Mathematics Middle School

Find the value of x and y

Answers

Answer 1

Answer:

x = 80, y = 122

Step-by-step explanation:

I got this equation by using vertical angles to create a complimentary angle pair (they sum to 90 degrees).

3/4x+2/5x-2=90°,

23/20x - 2=90°,

23/20x = 92°,

92/(23/20)

20/(1/4)

20(4)

= 80.

Since the angles are a linear pair on the left side(they sum to 180 degrees). Just subtract 180 from 3/4x-2 and substitute x into the expression.

180-(3/4(x)-2), 180-3/4(80)+2 = 120+2 = 122

Related Questions

|MATH| As always, DUE TODAY!!! Need help ASAP!!! WILL GIVE EVERYTHING GOOD!!!

Answers

Answer: 278 adults and 396 kids

Step-by-step explanation: I think

There were 294 children at the public pool and there were 400 adults at the public pool.

Given that, on a certain hot summer's day, 694 people used the public swimming pool.

What is a linear system of equations?

A system of linear equations consists of two or more equations made up of two or more variables such that all equations in the system are considered simultaneously. The solution to a system of linear equations in two variables is any ordered pair that satisfies each equation independently.

Let the number of children be x and the number of adult be y.

Now, x + y = 694 ---------(1)

and 1.75x+2.50y=1514.50 ---------(2)

From equation (1), x=694-y

Put x=694-y in equation (2), we get

1.75(694-y)+2.50y=1514.50

⇒ 1214.5-1.75y+2.50y=1514.50

⇒ -1.75y+2.50y=1514.50-1214.5

⇒ 0.75y=300

⇒ y=300/0.75

⇒ y=400

So, x + y = 694

x = 294

Therefore, there were 294 children at the public pool and there were 400 adults at the public pool.

To learn more about the linear system of an equations visit:

https://brainly.com/question/27664510.

#SPJ2

2, 3, 5, 9, 17, 22, 31, 39

Regina kept track of the points she scored during her team’s first eight basketball games. What is Regina’s mean score?
Responses
A 3939
B 1616
C 3737
D 1313
E 17

Answers

Answer:

Mean = 16

Step-by-step explanation:

MEAN can be find bg the sum of all score divided by the amount of the score.

Mean = total amount / number of amount

Total amount = 2 + 3 + 5 + 9 + 17+ 22 + 31 + 39

= 128

number of amount = 2, 3, 5, 9, 17, 22, 31, 39

= 8

Then we can calculate mean as

Mean = 128/8

Mean = 16

16
2+3+5+9+17+22+31+39=128
128/8=16

help and thank you its due in one hour

Answers

Answer: 2.269

Step-by-step explanation:

Answer:

i do belive that the answer is.....2.269 Hope that i answered in time Step-by-step explanation:

All that you have to do is subtract them

Help!!! Question on photo!!
A. $450
B. $900
C. $1,350
D. $1,575

Answers

Answer:

C. $1,350

Step-by-step explanation:

To find Maren's initial investment, look for the y-axis value when time = 0, because this is when the account was presumably opened.

The graph shows a reading between 1,200 and 1,500, so it can be presumed that the initial investment was aroundabout $1,350.

C. $1,350 because that’s where the graph starts

A company that makes hair-care products had 5,000 people try a new shampoo. Of the 5,000 people, 40 had a mild allergic reaction. What percent of the people had a mild allergic reaction?

Answers

Answer:

0.8% of the people had a mild allergic reaction.

What is the surface area of this cylinder?

Use ≈ 3.14 and round your answer to the nearest hundredth.

_____ square meters.

Help

Answers

Answer:

3504.24 square meters

Step-by-step explanation:

You want the surface area of a cylinder of radius 18 m and height 13 m.

Surface area

The surface area of a cylinder is given by the formula ...

A = 2πr(r +h)

A = 2(3.14)(18 m)(18 m +13 m) = 3504.24 m²

The surface area of the cylinder is about 3504.24 square meters.

