MATHEMATICS HIGH SCHOOL

Find the area of an equilateral triangle with perimeter 18.

Answers

Answer 1
Answer:

Answer:

15.59 un²

Step-by-step explanation:

18 ÷ 3 = 6

15.59 un²

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Please help will mark brainliest

How to factor: a^2+11a+18

Answers

a^2+11a+18\n\n-----------------------------\n\n11=9+2\n18=9\cdot2\n\n-----------------------------\n\na^2+11a+18=(a+9)(a+2)
a^2+11a+18=a^2+2a+9a+18=a(a+2)+9(a+2)=\n\n=(a+2)(a+9)

The high school is hosting an event for seniors but will also allow some juniors to attend. The principal approved the event for 200 students and decided the number of juniors should be 25% of the number of seniors. How many juniors will be allowed to attend?

Answers

Using percentage, the numbers of juniors will allowed to attend an event is 50.

What is percentage?

Percentage is "fraction or ratio, in which value of whole is 100".

According to the question,

The principal approved the event for 200 students. Number of juniors will be 25% of number of seniors.

Suppose 100% of student is 200 and then 25% of student will be

100% = 200

25%   = x

100x = (200) (25)    [cross multiplication]

     x = 50.  

Hence, the principal allowed number of student to attend an event is 50.

Learn more about Percentage here

brainly.com/question/13024759

#SPJ2

Answer:

First you do number of students being approved by the principal times the number of juniors allowed over 100.

This simply means that 200*25/100=50

Hugh has to earn at least $400 to meet his fundraising goal. He has only 100 books that he plans to sell at $8 each. Which inequality shows the number of books, x, Hugh can sell to meet his goal?

Answers

If you would like to find the inequality that shows the number of books Hugh can sell to meet his goal, you can do this using the following steps:

x = ? ... the number of books
$8 * x >= $400
8 * x >= 400
x >= 400 / 8
x >= 50 books

The correct result would be: $8 * x >= $400. 

Answer:

50 ≤ x ≤ 100

Step-by-step explanation:

How do i learn algebra

Answers

You can use online resources such as khanacademy.org to learn algebra :) There are many websites and books that you can get from the library that can teach you some of the basic information that you will need to know.
Good luck :)
Its a little something cLled the internet

Is it true or false that any three points are contained in exactly one plane?

Answers

Please ,   Not delete my answer, because is correct.

It is false that any three points are containded in exactly one plane.

For example: if the points are aligned, these points aren´t containded in a plane, these points  are containded in a line.

O= point.

--------------O-----------O---------O---------  (these points are contaided in a line).




         o                    o            (these points are contained in a plane)
                  
                   o
I'm not sure but I think it's true

2x-y=4 find the slope of the graph

Answers

The\ slope-intercept\ form:y=mx+b\n\nm-slope\nb-y-intercept\n\n2x-y=4\ \ \ \ /-2x\n\n-y=-2x+4\ \ \ \ \ /\cdot(-1)\n\ny=2x-4\n\nSlope:m=2
Change it to the form of y=mx+b where m = slope and b is the intercept. So to do this just move the x over, then you divide each side by -1, because the y is negative. So you finally get y=2x-4, the slope is 2!
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