MATHEMATICS MIDDLE SCHOOL

HELP PLS !!
i would appreciate it a lot
HELP PLS !! i would appreciate it a lot - 1

Answers

Answer 1
Answer:

Answer:

1. x=158

2. x=58

3. x=68

4. the shape is a 20-gon

6. the shape has 52 sides

Step-by-step explanation:

1. the sum of interior angles of a nonagon is 1260. You add all the numbers that are shown. that comes out to 1102. 1260-1102 is 158.

2. the sum of interior angles of a 4 sided shape is 360. you add 2x+5+2x+7+x+x and you get 6x+12. then you make an equation, 6x+12=360. subtract 12 from both sides and you get 6x=348. Divide by 6 on both sides and you get x=58

3. the sum of interior angles of a pentagon is 540. you add x-8+3x-11+x+8+2x+7+x and you get 8x-4. then you make an equation, 8x-4=540. you add 4 to both sides and you get 8x=544. Divide by 8 on both sides and you get x=68

4. I don't know how to find it, but I know that a 20-gon has the sum of interior angles that equals up to 3240. sorry

5. I am sorry, i don't know how to do that

6. use (n-2)180. n is the number of sides. replace n with 52. (52-2)180. (50)180 = 9000

Related Questions

Sandy has $200 in her bank account. If she writes 6 checks for exactly $19.98, what expression describes the change in her bank account?
Help me please!!! Will mark the Brainliest!
Please!!! help, urgent math problem!
A group of students must collect at least $160 to organize a science fair. They have already collected $20. Which graph best represents the possible amounts of money the students still need to collect? (1 point) Number line graph with closed circle on 160 and shading to the right. Number line graph with closed circle on 140 and shading to the right. Number line graph with closed circle on 20 and shading to the right Number line graph with closed circle on 180 and shading to the right.
What times 12 equals 36

a travel company has 132 tourists who are going on a boat ride. each boat holds 8 passengers. how many boats does the travel company need to book ?

Answers

ok so
total capacity that all boats ordered can carry should be at least 132
total capacity that all boats ordered can carry =number of boats times number of people each boat can carry

people each boat can caryy=8 people
x=numbe of boats
132=x times 8
divide both sides by 8
132/8=x times 8/8
16.5=1x
16.5=x
you can't order 0.5 boats so round up to nearest whole
16.5 to 17

answer is 17 boats

132/8=16.5 boats
since you cant get 16.5 boats, round up to 17 boats.

50 points decreased by 26% is points.

Answers

50*(26)/(100)\n\n=(50*26)/(100)\n\n=(1300)/(100)\n\n=13\n\n50-13={\boxed{ \bf 37}}

50 points decreased by 26% is 37 points.

50*(26)/(100)\n\n= 50 * 0.26\n\n=13\n\n 50-13={\boxed{ \bf 37}}

50 points decreased by 26% is 37 points.
First off lets find 26% of 50.

26 / 100 * 50 =  13.

Since we are decreasing, we subtract this value from 50 points.

= 50 - 13 =  37 points.

OR

Since we are decreasing we say 100% - 26% = 74%.

We now perform 74% of 50  =  74/100 * 50 = 37.

Either method is correct, and we arrive at the same answer.

So it is 37 points.

3/4 -3/8 in simplest form?

Answers

3/4 and 3/8 have to have equal denominators, so multiply 3/4 by 2/2 because it's equal to one, so it doesn't change the value of the fraction, but it makes the denominator (the number on the bottom) bigger. 
3/4 x 2/2 = 6/8
Now subtract.
6/8 - 3/8 = 3/8
Don't subtract the denominators. 
3/8 can't be simplified. 

3/4-3/8 can be simplified as 3/8.

Since 3/4 and 3/8 must have denominators that are equal, multiplying 3/4 by 2/2, which is equal to 1, increases the denominator (the number at the bottom), without changing the value of the fraction.

3/4 x 2/2 = 6/8

Subtract now.

6/8 - 3/8 = 3/8

Since 3/8 can not be simplified.

Therefore, 3/8 is the simplest form of 3/4 -3/8.

Learn more about Mathematical operations here:

brainly.com/question/20628271

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kristy ran 24 laps in chairity run and then walked 0.2 kilometer to the presentation table. The total distance Kristy traveled was 29.6 kilometers. What was the distance of each lap? Explain how you solved the problem.​

Answers

Answer:

1.225km is equal to each laps

Step-by-step explanation:

Since Kristy total distance traveled = 29.6km

And Kristy ran 24 laps and later walk 0.2km. it simply implies that

Total distance traveled = distance covered running + distance covered walking

Since we know that

Total distance traveled = 29.6km

distance covered running = 24 laps

distance covered walking = 0.2km

Distance covered running in km = total distance traveled - distance covered walking

Distance covered running in km = 29.6km - 0.2km = 29.4km.

To now find the distance for each lap.

Since we have:

Distance covered running in km = 29.4km.

Distance covered running in lap = 24 laps

i.e

24 laps = 29.4km

1 lap = x

Use cross-multiple

24 laps * x = 29.4km × 1 lap

x = 29.4km / 24

x = 1.225km

Therefore

1.225km is equal to each laps.

totaldistanceof24laps

29.6km - 0.2km

=29.4km

totaldistanceofeachlap

24 laps = 29.4km

1 lap = ?

Usecross-multiple

24 laps × X = 29.4km × 1 lap

X = 29.4km / 24

X = 1.225km

Answer

1.225km

What is a straight line, is part of a line and has 2 end points

Answers

That is a line segment

Use the Distributive property to rewrite each expression in it's equivalent form -7y(4-y)
please show your work !!
hello students from all over the world ! please , someone be kind enough to help me on this math problem ( if u are in 7th grade or higher u can handle it !) :)
grade of the question : 7th grade
subject : math, please help me thanks !! :)

Answers

The arrows indicate that you multiply each one, that way you don't forget in the long run, especially once you get to multistep algebraic equation.

So first you multiply the -7y by the 4 and you get -28y, if you remember a negative times a positive is a negative (I like to think of it as bad things that happen to good people is a  bad thing ;) ) Now you take the -7y, because you have to multiply it by both numbers in the parenthesis, and multiply it to the -y, and since when you multiply two y's together it becomes squared it is 7y^2 (squared) and since both are negative, they cancel out and become a positive (bad things that happen to bad people is a good thing in a sense) So therefore your answer for the equivalence is 7y^2 + -28y

Hope that helped, my math teacher has a lot of tricks for remembering this stuff :)
Distributive property is just saying multiply something. So you get -7y times 4, that gives you -28y for the other part you are going to do the same. But in this time y is being multiplied by it self so that mean that it is going to be something with an exponent. The answer for the second part is 7y^2 it turned into a positive because a nagar ice times a negative turns into a positive.
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