Find the simplest expression for the perimeter of the triangular roof truss.side 1: 3a+4

side 3: 2a-7

side 2: 9a+11

Answers

Answer 1

Answer: perimeter of triangle = all sides added up
3a + 4 + 2a - 7 + 9a + 11

now add like terms
3a + 2a + 9a = 5a + 9a = 14a

4 - 7 + 11
= -3 + 11 = 8

so we have 14a + 8
as our simplest expression

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What pattern will result from plotting all points x, y that satisfy an equation in the form ax+by=c

Answers

You only need to plot two points, because the pattern is a
straight line, and any two points on it define the entire line.

-- The slope of the line is [ -a/b ] .

-- The line intersects the x-axis at [ x = c/a ] .

-- The line intersects the y-axis at [ y = c/b ] .

Answer:

-- The slope of the line is [ -a/b ] .

-- The line intersects the x-axis at [ x = c/a ] .

-- The line intersects the y-axis at [ y = c/b ] .

Step-by-step explanation:

Which of the following percents is more than 2 out of 6 but less than 3 out of 5?a) 33%
b) 50%
c) 75%
d) 85%
PLEASE HELP QUICKLY!!!!!!!!!!!!!!

Answers

2/6 = 33.33%

3/5 = 60%

So which one is in between those two?

Of course! It has to be B) 50%.

Hope that helps :)

ms. reynolds, the math teacher, was disappointed to announce that only 22% of her 68 students passed an exam. How many students failed the test?

Answers

either a student passes an exam or fails it. that means the percentage of students who pass plus the percentage of students who fail must add to 100%. this also means that if 22% pass, then 78% fail. there are 68 students total and 78% fail so the number of students failing is:
(78/100)(68) = 53.04 which is approximately 53 students.

let me know if you have any questions!!!!

of the 25 students on a field trip, 16 students bring cameras. what percent of the students bring cameras

Answers

its simple do 16 divided by 25 then when you get that answer multiply it by a hundred and you have your answer

How many inches are in three fourths of a yard

Answers

the answer is 27 inches. I am 90% sure of it. It is 27 because a yard has 36 inches. So you do the rule of three. 36/4*3. 36/4 is 9. 9*3=27. I hope you pass your test! :D

Compare the decimals 9,135.40 and 9,135.4.