3 years ago

Match the descriptions as primary or secondary data

Mathematics

1 answer:

Solnce55 [7]3 years ago

5 0

Answer:

Primary Data.
Secondary Data.
Secondary Data (I think)
Primary Data.

Step-by-step explanation:

Hope this helps!

You might be interested in

Find two negative consecutive odd integers whose product is 143

Likurg_2 [28]

The answer is -11 and -13

4 0

3 years ago

Find the maximum rate of change of f at the given point and the direction in which it occurs. f(x, y) = 9 sin(xy), (0, 8)

malfutka [58]

Answer:

The magnitude is $\Delta f(0,8) = 72$

The direction is $i$ i.e toward the x-axis

Step-by-step explanation:

From the question we are told that

The function is $f(x, y) = 9sin(xy) \ \ \$

The point considered is $(0,8 )$

Generally the maximum rate of change of f at the given point and the direction is mathematically represented as

$\Delta f(x,y) = [\frac{\delta f(x,y)}{\delta x } i + \frac{\delta f(x,y)}{\delta y } j ]$

$\Delta f(x,y) = [\frac{\delta (9sin(xy))}{\delta x} i + \frac{\delta (9sin(xy))}{\delta y} i ]$

$\Delta f(x,y) = [9y cos (x,y) i + 9xcos (x,y) j]$

At $(0,8 )$

$\Delta f (0,8) = [9(8) cos(0* 8)i + 9(8) sin(0* 8)j ]$

$\Delta f (0,8) = 72 i$

3 0

3 years ago

Find the sum of the first 30 terms of the sequence below. an=4n+1

dmitriy555 [2]

That would be 1,890.

6 0

3 years ago

Read 2 more answers

4x2 + 4x - 2y2 +3y, when x is equal to -2 and y is equal to 3?

ladessa [460]

Answer

-1

Step-by-step explanation:

Just plug in the numbers.

5 0

4 years ago

Read 2 more answers

How do u mark a person with brainlest please acttually tell me

ruslelena [56]

Answer:

this is how you do it.. press the crown button in an answer

Step-by-step explanation:

7 0

3 years ago