Mathematics Middle School

PLEADE HELP ILL GIVE BRAINLIST QUESTION IN PHOTO

Answers

Answer 1

Answer:

x = 3

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

120° is an exterior angle of the triangle , then

15x + 5 + 22x + 4 = 120

37x + 9 = 120 ( subtract 9 from both sides )

37x = 111 ( divide both sides by 37 )

x = 3

Related Questions

is the expression 3^2/3^3 equivalent to 3^3/3^2

explain.

Answers

Answer:

No, the two expressions are not equivalent.

Step-by-step explanation:

3²÷3³ = 9÷27 = 1/3

3³÷3² = 27÷9 = 3

Sry but im just answering this bc i needa ask a question

How many cubes with side lengths of 1/2 does it take to fill the prism?

Answers

Answer: 24 cubes

Step-by-step explanation:

PLEASE EXPLAIN THIS IM SO CONFUSED (dont send links)
_____________________________________________________
Lyn played a trivia game. She answered 6 questions and received the following scores: 200, -400, 100, -600, 700, and 200. What was Lyn's score?

Answers

200 was her score. you are just adding all the numbers, including the negatives

Answer: Her end score would be 200 points.

Step-by-step explanation:

Add everything together like so, 200+-400+100+-600+700+200 and that equals 200

b. Write an equation that shows the relationship 64% of
y is 40.

c. 45 of x is 72 find the value if x

Answers

[tex]0.65 \times y = 40 \\ y = \frac{40}{0.65} [/tex]

[tex].45 \times x = 72 \\ x = \frac{72}{.45} \\ x = 160 \\ 45 \: percent \: of \: 160 \: is \: 72[/tex]

Mr. Chang buys supplies for the school store. He bought 300 pencils on sale for $10. During the first three months of school, he sold 200 pencils and made $50. The other pencils were thrown away because they were broken. How much profit did Mr. Chang make on the pencils?

Answers

Answer:

$40

Step-by-step explanation:

He bought the pencils for $10, so his expense was $10. He sold the pencils for $50, and $50 - $10 is $40, and that's the total amount of money he made.

$40 .................………

HHELPPPPP another math up thing #2
_________________________________

1. Estimate each amount. Show or explain how you estimated one of the amounts.

a) 3/8 of 3/4

b) 7 1/0 of 8 1/2

c) 5/2 of 5/2

2. Calculate each amount.

a) 4/5 × 3 1/5

b) 4 2/3 × 3 2/5

c) 9/4 × 6/5

3. a) Explain why this is true:
3 1/4 × 2 2/3 > 6.

b) Explain why 3 1/4 × 2 2/3 is the area of a rectangle
3 1/4 units × 2 2/3 units.

(: plllllz help!! ill give u brainlist, thank you,5 stars,+ u get the points!! :D

Answers

Answer:

wwx

Step-by-step explanation:

USE THE SQUARE ROOT PROPERTY!!!!!

the sides of a square are reduced by 2 inches. the new area is 20 square inches. Set up and solve an equation to find the original length of the square

Answers

Answer:

Step-by-step explanation:

x = original length of one side

(x-2)² = 20 inches²

x-2 = ±√20 = ±2√5

x = 2±2√5

2-2√5 is an extraneous solution,

so x = 2±2√5 ≈ 6.47 inches

A box of Capri Sun costs $2.49. How much do a dozen boxes of Capri Sun cost? To solve this real world problem, the first thing you need to know is a dozen equals Next you need to 2.49 and to find out that a dozen boxes of Capri Sun will cost .

Answers

Answer:

$29.88

Step-by-step explanation:

Answer:

29.88

Step-by-step explanation:

You have to multiply 2.49*12=29.88

A dozen is equivalent to 12

Ill give brainliest
Principal 10,000
Rate %3
How many years until the interest reaches $12,700
Answer choices:
A. 7 years B. 12 years
C. 9 years D. 22 years

Answers

The answer is C

10,000 x .03 x 9 = 2700

10,000 + 2700 = 12,700

Can someone help me figure this out if its blurry i'll try to write the whole thing out for you guys so plss answer this question

Answers

Answer:

Part 2) 5 hr

Part 3) $80 and $160

Step-by-step explanation:

Part 2) Equate the two pay equations: 20H = 10H + 50

Subtract 10H from both sides: 10H = 50

Then H = 5.

