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Lorico [155]
3 years ago
9

A journalism teacher wants to determine

Mathematics
2 answers:
Darina [25.2K]3 years ago
4 0

Answer:

the representative sample in this situation is 120students in 4 different classes

yawa3891 [41]3 years ago
3 0

Answer:

Randomly choose 40 kids to survey.

Step-by-step explanation:

This is for every one who needs the answer to this question but cant get it so here you go!

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Determine whether or not F is a conservative vector field. If it is, find a function f such that F = ∇f. (If the vector field is
kodGreya [7K]

We're looking for a scalar function f(x,y) such that \nabla f(x,y)=\vec F(x,y). That is,

\dfrac{\partial f}{\partial x}=2x-6y

\dfrac{\partial f}{\partial y}=-6x+6y-7

Integrate the first equation with respect to x:

f(x,y)=x^2-6xy+g(y)

Differentiate with respect to y:

-6x+6y-7=-6x+\dfrac{\mathrm dg}{\mathrm dy}\implies\dfrac{\mathrm dg}{\mathrm dy}=6y-7

Integrate with respect to y:

g(y)=3y^2-7y+C

So \vec F is indeed conservative with the scalar potential function

f(x,y)=x^2-6xy+3y^2-7y+C

where C is an arbitrary constant.

6 0
3 years ago
Which angle is an exterior angle of the triangle?
svetoff [14.1K]

Answer:

Angle 4

Step-by-step explanation:

Exterior is the angle that is on the outside of the triangle.

8 0
3 years ago
Read 2 more answers
If you do these 2 problems you get 100 points
frosja888 [35]

Answer:

BELOW

Step-by-step explanation:

DO I HEAR 100 POINTS? Yes.

For the first image, that answer is A.

For the second image, I'm a bit confused on which problems you want me to do, so I'll do number 10, 11, and 14.

10) Yeah, you're correct, it is J.

11) (1,-6), (-2,-5), (8,2) (4,0) and I can't see the last point so..

14)  Can't see the question :(

4 0
2 years ago
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Order the numbers below least to greatest<br> Please help me
n200080 [17]

The given numbers ordered from least to greatest is:

{√7 , 2.8..., π, √17,  4.6}

<h3>How to order the numbers from least to greatest?</h3>

First, we need to write all the given numbers in decimal form so we can accurately compare them.

The numbers are:

{4.6, √7, π, 2.8..., √17}

Rewriting all of these in decimal form:

√7 = 2.64

π = 3.14159265....

√17 = 4.12

Then the numbers are:

{4.6, 2.64, 3.14159265....,  2.8..., 4.12}

Now is easier to order these numbers, ordering them from least to greatest we will get:

{2.64, 2.8..., 3.14159265...., 4.12, 4.6}

Now, using the original notation we get:

{√7 , 2.8..., π, √17,  4.6}

If you want to learn more about ordering numbers:

brainly.com/question/1094377

#SPJ1

3 0
1 year ago
In the same year, the average finishing time for u.s. women was four hours and 41 minutes. What was their average speed in miles
EleoNora [17]

I need to know the distance.

speed= distance/ time

If you want to figure thier speed you need to divide the distance ( miles) by their time ( hours)

3 0
3 years ago
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