Prompt

Which statement best describes what energy transfer diagrams show?.

fredd [130]

Answer:

Energy can change form, but the total amount of energy stays the same.

4 0

2 years ago

The current in two lightbuibs wired in a series circuit

Harlamova29_29 [7]

<span> The current is inversely proportional to the resistance. I = V / R.

</span>

7 0

3 years ago

There are 39 students in Ms. Salazar's chemistry class. If Ms. Salazar divides the class into 9 lab groups of 4 or 5 students ea

I am Lyosha [343]

Answer:

3 groups of 5

Explanation:

if x is the number of groups of four, and y is the number of groups of five, then 4x +5y =39 (four students per group of four times the # of groups of four, and 5 students per group times the # of groups of five, which should equal the total amount of students, 39). also, x+y=9. (number of each type of group = 9 groups total).

then, use these two equations and solve for y, by "canceling out" x. there are many ways to do this, but i'm going to use subtraction.

4x-5y=39

x+y=9

you want to change the equation

x+y=9

into

4x+4y=36

by multiplying the whole equation by four. because in order to cancel out the x, you need it to equal zero. in the first equation, its 4x.

so its now

4x-5y =39 MINUS

4x+4y=36

___________

y=3

you can check your work because the remaining 6 groups of four (24 total students) plus the 3 groups of five (15 total students) adds up to equal 36

6 0

3 years ago

What happens at the end of the story? Question 3 options: Mrs. Jones adopts Roger. Mrs. Jones reports the attempted theft to the

makvit [3.9K]

The event which happens at the end of the story of Thank You Ma'am is:

<u>C. Roger leaves and never sees Mrs. Jones again.</u>

The novel is titled Thank You Ma'am and written by Langston Hughes details the interaction which a young thief has with a wealthy woman and how her response to finding out he was a thief was different to what was expected.

After Mrs Jones discovers that Roger steals from her, she does not report him to the police, rather she takes him to her house!

She treats him kindly and trusts him, which shows another side of Roger which is that he is a kind hearted person who would do good if he is properly taken care of.

However, the end of the story shows Mrs Jones telling Roger goodnight and in the end they never see each other again, but Roger has learnt a very valuable lesson.

Therefore, the correct answer is option C