<95141404393>

Is -12.161616... rational or not rational?

Answers

Answer:

NOT rational_ irrational

Step-by-step explanation:

Not because u have it in ur notes

-3 + 6x. Which expression shows the correct factorization?
Here are the ones to pick from
1. -2 + -2 +6 +x
2. 6(-2 +x)
3. 6(-2 +x)
4. -3 (1 - 2x)

Answers

Answer:

Option #4

Step-by-step explanation:

Expand option #4

=-3(1-2x)

=-3 -2x*-3

=-3+6x which is what your original equation was.

becoz it is a multiple choice, we can go by elimination, hence when we expand #4, we will get -3+6x

Find the area of the figure

Answers

Answer:

The answer is E

551.6ft²

Step-by-step explanation:

Area of shape =Area of rectangle +Area of circle

A=25×15+22/7×7.5²

A=375+176.8

A=551.7ft²

Answer is E 551.6ft^2

Explain how you can use multiplication to show that two fourths and four eighths are equivalent.

Answers

Answer:
You simplify (divide) 4/8 by 2 and you get 2/4
Similarly, 2/4 can still be simplified by 2, and you get 1/2.

I hope this helps.

50 POINTS PLS HELP AND BRAINLIEST

Answers

Answer:

Step-by-step explanation:

Quarters Pennies

B1: 6. + 5=11

B2: 6. + 5=11

B3: 6. + 5=11

B1+B2 = 22

B1+B2+B3 = 33

So no

i dont think this deserves brainliest

help me solve the problems, please! I will give the brainiest!

Answers

Answer:

1/5

1/3

Step-by-step explanation:

For the first problem:

5/7 of ... is 1/7

5/7 of x is equal to 1/7

(5/7)x = (1/7)

x = (1/7)/(5/7)

x = 1/5

For the second problem:

5/7 of ... is 5/21

5/7 of x is equal to 5/21

(5/7)x = (5/21)

x = (5/21)/(5/7)

x = 1/3

There now u can mark them brainiest lol x=1/3

The smallest value of n that makes all of the numbers in set natural numbers is ____.

Answers

The smallest of n that makes all of the numbers in set natural numbers is an element

An element

Step by step:

Generate an equivalent algebraic expression by combining like terms.

2x-6y+2x^2-21-4y+4x-x^2

Answers

I’m pretty sure it’s

6x-10y+x^2-21

Unless I read it wrong then sorry

I hate Ixl so much. but i need help

Answers

The slope intercept form is y = mx + b.

-m: slope --> (2)

-b: y-intercept --> (-3)

So, the answer is y = 2x - 3

Hope that helps!

Please Help!
Below are the data collected from two random samples of 500 American adults on the number of hours they work per day (rounded to the nearest hour):

Number of hours of work per day 6 7 8 9 10
Sample A: Number of adults 60 90 145 150 55
Sample B: Number of adults 70 80 140 145 65

Ryan concludes that adults spend a mean of 8 hours working each day. Malia thinks the mean is 9 hours. Who is correct—Ryan or Malia?

Make Sure You Do Tis Because I Will Report You If You Don't

Explain your answer in two or three sentences. Make sure to use facts to support your answer.

Answers

Answer:

8 or Ryan

Step-by-step explanation:

mean = sum of terms / number of terms so,

6+7+8+9+10/5=8

Yes in the just of it 87- 39 equals 18

Which graph represents a function?

Answers

The graph that does not show Y or X

HELPPPP PLZZZZ!!!!!!!!!!!

Answers

Answer:

1 hour=$9.30

5 hours=46.50

8 hours=$74.40

11 hours=$102.30

6 1/2 hours=$60.45

B)$20

Step-by-step explanation:

Multiply each hour by $9.30.

Divide $186 by $9.30

GIVING 30 POINTS HELP PLEASE

Question
Drag the correct symbol into the box to compare the expressions.

