Mathematics Middle School

Writing equations to find Unkown Notes

Can sombody write me some guided notes about that topic?

Answers

Answer 1
Step step it’s 3 y’all

Related Questions

Can you please explain this to me and answer

Answers

1)73 degrees
all the angles of a triangle add up to 180 degrees.
23+84= 107
180-107=73

2) 28 degrees
110+42= 152
180-152= 28

Explanation:

All sides in a triangle is equal to 180°
So whenever given two sides only, add them up, and subtract from 180. That will give you the missing sides length.
So 23 + 84 = 107
180 - 107 = 73
The missing side of the triangle is equal to 73°.

110 + 42 = 152
152 - 180 = 28°
The missing side of the triangle is equal to 28°.

Another example is:
100°, 40°
Front the missing side in this triangle.
100 + 40 = 140°
180 - 140 = 40°
The missing length is 40°

!GIVING BRAINLIEST!

Find the sum or difference.
(56 – 9) – 3(8 – 2b)

Answers

Answer:

23 - 6b

Step-by-step explanation:

(56 - 9) - 3(8 - 2b)

(47) - 3(8 - 2b)

47 - 24 - 6b

23 - 6b

What angle corresponds with angle 6?

Answers

It’s actually 3, because 3 has the same angle as 6

The mass of a textbook is about 1.35 kilograms. About how many pounds is this?

1.35 kilograms is about ___ pounds.

Answers

Answer:

3 lbs

Step-by-step explanation:

2.97 is bout 3 lbs

Answer:

3 pounds

Step-by-step explanation:

1.35 kilos = 2.976241

2.976241 is about 3 pounds

PLEASE HELP QUICK!!!
1/7(105 + r) = 20
Which describes the solution, r, to this equation?
A. The solution is 5, which represents the number of miles she runs each day.
B, The solution is 5, which represents the number of miles she runs each week.
c. The solution is 35, which represents the number of miles she runs each day.
D. The solution is 35, which represents the number of miles she runs each week.

Answers

D. The solution is 35, which represents the number of miles she runs each week.
D. The answer is D.


The two pentagons seen below are similar figures. What is the scale factor from the small pentagon on the left to the large
pentagon on the right? The pentagons are not drawn to scale

Answers

Scale factor is 4.3
4.3 divided by 1 is 4.3
25.8 divided by 6 is 4.3
12.9 divided by 3 is 4.3
The scale factor would be 4.3 i think

Plzzzz help meeeeeeeeeeeeeeeeeeeeeeeeeeee

Answers

Answer:

12×-20) mm

Step-by-step explanation:

because you times 12 and 20

Penny is making a model of a Ferris wheel that is 60 feet tall. The model is 15 inches tall. Penny is also
making a model of the sky needle ride that is 100 feet tall using the same scale. How tall is the model of
the sky needle?

Answers

The model of the sky needle will be 20 inches tall as the scale factor is 4.
Since the Ferris wheel model is in feet and inches, bring both measurements to inches, then divide the total height of the Ferris wheel by the height of the model, then you multiply the height of the sky needle ride by the quotient of the height of the Ferris wheel and the model of the Ferris wheel to get 7 inches

Pls help it is due today

Answers

Answer:

576

Step-by-step explanation:

4 feet^2 = 2 feet*2 feet = 24 inch * 24 inch. 24*24 = 576.

the answer is 567 because u have to know that a rectangle is to long to short

Determine if the table is proportional or non-proportional. If it is proportional, then what is the equation

g4.PN

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Answer:

The link doesnt work. there is no picture attached

Step-by-step explanation:

I'm really bad at math so ill be posting questions a lot-

Answers

Answer is 6/5. You keep 2/5, change into x, and flip 3/1

Jacob had some candy to give to his five children. He first took six pieces for himself and then evenly divided the rest among his children. Each child received three pieces. With how many pieces did he start?

Answers

Answer: 21
Explanation:5(3)+6=21

Answer:

21

Step-by-step explanation:

Because if each of his 5 children got 3, then there were 15 candies before he divided them. And to get before he took 6 candies for himself, add 6 to 15 to get 21

P.S. Jacob is greedy. He took a lot of candy

Grade 8 math - 15 points :)


Hopefully someone can draw the plot

Answers

Make a line plot and you got the answer

Answer:

we can't

Step-by-step explanation:

Pls help it is due today

Answers

Answer:

D. How many students enrolled in seventh grade at the start of this year

Answer:

The last one- How many students enrolled in seventh grade at the start of the year

Cover the edge length to an equivalent fraction.

