Mathematics Middle School

Solve for x in the diagram
A. 37
B. 14
C. 25
D. 15

Answers

Answer 1

Answer:

Step-by-step explanation:

Pythagorean Theorem:

12^2+9^2=x^2

144+81=x^2

x=15

Answer 2

Answer:

Step-by-step explanation:

Using the Pythagorean theorem, or knowing that pythagorean triangles are can be scaled up/down, we know that this triangle is similar to the "3 4 5 egyptian triangle" Therefore x would be 15, as the sides are 3x the sides of the 345 triangle. we can prove this with sqrt(81 + 144) = sqrt(225) = 15

Related Questions

there are 20 houses on Rainbow Street. 45% of the houses have holiday decorations in their yard. How many houses have decorations? (SHOW YOUR WORK!)

Answers

Answer:

Step-by-step explanation:

it’s basically 45% of 20.

since 45 is a percentage, u divide by 100. so it’ll be

45/100 * 20

you’ll get .45*20 which equals 9.
so about 9 houses shouldve been decorated

[WILL MARK BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!]
The state of colorado is 4 cm long and 3 cm wide on a map. A cartographer wants to use a scale factor of 2.5 to enlarge the map. What is the area of the enlarged map?
A:12 square cm
B:30 square cm
C:35 square cm
D:75 square cm

Answers

Answer:

D. 75 cm²

Step-by-step explanation:

We are asked to find the area of a scaled map.

What is a Scale Factor?

A scale factor is a change in the size, or ratio of a shape, or object.

The value of the scale factor represents how much larger the shape or object will become.

First, let's identify what is given to us.

Given:

The map of Colorado is 4 cm long and 3 cm wide.We have to enlarge the map with a scale factor of 2.5.

We should begin by enlarging the map with the given scale factor. In order to find the dimensions of the scaled map, we should multiply the given dimensions of the original map by the scale factor.

Multiply:

$4 \times 2.5 = 10 \ cm$

$3 \times 2.5 = 7.5 \ cm$

Next, we should find the area of the scaled map by multiply the dimensions together.

$A = L \times W$

Multiply:

$A = 10 \times 7.5$

$A = 75 \ cm^{2}$

The area of the scaled map is D. 75 cm².

PLEASE ANSWER ASAP
A study was conducted comparing the speeds of 2 different fish, Fish A and Fish B. The table shows the distance, in meters, Fish A travels in seconds. Scientists
concluded that Fish B travels 3 meters every 2 seconds.

Assuming both fish swim at a constant rate, which fish swims faster and by how many meters per second?

Answers

Fish a is faster is the faster fish by 0.1 meter every second

What is the value of the expression 5^2 + 2^2?

20points! Please help! <3

Answers

Answer:

7^2

Step-by-step explanation:

You can add numbers if they have the same exponent

the answer is 29!!

explanation: 5^2 = 5x5 which is 25
and 2^2 is 2x2 which is 4. add those and it’s 29! :)

Giving away 60 points, answer quick!!

What is the exact circumference of the circle?
Responses

10π ft

20π ft

40π ft

60π ft

Answers

Answer:

40π ft. is the circumference of the circle.

Step-by-step explanation:

1. Multiply the area by two (2). That is your answer.

Hope this works out for you!! :)

multiple area by 2 is all you gotta do so you get 40(symbol)

ILL GIVE BRAINLIEST !!
Simplify the expression: 48% of 2500 – {(73 × 8) /√196} – 15% of (80/3)
2500 का 48% – {(73 × 8) /√196} – (80/3) का 15%
(86/21.5)^2 + {36/(√9×2)}^2
(86/21.5)^2 + {36/(√9×2)}^2
TYVM :)

Answers

48% of 2500 - (73×8/√196) - 15% of 80/3

$ \sf\frac{48}{100} \times 2500 - ( \frac{73 \times 8}{ \sqrt{196} } ) - \frac{15}{100} \times \frac{80}{3} $

$ \sf\frac{48}{1 \cancel{00}} \times 25 \cancel{00} - ( \frac{73 \times \cancel8}{ \cancel{14}} ) - \frac{ \cancel{15}}{ \cancel{100}} \times \frac{ \cancel{80}}{ \cancel{3}} $

$ \sf1200 - \frac{73 \times 4}{7} - 4$

$ \sf1200 - \frac{292}{7} - 4$

$ \sf1196 - \frac{292}{7} $

$ \boxed{ \tt \: \frac{8080}{7} \approx \: 1154.28}$

Answer: 1154.286

Step-by-step explanation:

Khalid and Jesse took different overnight trains.
The graph shows the relationship between the total distance Khalid traveled and the time in hours.
The distance Jesse traveled after x hours is given by the equation y = 150x. Who, if anyone, traveled at a faster speed?

