We will be solving equations all year long, and this will continue throughout all of your future mathematics courses.
1. Out of all of the equations we've solved in this chapter, what is the most difficult type for you to solve? (If everything feels easy to you, what do you think is the most difficult out of the easier problems?)
2. Now invent an equation that you think would be tough for most of the students in the class to solve. Then solve it. Be very careful to make sure that you write the equation correctly using the keyboard. Post the equation and its solution in this same blog.
I think the Triangle Area equation was the hardest out of the equations we learn in this chapter. It was difficult to solve due to the steps we had to take to find the area. For the rectangle or the square, you just had to do Length Times Width. However, for the triangle, it was Base Times Height Divided by two. Also we had to find the base and the height by ourselves. That's why I think the triangle area equation was the hardest.
ReplyDeleteExample:
Mr. Jobe is a huge fan of triangles. So he tries to build a triangular backyard. He wants one side of his backyard to be touching his house. The one side is 65feet. Then he wants a lamp perpendicular to his house 89feet away. What is the area of his backyard?
Solve:
65*89/2= Backyard
65*89=5785/2=2892.5 sq. feet
Mr. Jobe's backyard is 2892.5 sq. feet
1. I thought the most difficult problem out of the easier problems was inequalities. I thought it hard because you had to change signs every time you multiplied a negative to the variable.
ReplyDelete2. Q: What is the answer to 4x+1/8y?
y=3
x=1/8
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
A: 1
I think the most difficult equation is the perimeter formulas.
ReplyDelete540=4(3x-15)-7x+2(5x+45)
540=12x-40-7x+10x+90
540=15x+30
510=15x
x=34
1. I think that the hardest problem was where you have the perimeter of a rectangle the length is y and the width is 2y.
ReplyDelete2. A=10 Y=10 Solve for X
4a + 8x - 9x - 10x + 2y = 10
40 + (-1x) -10x + 20 = 10
60 + (-11x) = 10
-60 -60
-11x = -50
/-11 /-11
x= 4.545
I think equations can be a little bit complicated and very tough. There are many calculations and it makes me stressed out because there are so many numbers that people need to add subtract, multiply, etc. I think the most easier problem was like the inequalities and other simple equations.
ReplyDeleteEquation Problem: There are 100 students that are trying to enter the KIS school. 73 students got in the school. How many people didn't get entered in the school?
1. 73+x=100
2. 73-73=100-73
3. x=27
I thought the perimeter formula was hard because if a value had a variable, you had to go through a lot of work to find the value of it.
ReplyDelete1) I had a hard time in equations with alot of numbers.
ReplyDelete2)Question: 9x-8x+6x+2-1+9-8=-109
Answer:15.2857143...I think
1) From the things we've been learning from, I think the inequalities were the hardest, since if the number that you are diving or multiplying a negative number, the signs change.
ReplyDelete2) -3x≥9
X≤-3
:)
I think that the most difficult equations are the ones that are often worded confusingly to trick you or the ones with multiple variables instead of just one. These equations aren't THAT hard though, just tricky.
ReplyDeleteEquation: Find the value of x
3x+4x+x+(102/2x17)-(3x+2x)=57
Steps:
1.8x+(102/34)-(5x)=57
2.8x+3-5x=57
3.3x+3=57
4.3x=57-3
5.3x=54
6.x=54/3
7.x=18
ANSWER: 18
Out of all the equations we've solved, the hardest problem for me was the one we did recently with the length and width. For example how the width is 5 centimeters longer than the length. At first I didn't know how to solve that question. I am not good at questions like these or questions where you have to solve 2 numbers but the one number is 1.5 times bigger than the other number and the equal 200 (this is just an example, the problem probably won't make sense >ㅁ< ). This was hard for me because I don't know the proper way to solve those kind of questions. The way I normally solved them was to try out different random numbers~ :) It's not a good idea to do that when you have a time limit but that was the usual way for me to solve those questions.
ReplyDeleteAn example:
There is a rectangle that has an perimeter of 200 centimeters and a length that is 1.5 times longer than the width. Find the length and the width.
Solve:
P=2(l) + 2(w)
200=2(1.5w) + 2w
200=3w + 2w
200=5w
w=40cm
l=40(1.5)
l=60cm
ANSWER: width is 40 cm and length is 60 cm
1. The most difficult problems out of the easiest problems was the line graph. This was the most difficult problem to me because I always get confused when to change the line direction. I sometimes forget to color the circle too.
ReplyDelete2. My equation is 128=124/248x + 63.
128=1/2x+63
64=x+63
1=x
1. For me, nothing is really difficult to solve, but I think that the inequalities are the hardest to solve. It's hardest because you could make stupid mistakes like not flipping the sign when you divide or multiply by a negative. Also, it can be confusing to graph the inequality.
ReplyDelete2.
Question:
100+3x-7x+18>40
Answer:
100+3x-7x+18>40
118-4x>40
-118 -118
-4x> -78
/ -4 /-4
x<19.5
None of the equations were hard to me. I think most hard one of all the easy one was things like "length is x and width is 4 less than length. Perimeter is 12, what is the area."
ReplyDeleteDifficult equation
Jay is going to china in school.The rule said you can't bring more than 20,000won Jay now has to earn some money. Her mom said,if Jay help her house work, each hour she will give me 2,000won. how many hours does Jay has to help her mom in maximum? Write on inequality.
Solution
20,000≥2,000x
10≥x
10 hours
The hardest equations for me in this chapter was calculating the decimals when I was solving the problems. Especially, when I divide by decimals.
ReplyDelete6.5x = 13
6.5x = 13
-------- , x = 2
6.5
x=2
All the equations were hard but I think the most hardest equation were the ones that were like "the width is this much and the length is 2cm more then the width." Those questions were really confusing and it was difficult.
ReplyDeleteFor Example:
Mr.Jobe wants to build a new house and the house's Width is 121m. the Length is 2m times more than the Width. Find the perimeter.
P=2(l) + 2(w)
x=2(121)+2(2)
242+4=246
Answer: x=246=Perimeter
oops.. anonymous is JUNE SHIN 7E
ReplyDeleteI thought solving equations was quite easy, but for some that had taken me a little longer was probably the questions that had two variables in the equation. Other than that I think I don't trouble too much with equations.
ReplyDeleteQ: 120x+7-8+23x-3>-89
A: x=85/145
Hey guys,
ReplyDeleteJust so you know, if you solved your equation incorrectly, you received two points off of this blog post.