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Nana76 [90]
2 years ago
12

a store manager sends an email survey to customers who have registered at the store's websites. Why is this survey biased?​

Mathematics
1 answer:
Shalnov [3]2 years ago
8 0

The survey is biase because it is only surveying shoppers that have registered on the website,.

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What is the factored form of a2 – 121?
Flura [38]

Answer:

The factored form a^2-121 is (a+11)(a-11).

Step-by-step explanation:

Given : a^2-121

We have to write the given expression in factored form.

Factor form of an expression is writing the expression in lower power form such that the product of factors given the original expression

Consider the given expression  a^2-121.

We know the algebraic identity x^2-y^2=(x+y)(x-y)

Here a^2-121=a^2-(11)^2.

Comparing with identity stated above , we have x= a , b = 11 , thus, we get

a^2-(11)^2=(a+11)(a-11).

Thus, the factored form a^2-121 is (a+11)(a-11).

7 0
2 years ago
What does this mean
andriy [413]
To use arithmetic to solve ot
7 0
2 years ago
Choose any positive integer. Powers of two here are not very interesting, so choose something else. If the number you have chose
Yakvenalex [24]

Answer:

Step-by-step explanation:

Let the integer be 6 for even and 7 for odd (say)

For 6, we divide by 2, now get 3.  Now we multiply by 3 and add 1 to get 10. Now since 10 is even divide by 5, now multiply by 3 and add 1 to get 16.  Now divide by 2 again by 2 again by 2 again by 2 till we get rid of even numbers.

The result is 1, so multiply by 3 and add 1 we get 4 now divide 2 times by 2 to get 1, thus this result now again repeats after 2 times.

Say if we select off number 3, multiply by 3 and add 1 to get 10 now divide by 5, now repeat the same process as above for 5 until we get 1 and it gets repeated every third time.

Thus whether odd or even after some processes, we get 1 and the process again and again returns to 1.

5 0
2 years ago
Without plotting any points other than intercepts, draw a possible graph of the following polynomial:
babunello [35]
The first thing to do is find the x-intercepts of the function so that you can plot them. Set the function f(x) to zero and find the values of x.

0 = <span>(x + 8)3(x + 6)2(x + 2)(x − 1)3(x − 3)4(x − 6)
There are 6 intercepts:
x+8=0   ---> x= -8 
x+6=0   ---> x=-6
x+2=0   ---> x=-2
x-1=0    ---> x=1
x-3=0    ---> x=3
x-6=0    ---> x=6

The 6 intercepts are plotted as shown in the picture. The tool I used was Microsoft Excel. This is one possible sketch of the graph. The trend could move in any ways as long as it passes these 6 intercepts.</span>

4 0
2 years ago
Read 2 more answers
An electronics store makes a profit of $69 for every standard DVD player sold and $85 for every portable DVD player sold. The ma
Vikentia [17]

Answer:

  see below

Step-by-step explanation:

The store's profit is the sum of the profit on each player multiplied by the number of players. That is, the profit on standard players is 69s, and that on portable players is 85p. The manager wants the sum of these to be more than 415.

7 0
2 years ago
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