2 answers
  • The LCD for<br> 17 and 1/2<br> is<br> 07<br> 08<br> 15<br> 56
    14·1 answer
  • Help me Pleaseeeeeee!!!!!!!!!!!!
    8·1 answer
  • What is the frequency?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!