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3 years ago

PLZ HELP ASAP IM ON THE TEST NOW Which sample is biased?

2 answers:

6 0

A. Interviews of random teens at a rock concert

These teens are all fans of the same music because they are attending the same concert. They cannot accurately represent all teens music choices because they are all bias toward the same music style. They are especially excited about it at the concert so responded are even more skewed.

Sophie [7]3 years ago

3 0

I think (a) because they interviewed people who were already at a rock concert about what musician they enjoy the most

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25÷2 3/8 I need the anser please

lora16 [44]

Answer:- 100/3 in fraction or you can write I decimal too (33.33)

7 0

3 years ago

__•__=42<br> __+__=23<br><br><br> Can someone help me solve this?

RoseWind [281]

Answer:

21 * 2 = 42

21 + 2 = 23

Step-by-step explanation:

well I know that 6 * 7 = 42 so I’m assuming that’s correct

Then 11 + 12 = 23 it could be the answer I’m not positive for this one though.

The first one should be correct.

Maybe try

21 * 2 = 42

21 + 2 = 23

3 0

2 years ago

What is f(x) = 7x2 42x written in vertex form? f(x) = 7(x 6)2 – 6 f(x) = 7(x 6)2 – 42 f(x) = 7(x 3)2 – 9 f(x) = 7(x 3)2 – 63.

ioda

The vertex form of the function f(x) is $\rm f(x)= 7 ( x + 3 )^2 - 63$ .

<h2>Given </h2>

Function; $\rm f(x) = 7x^2 + 42x$

<h3>What is the vertex form of function?</h3>

The vertex of a parabola is the point at which the parabola passes through its axis of symmetry.

The standard equation which represents the vertex form of the function is;

$\rm f(x) =(x-h)^2+k^2$

Where h and k are vertexes of the given parabola.

The function is in vertex form;

$\rm f(x)= 7 x^2 + 42 x\\\\ f(x) = 7 ( x^2+ 6 x ) \\\\ f(x)= 7 ( ( x^2+ 6 x + 9 ) - 9 ) \\\\ f(x)= 7 ( x + 3 )^2 - 63$

Hence, the vertex form of the function f(x) is $\rm f(x)= 7 ( x + 3 )^2 - 63$ .

To know more about the Vertex form lick the link given below.

brainly.com/question/9070346

6 0

2 years ago

is 3240 a perfect cube? if not then by which smallest number should 3240 be multiplied so that the product is a perfect cube?

Debora [2.8K]

Answer:

<h2>3240 it's not a perfect cube.</h2><h2>The smallest number should 3240 be multiplied so that the product is a perfect cube is 15² = 225.</h2>

Step-by-step explanation:

3240 is a perfect cube if 3240 = n³ (n ∈ N).

Use the Prime Factorization:

$\begin{array}{c|c}3240&2\\1620&2\\810&2\\405&5\\81&3\\27&3\\9&3\\3&3\\1\end{array}\\\\3240=2\cdot2\cdot2\cdot5\cdot3\cdot3\cdot3\cdot3=2^3\cdot3^3\cdot5\cdot3=(2\cdot3)^3\cdot5\cdot3=6^3\cdot5\cdot3$

$3240=6^3\cdot15\qquad\text{multiply both sides by}\ 15^2\\\\3240\cdot15^2=6^3\cdot15^3=3240\cdot15^2=(6\cdot15)^3=90^3$

Used:

$a^n\cdot a^m=a^{n+m}\\\\(ab)^n=a^nb^m$

5 0

3 years ago

Please answer asap don’t troll!!!

zubka84 [21]

you will do as you said yes yes i is fine with me but i’m going on the right now so bye bye u it was correct that

8 0

3 years ago