Ask question

Ask question

All categories

3 years ago

7

____ is necessary because researchers in the social sciences almost never have enough resources — time or money — to collect inf

ormation about the entire set of subjects of interest to them.

1 answer:

Tanya [424]3 years ago

4 0

Answer:

Sampling is necessary because researchers in the social sciences almost never have enough resources — time or money — to collect information about the entire set of subjects of interest to them.

Step-by-step explanation:

Sampling is done because you usually cannot gather data from the entire population. Even in relatively small populations, the data may be needed urgently, and including everyone in the population in your data collection may take too long.

You might be interested in

What is the rate of change for the function f(x)=2x-3

Stolb23 [73]

Answer:

2

Step-by-step explanation:

f(x) = 2x - 3 is a linear function

The rate of change of a linear function is the measure of the slope.

The equation is in slope- intercept form, that is

y = mx + c ( m is the slope and c the y- intercept )

y = 2x - 3 has slope m = 2

Thus rate of change = 2

4 0

3 years ago

I need help! Will mark Brainliest for full answer!!!

Fed [463]

Answer:

Part 1) $x=11$

Part 2) $k=57.2$

Part 3) $y=9.2$

Part 4) $x=2.375$

Part 5) $y=3.3$

Part 6) $k=6.7$

Part 7) $k=115.2$

Part 8) $y=1.4$

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent an inverse variation if it can be expressed in the form $y*x=k$ or $y=k/x$

Part 1) y varies inversely with x. If y = 3 and k (the constant of variation) = 33, what is x?

we have

$y*x=k$

$y=3$

$k=33$

substitute and solve for x

$3*x=33$

Divide by 3 both sides

$x=33/3$

$x=11$

Part 2) y varies inversely with x. When y = 11, x = 5.2. What is the value of k, the constant of inverse variation?

we have

$y*x=k$

$y=11$

$x=5.2$

substitute and solve for k

$11*5.2=k$

$k=57.2$

Part 3) y varies inversely with x, and k (the constant of variation) = 72. What is the value of y when x = 7.8?

we have

$y*x=k$

$x=7.8$

$k=72$

substitute and solve for y

$y*7.8=72$

Divide by 7.8 both sides

$y=72/7.8$

$y=9.2$

Part 4) y varies inversely with x. If y = 8 and k (the constant of variation) = 19, what is x?

we have

$y*x=k$

$y=8$

$k=19$

substitute and solve for x

$8*x=19$

Divide by 8 both sides

$x=19/8$

$x=2.375$

Part 5) y varies inversely with x, and k (the constant of variation) = 23. What is the value of y when x = 7?

we have

$y*x=k$

$x=7$

$k=23$

substitute and solve for y

$y*7=23$

Divide by 7 both sides

$y=23/7$

$y=3.3$

Part 6) y varies inversely with x. When y = 6.7, x = 1. What is the value of k, the constant of inverse variation?

we have

$y*x=k$

$y=6.7$

$x=1$

substitute and solve for k

$6.7*1=k$

$k=6.7$

Part 7) y varies inversely with x. When y = 9.6, x = 12. What is the value of k, the constant of inverse variation?

we have

$y*x=k$

$y=9.6$

$x=12$

substitute and solve for k

$9.6*12=k$

$k=115.2$

Part 8) y varies inversely with x, and k (the constant of variation) = 5.6. What is the value of y when x = 4?

we have

$y*x=k$

$x=4$

$k=5.6$

substitute and solve for y

$y*4=5.6$

Divide by 4 both sides

$y=5.6/4$

$y=1.4$

6 0

3 years ago

Is 3/0 undefined??? In dividing by zero

fiasKO [112]

Yeah, it's undefined. Dividing by zero results in an undefined result

3 0

4 years ago

He radius of a circle is 2 kilometers. What is the area of a sector bounded by a 45° arc?

faust18 [17]

We know that
area of a circle=pi*r²
for r=2 km
area of a circle=pi*2²-----> 12.56 km²

if 360° (full circle) has an area of---------> 12.56 km²
45°---------------------------------> x
x=45*12.56/360-----> x=1.57 km²

the answer is
1.57 km²

7 0

3 years ago

I Need The Answer Plz!!

hram777 [196]

Answer:

9.0

Step-by-step explanation:

In a triangle, the midline joining the midpoints of two sides is parallel to the third side and half as long, so

3x-2 = 50/2

3x-2 = 25

3x = 25 + 2

3x = 27

x = 27/3

x = 9

6 0

4 years ago

Read 2 more answers