After 5 hours, each would have earned the same amount.

Part 3) In an 8-hour day, one guy would earn ($20/hr)(8 hr) = $160, and the other guy would earn ($10/hr)(8 hr) = $80.

Answer:

2. 5 hours

3. $80 and $160

May someone please help me, please? This is about exponents by the way. About 5 questions I need help with.

Answers

Answer:

16=16^1

1/4=(1/2)^2

25= 5^2

49=7^2

16=4^2

Step-by-step explanation:

PLS

Evaluate 8.3x + 7.9y when x=6 and y=7 .

Answers

Answer:

105.1

Step-by-step explanation:

you have to substitute the values in and then u add to get the answer

hope this helps :D

Answer:

105.1

Step-by-step explanation:

Rewrite 8.3x + 7.9y with the indicated substitutions:

8.3(6) + 7.9(7), or

49.8 + 55.3, or

105.1

help mee this is confusing I don't know what to do

Answers

Answer: this is telling you how many group or people there are for example in gruop b there is 2 out of 5

Step-by-step explanation:

There’s 2 outttttttt of 5

HELP PLEASE ASAP!!!!

Answers

Answer:

D and A

Step-by-step explanation:

A and d , I had the same question

The question about triangles is below.

The answer choices are:
A. 30°
B. 40°
C. 75°
D. 85°

Answers

Answer:

Step-by-step explanation:

Answer: Hes wrong its 40

Step-by-step explanation:picking 30 made me get an 80

What is the difference between a sample and a population?
a. Populations only consider a portion of the sample being studied. This answer is incorrect.
b. Samples are generally much larger than populations.
c. Populations do not always represent the entire group of people in question.
d. Samples only consider a portion of the population being studied.

Answers

It’s answer D!!!!!!!!!!!

In 10^3(exponent), 10 is the base, and 3 is the exponent. That means 10 will appear as a factor 3 times: 10 · 10 · 10. 10^3(exponent) = 1000.

In 2^7, how many times will 2 appear as a factor?

A
2

B
14

C
7

D
9

Answers

C. 7 2^7 makes 2 appear 7 times

I think b I’m not sure

Which is an example of a statistical question?

Questions
Question 1 What percent did Matti score on his English test?
Question 2 What letter grade did each person score on their English test?
Question 3 Who scored the best on their English test?
Question 4 Who scored the worst on their English test?
A. question 1
B. question 2
C. question 3
D. question 4

Answers

Answer:

I think it is question 2, B

Answer:

question 2! or option B)

Step-by-step explanation:

Statistics are data that involves more then one person.

please consider marking me as brainliest! Have an amazing day lovely!

A recipe for maroon paint says, “Mix 5 ml of red paint with 3 ml of blue paint.” Use snap cubes to represent the amounts of red and blue paint in the recipe. Then, draw a sketch of your snap-cube representation of the maroon paint. Your teacher will provide directions on how to use the snap-cubes. What amount does each cube represent? How many milliliters of maroon paint will there be?

Answers

Answer:

8 ml

Step-by-step explanation:

Each cube equals 1ml add them up dude...

Ella and Jake love to skateboard. They created a frame for the ramp and then covered it with wood.

How much wood did it take to cover the ramp, including the bottom?
Give an exact answer (do not round).