3(3+4) __ 3³

Answers

Answer:

3(3+4) < 3³

Step-by-step explanation:

You want to know the correct symbol that compares 3(3+4) to 3³.

Values

The left side evaluates to ...

3(3+4) = 3(7) = 21

The right side evaluates to ...

3³ = 3·3·3 = 27

Comparison

The appropriate comparison is ...

21 < 27

3(3+4) < 3³

<95141404393>

A textbook is 5/6 of an inch thick. If 18 textbooks will be stacked one on top of the other, how tall will the stack be?

Answers

Answer:

15.

Step-by-step explanation:

If explanation is needed please notify me!

show all the steps that you use to solve this problem.

Use the order of operations to find the value of the expression.

5×2+6−5

Answers

Answer:

Step-by-step explanation:

5 x 2 =10

10+6=16

16-1=15

step 1: 5 x 2 = 10
step 2: 6 - 5 = 1
step 3: 10 + 1 = 11

Help im in study island

Answers

the answer is x=20 aka c

C. The answer to your question is X=20 or C

how do i solve this please tell me word for word showing your work please

Answers

Here is the answer on the paper

6+n= 0 is the answer i think

Tomas collects miniature cars. He bought a display case at a cost of $5.95. He also bought 3 miniature cars. If his total cost was $11.05, how much did each car cost?

Answers

Answer:

Step-by-step explanation:

The answer should be D

A submarine hovers at 66 and two-thirds yards below sea level. If it ascends 24 and StartFraction 1 over 8 EndFraction yards and then descends 78 and three-fourths yards, what is the submarine’s new position, in yards, with respect to sea level?

Answers

-2911/24 = -121 7/24
The correct answer is -121 7/24

Give him brainlest he deserves it honestly

And like did you know we’re on a moving rock going through endless space

Find the surface area of the triangular prism (above) using its net (below).

Answers

This is quite simple, first, you must find the area of each shape, since the form of the prism is currently 2D.

Formula for (Area of Rectangle)= length x width

Formula for (Area of Triangle)= 1/2 base x height

Now, we have the formulas. Let’s get started!

(Identification) There are 3 rectangles and 2 triangles. 2 rectangles are of the same size and 2 triangles are of the same size.

Triangles~ the base is 6 and the height is 4.

1/2 (6 x 4) = 12

However, there’s two triangles. (of the same size)

12 x 2 = 24

Rectangles 1 and 2~ the length is 5 and the width is 7

5 x 7 = 35

However, there’s two rectangles. (of the same size)

35 x 2 = 70

Rectangle 3~ the length is 6 and the width is 7

6 x 7 = 42

There’s only one of these.

Now we add all the areas of the shapes together!

24 + 70 + 42 = 136

The surface area is 136.

An equation is shown below:

3(2x - 7) = 3

Part A: How many solutions does this equation have?

Part B: What are the solutions to this equation? Show your work.

Answers

A: 1
B: 3(2x-7)=3, 6x-21=3, 6x=24, x=4

Step-by-step explanation:

He is right above

A restaurant chef wants to install a new floor in her kitchen. The kitchen measures 8 yards wide and 12 yards long, and the flooring costs $2.00 per square yard. How much will the chef's new floor cost?

Answers

Answer:

The answer is the chef's new floor will cost 40 dollars

Step-by-step explanation:

1. 8 yards and then 2 dollars so do 8x2=16

2. Then do 12 yards then 2 dollars so do 12x2=24

3. Then add up 16+24=40

Helppppp
what are the answers

Answers

Answer:

A. 24 lap/hour.

B. r = 24h

1. 24 lap/hour 2. r=24h

Please give effort on this

Answers

Answer:

1) 10

2) 9

Step-by-step explanation:

I Just had this one!

Answer:

1. 10

2. 9

Step-by-step explanation:

I hope this helps

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