To conduct a survey on current social work majors, a researcher gets a list of all students who have declared a social work major from the registrar from which a sample will be drawn.

This list is known as a sampling frame.

The sampling frame is the list from which units are drawn for the sample.

Hence, the list is known as the sampling frame.

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3 0

2 years ago

Find the roots of the parabola given by the following equation <br> 2x^2+5X-9=2x

natta225 [31]

Answer:

$x=-3\:or\:x=\frac{3}{2}$

Step-by-step explanation:

The given parabola has equation

$2x^2+5x-9=2x$

We rewrite in standard form to obtain:

$2x^2+5x-2x-9=0$

$2x^2+3x-9=0$

Split the middle terms to get:

$2x^2+6x-3x-9=0$

Factor by grouping:

$2x(x+3)-3(x+3)=0$

$(x+3)(2x-3)=0$

$x=-3\:or\:x=\frac{3}{2}$

7 0

3 years ago

Sides AB and BC are congruent. If BAC =22 , then ABC = °.

lina2011 [118]

<span>ABC =22° because AB and BC are congruent
</span>

7 0

3 years ago

Is 1,4,9 and 16 a geometric sequence

Umnica [9.8K]

No because 4/1 does not equal to 9/4 or 16/9

5 0

3 years ago