Answers

Answer:

triangle side = 0.54

so both triangle sides = 1.08

and then the sides (1.5 * 3.5) * 2 = 10.5

the last side = 0.9 * 3.5 = 3.15

so add it all 3.15 + 10.5 + 1.08

total area = 14.73 m^2

Il pretty sure it’s 15.73 m^2

Please help me out
ill brainliest u

Answers

Answer:

1) x-3=0

4) 6=2x

6) x²=9

Step-by-step explanation:

x-3=0

x=3

----

1+x = 2

x = 2-1

x = 1

----

9-x=3

9-3=x

6=x

----

6=2x

6/2=x

3=x

----

x/5=3

x=3*5

x=15

----

x²=9

x=±3

These are the value of x solved for each equations. If you have any questions, feel free to ask.

Answer:

1. yes

2. no

3. no

4. yes

5. no

6. yes

Step-by-step explanation:

PLEASE HELP FAST! What is the area of a circle with a diameter of 10 cm?

Answers

Answer:

i think A

Step-by-step explanation:

Answer:

c is the answer :)

Step-by-step explanation:

A rectangle has a length of 8 feet and a width of 3 feet. If a right triangle has a height of 3 feet, what length would its base be if it has the same area as the rectangle?

Answers

16 - A triangle is length x height x 1/2

^ what they said:)
Have a great day!!!!!

Mackey invested some money in an account paying 6% interest for one year. She invested $1000 more than this amount in an account paying 8.5%. How much did she invest in total if the total interest earned in the year was $737.50?

Answers

Step-by-step explanation:

Let's assume the amount Mackey initially invested in the 6% account is x dollars.

According to the given information, Mackey invested $1000 more than x in the 8.5% account, which means she invested (x + $1000) dollars in that account.

The total interest earned from the 6% account would be 0.06x dollars, and the total interest earned from the 8.5% account would be 0.085(x + $1000) dollars.

The total interest earned in the year is given as $737.50, so we can set up the equation:

0.06x + 0.085(x + $1000) = $737.50

Simplifying the equation:

0.06x + 0.085x + 0.085($1000) = $737.50

Combining like terms:

0.145x + $85 = $737.50

Subtracting $85 from both sides:

0.145x = $737.50 - $85

0.145x = $652.50

Dividing both sides by 0.145:

x = $652.50 / 0.145

x ≈ $4500

Therefore, Mackey initially invested approximately $4500 in the 6% account, and she invested $1000 more, which means she invested a total of $5500.

$4500

A help me outtt rq i dont know

Answers

The answer is 125. That is because thats the Answer.

someone please help me

Answers

Answer:

n/2 = 9

Step by Step:

n/2 = 9

n/2 * 2 = 9 * 2

n = 9* 2

n = 18

Don't guess!
I will mark brainliest if its correct!
Don't answer if you don't know!
Also no links!
And show your work plz!

Answers

Answer:

Step-by-step explanation:

3:2 IS EQUAL TO 3/2

At a dinner, a meal costs $22 and a sales tax of $1.87 was added to the bill.
1. How much would the sales tax be on a $66 meal?
2. What is the sales tax rate in this city?

Answers

Answer:

$8.50, the rate is 9.65%

Step-by-step explanation:

The rate is 8.50 and 9.95%.

Can someone please help me find the sum of each interior angle measure of the polygon, and can you please explain. I need help on both of these questions.

Answers

Answer:

i dont know, just need some points

Step-by-step explanation:

MATH SMARTIES I WILL GIVE BRAINLIEST PLEASE HELP AND PLEASE GIVE AN EXPLANATION!!!!!!!!!!!!!!

Answers

Answer:

30 books on the shelf are Fiction.

Step-by-step explanation:

Hey!

There are 50 books on a shelf.

1/5 of the books are Science Fiction.3/10 are Non-Fiction.The Rest are Fiction.

how many books on the shelf are Fiction?

==================================================================

MAKE AN EQUATION!

We know that there are three Categories: Fiction, Science Fiction, and Non Fiction.

Total- 50

⇒ 50 =

1/5 of 50 are SF

⇒ 50 = (1/5)(50)

3/10 of 50 are NF

⇒ 50 = (1/5)(50) + (3/10)(50) + x

--------------------------------------------------------------------------------------------------------------

SOLVE THE EQUATION!