Khalid’s rate is (120, 140, 150 or 280) miles per hour.
Jesses rate is (120, 140, 150 or 280) miles per hour.
So (Jesse, Khalid or Neither)'s train traveled at a faster speed.

Answers

I think that neither train were faster

Write each expression without the absolute value symbol. |7-(12-x)|

Answers

The expression without the absolute value symbol is given as follows:

If x > 5, then |7 - (12 - x)| = -5 + x.If x = 5, then |7 - (12 - x)| = -5 + x.If x < 5, then |7 - (12 - x)| = 5 - x.

What is the absolute value function?

The absolute value function is defined by the following piecewise rule, depending on the input of the function:

|f(x)| = f(x), x ≥ 0.|f(x)| = -f(x), x < 0.

The expression for this problem is given as follows:

7 - (12 - x).

The critical value of x is obtained as follows:

7 - (12 - x) = 0

7 - 12 + x = 0

x = 5.

Hence the expression is given as follows:

If x > 5, then |7 - (12 - x)| = -5 + x.If x = 5, then |7 - (12 - x)| = -5 + x.If x < 5, then |7 - (12 - x)| = 5 - x.

More can be learned about the absolute value function at https://brainly.com/question/3381225

#SPJ1

Solve the system using elimination and find the y and x coordinates

Answers

Answer:(-1,1)

Step-by-step explanation:

Answer:

Your answer is: (2,-1). I provided a picture in case you need to show your work.

pls help what is 3 3/10 divided by 1 4/7
I will give brig brain thing

Answers

Answer:

2.1

Step-by-step explanation:

Answer: 21/10, or 2.1 is your answer

Step-by-step explanation:

HELP HELP HEEEEEEEEEELP!

There are 5 cockroaches crawling on each square meter of the front of this building. How many cockroaches are crawling on the front of the building?
Please show your work and explain. Thanks!!!

Answers

Answer:

^60 or id know

Step-by-step explanation:

Answer:

I might or might not be right but i think the answer is ^60.

I hope this helped u .

Step-by-step explanation:

The circumference of a circular park is approximately 18 feet. What is the approximate area inside the circular park?

Answers

Answer:

25.685 square feet.

Step-by-step explanation:

Circumference = 2 * π * radius

From this, we can derive the formula for the radius:

radius = Circumference / (2 * π)

Let's substitute the value of the circumference and calculate the approximate radius:

radius = 18 / (2 * π)

radius ≈ 18 / (2 * 3.14159)

radius ≈ 2.865 feet

Now that we have the approximate radius, we can calculate the area:

Area ≈ π * radius²

Area ≈ 3.14159 * (2.865)²

Area ≈ 3.14159 * 8.193225

Area ≈ 25.685 square feet

Therefore, the approximate area inside the circular park is approximately 25.685 square feet.

We know that the circumference of a circle is given by:

C = 2πr

where C is the circumference and r is the radius of the circle.

In this case, we are given that the circumference is approximately 18 feet, so we can set up the following equation:

18 = 2πr

Solving for r, we get:

r = 9/π ≈ 2.864 feet

Now we can use the formula for the area of a circle:

A = πr^2

Substituting the value we found for r, we get:

A = π(2.864 ft)^2 ≈ 25.85 ft^2

Therefore, the approximate area inside the circular park is approximately 25.85 square feet.

please help!
I have part 1 done I just need help with part 2 and 3
Part 1
You will need to measure five different people. Record your measurements on a piece of paper. Using a tape measure or ruler, measure the length (in inches) of a person’s left foot and then measure the length (in inches) of that same person’s forearm (between their wrist and elbow). Refer to the diagrams below. You will have two measurements for each person.

(An easy way to measure the length of a foot is to have your subject stand on a piece of paper. Then, trace their foot and measure the outline once they move off the paper.)

To measure the forearm, measure inside the arm, between the wrist and the elbow.

forearm(in) foot (in)
8 10
11 12
14 14
15 16
15 17

Part 2

Organize your data and find the rate of change.

Create a table of the measurements for your data. Label the forearm measurements as your input and the foot measurements as your output.

Select two sets of points and find the rate of change for your data.

