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
Alekssandra [29.7K]
2 years ago
15

Assertion - if the mean of five observations X, X+2, X+4, X+6, X+8 is 11 then,Mean of last 3 observations is 8. Reason - Range=

Max. Value - Min. Value. (a) Both A and R are true, and R is the correct explanation for A. b) Both A and R are true, and R is not the correct explanation for A. c) A is true but R is false. d) A is false but R is true. ​
Mathematics
1 answer:
FinnZ [79.3K]2 years ago
6 0
A is false but R is true (the mean of the last 3 values is not 8 since x=7)
You might be interested in
I need help 6x-2y=10 x-2y=-5 solve by elimination
dem82 [27]
<h3><u>Explanation</u></h3>
  • Given the system of equations.

\begin{cases} 6x - 2y = 10 \\ x - 2y =  - 5 \end{cases}

  • Solve the system of equations by eliminating either x-term or y-term. We will eliminate the y-term as it is faster to solve the equation.

To eliminate the y-term, we have to multiply the negative in either the first or second equation so we can get rid of the y-term. I will multiply negative in the second equation.

\begin{cases} 6x - 2y = 10 \\  - x  +  2y =  5 \end{cases}

There as we can get rid of the y-term by adding both equations.

(6x - x) + ( - 2y + 2y) = 10 + 5 \\ 5x + 0 = 15 \\ 5x = 15 \\ x =  \frac{15}{5}  \longrightarrow  \frac{ \cancel{15}}{ \cancel{5}}  =  \frac{3}{1}  \\ x = 3

Hence, the value of x is 3. But we are not finished yet because we need to find the value of y as well. Therefore, we substitute the value of x in any given equations. I will substitute the value of x in the second equation.

x - 2y =  - 5 \\ 3 - 2y =  - 5 \\ 3 + 5 = 2y \\ 8 = 2y \\  \frac{8}{2}  = y \\ y =  \frac{8}{2} \longrightarrow  \frac{ \cancel{8}}{ \cancel{2}}  =  \frac{4}{1}  \\ y = 4

Hence, the value of y is 4. Therefore, we can say that when x = 3, y = 4.

  • Answer Check by substituting both x and y values in both equations.

<u>First</u><u> </u><u>Equation</u>

6x - 2y = 10 \\ 6(3) - 2(4) = 10 \\ 18 - 8 = 10 \\ 10  = 10 \longrightarrow \sf{true} \:  \green{ \checkmark}

<u>Second</u><u> </u><u>Equation</u>

x - 2y =  - 5 \\ 3 - 2(4) =  - 5 \\ 3 - 8 =  - 5 \\  - 5 =  - 5 \longrightarrow  \sf{true} \:  \green{ \checkmark}

Hence, both equations are true for x = 3 and y = 4. Therefore, the solution is (3,4)

<h3><u>Answer</u></h3>

\begin{cases} x = 3 \\ y = 4 \end{cases} \\  \sf \underline{Coordinate \:  \: Form} \\ (3,4)

8 0
3 years ago
Which phrase describes the linear relationship between the x and y values shown in the table?
kompoz [17]

9514 1404 393

Answer:

  C. y is 6 less than x

Step-by-step explanation:

It is not hard to check.

  A. 6 times x is 6×8 = 48, not 2

  B. 6 times y is 6×2 = 12, not 8

  C. 6 less than 8 is 2; 6 less than 9 is 3

  D. 6 more than 8 is 14, not 2

__

The relation described in C matches the table.

5 0
2 years ago
Which graph represents the compound inequality?
jenyasd209 [6]

Answer:

4th option

Step-by-step explanation:

open circle means more than or less than

n is more than -3 but less than 1

7 0
2 years ago
on day 1 a patient measures 5 feet and 11 inches tall. after 4 days of stretching the patient measures 5 feet and 11 inches tall
Vinvika [58]

Answer:

slope is zero

Step-by-step explanation:

zero slope is neither positive or negative; it indicates no change whatsoever

5 0
2 years ago
What is the initial value of the function:<br> f(x)=3/2(2)^x
Marina CMI [18]

Answer:

the initial value -- f(0) -- results in a value of 1.5

Step-by-step explanation:

f(0) = \frac{3}{2} · 2^{x}     (any value raised to the power of zero equals one)

f(0) = \frac{3}{2} · 1

f(0) = 3/2 or 1.5

7 0
2 years ago
Read 2 more answers
Other questions:
  • In october 2012, apple introduced a much smaller variant of the apple ipad, known as the ipad mini. weighing less than 11 ounces
    6·2 answers
  • Help me plz answer the pic
    10·2 answers
  • The expression 2(a+b)=−8.1 for certain values of a and b. Find the value of the following expressions for the same values of a a
    11·1 answer
  • If I clock in at 818 and take a 30 minute lunch what time can i clock out and have 8 hours worked​
    15·1 answer
  • Ramos went to a pizza shop and spent half of his money on lunch. If Ramos had $4.50 left after lunch,how much money did he have
    8·2 answers
  • Please answer correctly !!!!!! Will mark Brainliest answer !!!!!!!!!!!!!!
    9·1 answer
  • What is the probability of spinning green?
    12·1 answer
  • Can someone help me simplify and write in power form and show me step by step how to do it for both problem 8 and 9?
    9·1 answer
  • The cost of movie tickets at Central Cinema just changed. The old price and the new price are shown for adults and children. How
    15·1 answer
  • a car uses 9.5 L petrol per 100km a) determine the rate in km/L b) how far can the car travel with 47,5L petrol c) how many litr
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!