(1/5)(50) + (3/10)(50) + x = 50

To Isolate X-

-Multiply and remove the parentheses..

⇒ 50/10 + 150/10 + x = 50

-Simplify.

⇒ 5 + 15 + x = 50

-Add Like Terms

⇒ 20 + x = 50

-Subtract 20 from both sides.

⇒ 20 + x - 20 = 50 - 20

-Simplify Right Hand Side.

⇒ x = 30

--------------------------------------------------------------------------------------------------------------

So, 30 books on the shelf are Fiction.

==================================================================

Hope I Helped, Feel free to ask any questions to clarify :)

Have a great day!

More Love, More Peace, Less Hate.

-Aadi x

Other Questions

show that f has exactly two roots. if these roots occur at x = and x = , show that 1.21 < < 1.22 and 5.87 < < 5.88. clearly state the result(s) you are using here Provide an equation for the acid-catalyzed condensation of ethanoic (acetic) acid and 3- methylbutanol (isopentyl alcohol). Please use proper condensed structural formulas. Compare this product with the ester that you would isolate from the esterification of 4-methylpentanoic acid with methanol. Provide an equation for this reaction as well. Are these products isomers and if so what type of isomer are they? Travelers arrive at the main entrance door of an airline terminal according to an exponential inter-arrival-time distribution with mean 1.6 minutes. The travel time from the entrance to the check-in is distributed uniformly between 2 and 3 minutes. At the check-in counter, travelers wait is a single line until one of five agents is available to serve them. The check-in time (in minutes) follows a Weibull distribution with parameters beta = 7.76 and alpha = 3.91. Upon completion of their check-in, they are free to travel to their gates. Create a simulation model, with animation, of this system. Run the simulation for 16 hours to determine the average time in system, number of passengers completing check-in, and the average length of the check-in queue. A stock has an expected return of 12.0 percent, its beta is 1.68, and the risk-free rate is 2.8 percent. What must the expected return on the market be? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.) 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It has determined that 75% of the issues sold each month are subscriptions and the other 25% are sold at newsstands. It has also determined that the ages of its subscribers are normally distributed with a mean of 44.5 and a standard deviation 7.42 years, whereas the ages of its newsstand customers are normally distributed with of 36.1 and a standard deviation of 8.20 years. 1) Mogul would like to make the following statement to its advertisers: "80% of our subscribers are between the age of ...... and ....... Your job is to fill in the blanks choosing a range that is symmetric around the means. (In other words, the mean age of subscribers should be the midpoint of the range.) 2) What proportion of Mogul's newsstand customers have ages in the range you gave in 1)? one physics professor talking produces a sound intensity level of 55 dbdb . 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What is the probability that the first three children chosen are boys? How many ways are there to choose 3 students? Choose the correct answer below. O A. 17.16.15 B. 35.34.33 OC. 18.17.16 D. 3.18 E. 35.18. 17 There are ways to choose 3 students. (Type a whole number) How many ways can the first three children chosen be boys? Choose the correct answer below. A. 35. 34.33 B.3.18 C. 35.18. 17 D. 18.17.16 O E. 17.16.15 There are ways to choose the first three children as boys. (Type a whole number.) The probability that the first three children chosen are boys is (Round to four decimal places as needed.) A sled plus passenger with total mass 50 kg is pulled 20 m across the snow at constant velocity by a force directed 25 above the horizontal. Calculate (a) the work of the applied force, (b) the work of friction, and (c) the total work. A compound is found to contain 9. 227 % boron and 90. 77 % chlorine by mass. What is the empirical formula for this compound? For the following regression model Y = + X + u-When we use the natural logarithm of Y and X instead, how should we interpret the value of ? If the relationship between Y and X is not linear, how can we apply a classical linear regression model to describe their relationship? A Company Purchases A Piece Of New Equipment. Explain The Impact Of The Purchase On The Income Statement, Balance Sheet, And Statement Of Cash Flows. A single input sensor in a finite state machine, allows the user to control: a. multiple output devices b. only one output device c. Only one input device d. all of the above