Describe your results. If you had to express this relation as a verbal statement, how would you describe it?
Part 3

Compare rates of change.

The equation below can be used to find the length of a foot or forearm when you know one or the other.

(length of the foot) = 0.860 • (length of the forearm) + 3.302

If you let y = length of the foot and x = length of the forearm, this equation can be simplified to
y = 0.860x + 3.302.

Using this equation, how long would the foot of a person be if his forearm was 17 inches long?

What is the rate of change of the equation from Part A?

Compare the equation from Part A to your data. Are they the same? Which has a greater rate of change? Why do you think the values are different?

Is the relation in your data a function? Why or why not? Could the equation in Part A represent a function? Why or why not? Explain your answer.
For this option you will submit the details from all three parts. Submit your measurements, the table, and description that you created in Parts 1 and 2. Submit your answers to the questions from Part 3.

Answers

Answer: You'll be able to do this!

Step-by-step explanation:

I will be so proud of you if you complete it

An investor has an account with stock from two different companies. Last year, his stock in Company A was worth $3800 and his stock in Company B was worth $3400. The stock in Company A has decreased 22% since last year and the stock in Company B has decreased 12%. What was the total percentage decrease in the investor's stock account? Round your answer to the nearest tenth (if necessary).

Answers

Answer: The total percentage decrease in the investor's stock account is 34%

Step-by-step explanation:

The investor's stock in Company A= $3800

The investor's stock in Company B= $3400

Percentage decline in stock of company A= 22%

Decline in value of stock of company A= 3800× 22/100

= 38×22

= $836

Percentage decline in stock of company B= 3400×12/100

= 34×12

=$408

Total decline in wealth of investor= 836+ 408

= $1244

Total percentage decline in wealth= 1244×100/7200

= 124400/7200

= 17.27%

The percentage decrease in investor's stock is 17.27%

For more information about Percentage:

brainly.com/question/18941982

Whoever gets this right gets 40 points!

Answers

First photo I’m pretty sure is 81 degrees and second photo I think is 27 because of vertical angles

First photo I'm pretty sure is 81 degrees and second photo I think is 27 because of vertical angles

help me i gave up :(

Answers

For this equation the easiest thing to start with ratios:

16:4 (scale of 4 due to 4 x 4 being = to 16)

For the y-2 to find y you first will put 8/4 (your scaling back), so 2 so 4-2 would be 2 which makes that equal to y.

Knowing that 8 is the size on the one side these are equal on the top so x-3 had to equal 8, so 11-3=8 so...

x=11

y=2

16:4
4x4=16
y-2
8/4
4-2
2=y
x =11
y=2

pls help me with this i have been trying to figure it out

Answers

Answer: The perimeter of crater lake is 17.27 miles.

Step-by-step explanation:

The shape of the lake is like a circle

The diameter of lake = d = 5.5 miles

∵ shape pf lake is circle, so the diameter of circle = d = 5.5 miles

Let The perimeter of crater lake = p miles

Now, As we know

The perimeter of circle = \pi × diameter

the value of \pi = 3.14

Or, p = pi × d

Or, p = pi × 5.5 miles

Or, p = 3.14 × 5.5 miles

∴ p = 17.27 miles

So, The perimeter of circle = perimeter of lake = p = 17.27 miles

Hence, The perimeter of the crater lake is 17.27 miles.

It was my cousin's idea

The cacluation of pi is 3.14

Answer:5.5$\pi$

Step-by-step explanation:

Enter your answer and show all the steps that you use to solve this problem in the space provided.

Convert the map scale to a unit rate. How many inches represent one mile? Show your work. Interpret the meaning of the unit rate.

Enter your answer and show all the steps that you use to solve this problem in the space provided.

Convert the map scale to a unit rate. How many inches represent one mile? Show your work. Interpret the meaning of the unit rate.

3
10
in
.
=
7
8
mi
.
.

Answers

Answer:

Step by step explanation:

You have a pizza with diameter 12
2
3 in., and a square box that is 12.65 in. across. Write 12
2
3 as a decimal. Can you fit the pizza inside the box?
What is the decimal expansion for 12
2
3?
A.12.6
B.12.65
C.12.6
D.12.66
pls help me

Answers

Answer:

D is the right choice and no you cannot fit the pizza inside the box.

Step-by-step explanation:

D is the answer because to turn 2/3 into a decimal you would divide 2 by 3 and the answer you would get would be 0.66666666666...You would then add 12 to the answer and get 12.6666... Once you get this answer you would round it to the hundredths to get 12.67 but since that is not an option you could use D, 12.66 inches.