Answers

Answer:

3/2

Step-by-step explanation:

Answer: 3/2

Step-by-step explanation:

2 × 1 = 2 + 1 = 3. that is where you get the 3 and you keep the denominator

hope that hepled :)

A shoe store donated a percent of every sale to hospitals. The total sales were ​$6,640 so they store donated ​$332. What percent of ​$6,640 was donated to hospitals​?

Answers

Answer:

$6308

Step-by-step explanation:

Well, 10% of 6640 is $664, and $332 is half of that, so 5%

!help asap!

Use the relationship between the angles in the figure to answer the question.


Which equation can be used to find the value of x?

Answers

37+53=90 so 180-90=90
x=90

x= 180-(37+53)
x= 90 ✅

Can I get a little help please I am having trouble

Answers

Answer:

45 because you have 90 -180 equals 90 divede that by 2 to get to 45

this is wrong look at the other guys

Step-by-step explanation:

Answer:

3x+90=180

3x=90

x=30

2x30

60

Step-by-step explanation:

The cost of a new television is $948. If the Value of the Television decreases by 4.5% every Year, Which function models the value of this television x years after it was purchased.
A: t(x) = 948(0.955)x^{x}
B:t(x) = 0.955(948)x^{x}
C: t(x) = 0.55(948)x^{x}
D: t(x) = 948(0.55)x^{x}
ty in advance I promise to the person with right answer!

Answers

Answer:

a

Step-by-step explanation:

The answer is A your welcome

Hayley has $155 in savings, and her brother Hank has $230. Hayley is saving $10 each week, and her brother is spending $15 each week. After how many weeks will their savings accounts have the same amount of money in them?

What is the best way to set up this word problem to solve?


15x+155=230+10x
15 x plus 155 is equal to 230 plus 10 x

155−15x=10x+230
155 minus 15 x is equal to 10 x plus 230

155+10x=230−15x
155 plus 10 x is equal to 230 minus 15 x

155−10x=230+15x

Please I need I will Brainliest!!!

Answers

Answer:

The Correct Answer is The 3rd one, Or C

Step-by-step explanation:

It will take 3 weeks

If its right mark me brainliest if its wrong report me.

Answer:

$155+$10x=$230-$15x

Step-by-step explanation:

weeks= x

$155+$10x=$230-$15x is the correct answer because hayley currently has $155 in her saving and you have to add the 10 dollars she saves each week which is 10x. On the other hand, her brother has $230 and spends $15 dollars every week so that is 15x.

The diameter of a wheel is 3 feet. What is the circumference? Use 3.14 for π.

Answers

Answer:

9.42

Step-by-step explanation:  all you had to do is 3x3.14

Answer:

2x3.14x1.5=9.42

Step-by-step explanation:

2pie r

Simplify the expression:
3k2+6k2–9k2+6k2

Answers

I believe that it is 6k^2!!!!
6k^2 is the simplified answer

please do part b A=5 and B=4

Answers

Answer:

you have the answer already

Step-by-step explanation:

Rectangle is 72

The square is 45

The length for A is 8

The length for B is 3

The student government wants to determine the theme for the eighth-grade dance. Which group would it be best to take a sample from?
student government
eighth-grade students
eighth-grade students in student government
middle school students

Answers

Eighth grade students because you want to give them the opinion and decide what THEY want

what is 5/8 + 2 /5 estimate

Answers

Answer:

Step-by-step explanation:

Answer:

= 1

Showing Work:

1/4 ≤ 5/8 ≤ 3/4 so round it to 1/2.

1/4 ≤ 2/5 ≤ 3/4 so round it to 1/2.

Estimating:

1/2 + 1/2 = 1

what do i type for this question? please help me.

Answers

The answer is X>50. Hope this helps!
The answer would be X>50 ! (:

What is the value of 9(4x - 4), when x=5?
Do all multiplication first, then solve the problem from left to right.

ILL GIVE BRAINLIET

Answers

I believe by asking you to do all multiplication first they are asking you to demonstrate the distributive property, this means we can distribute the 9 through the parenthesis by multiplying it by each part inside the parenthesis, this gives us:

36x - 36

now we can substitute 5 in for x to get:

36(5) -36

180-36

144

How would you write out "The quotient of a number decreased by 7 and -2 is -10"

Answers

Answer:

40

Step-by-step explanation:

The quotient of a number and six 7. n. + 4. Seven divided by a number, plus four. A number decreased by forty.

Pls help it is due today

Answers

50 students I believe

Answer:

50

Step-by-step explanation:

to find x u can bring 18 to the opposite side and divide

hope it helps

Fill in the blank with the correct number.

A number is divisible by _________ if the sum of its digits is divisibly by three.

A.) 2
B.) 3
C.) 9
D.) Both 3 and 9

Answers

Answer:D

Step-by-step explanation:

The correct Answer is D
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