Answer:

I believe the answer is D.

Step-by-step explanation:

GOOGLE

Kala needs to buy some pencils. Brand A has a pack of 28

pencils for $4.19

. Brand B has a pack of 72

pencils for $9.12

.Find the unit price for each brand. Then state which brand is the better buy based on the unit price.

Round your answers to the nearest cent.

Answers

Answer: The brand should would want to pick is brand A.

Step-by-step explanation: Okay, first you divide 28 by $4.19. Then, divide brand B (72 divided by $9.12). Brand A- 6.68 | Brand B- 7.89.

Brand A: 0.14$ for 1 pencil
Brand B: 0.12$ for 1 pencil

Brand B is the better buy because it costs less per one pencil.

Question
Milo and Noah are visiting the new play area at the park. It is rectangular in shape. Milo says he knows that it has a perimeter of 44 yards. Noah says he knows that it has a width of 21 feet.

What is the length of the play area in feet?

Answers

The length of the play area is 45 feet.

Explanation:

Perimeter: 44 yards in feet is 132
Width: 21 feet
132-42= 90/2=45

The length of one side of the play area in feet is 45ft.

Someone help me with this ASAP!

Answers

Answer:

48.1 somewhere around 36 and 57

Step-by-step explanation:

Answer:

36-57

Step-by-step explanation:

18.50 x 2.6 = 48.10, which is between those two numbers

Help lol i need help with this its due at 9:00 pm

Answers

Answer:

Send the rest of the question! Lol! I need the rest of the numbers and parts to help!

Step-by-step explanation:

Last Week, Angus studied for 6 1/3 hours. This week. he plans to study 1/2 as much as he studied last week. How many hours does Angus plan to study this week?

Answers

Answer:

3 1/6

Step-by-step explanation: I multiplied 6 1/3 and 1/2 together and I got 19/6

19/6 is an improper fraction so you would divide 19 divided by 6 would give you 3 1/6!

it would be 3 1/6 cause i solved it and got that

Find the perimeter of this shape.

Answers

Answer:

draw a line that makes a triangle and rectangle.

hypotenuse= 30

3k-4k-5k triangle

18-24-30

so the short part of triangle is 18 cm

10+10+18+24+30 equals 92

sorry for language I am not familiar with English

the perimeter of this shape is

24+10+10+30+$\sqrt{30^{2} -24^{2} }$ = 92 cm

can anybody helppp?????????

Answers

Answer:

Missing angle = 50°

Step-by-step explanation:

Given angles,

→ <A = 40°

→ <B = 90°

→ <C = ?

Now we have to,

→ Find the missing angle of triangle.

We know that,

→ Sum of angles of a triangle is 180°.

Formula we use,

→ <A + <B + <C = 180°

Let us assume that,

→ Missing angle = c

Forming the equation,

→ 40° + 90° + c = 180°

Then the value of c will be,

→ 40° + 90° + c = 180°

→ 130° + c = 180°

→ c = 180° - 130°

→ [ c = 50° ]

Hence, the value of c is 50°.

50 degrees because a triangle is 180 hence if you have 40 degrees and the right side which is 90 degrees, you have 180 - 130 which equals c = 50

PLEASE HELP

mathmatics

Answers

Answer: $38.10

Step-by-step explanation: This is the only reasonable solution that is not in the negatives, and if you do the math that's the answer.

38.10 if you if you do 47.90 + 80 you get this and it isnt in the negatives

simplify each expression.

3. 7^-2(-3)2 4. a^-3/b^-2 for a= 5 and b= 6

please answer this im bad at math

Answers

Answer:

Hope This helps!^^

Step-by-step explanation:

7^-2(-3) =-3/49

a^-3b/b^-2

b^2/a^3

6^2/5^3

36/125 OR 0.288

Answer:

This helps! ^^

Step-by-step explanation:

7^-2(-3) =-3/49

a^-3b/b^-2

b^2/a^3

6^2/5^3

36/125 OR 0.288

Step-by-step explanation:

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

Which data set could represent the scores shown in the histogram?

Answers

Answer:

Step-by-step explanation:

B, because judging the graph it looks like the numbers are the closest to the data shown.

It is C because each score you count is matching with the histogram. You just count how many are in the 60-70 and match it to the graph.

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Solve for x in the diagram A. 37 B. 14 C. 25 D. 15

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Solve for x in the diagram
A. 37
B. 14
C. 25
D. 15