Mathematics Middle School

if side a=22.3 and angle b=47 ,find c.
A.24.6
B.25.1
C.31.5
D. 32.9

Answers

Answer 1

Answer:

D. 32.9

Step-by-step explanation:

Related Questions

If there are 14 people sitting evenly spaced around a circle which person is directly across from the 2nd person?

Answers

Answer:

The 9th

Equation:

14/2=7 so 7 and 14 facing each other

Draw a circle with that

Draw 6 dots on each blank side

2 rom 14 is 2 so 7+2=9

So the answer is 9th

Final answer:

To determine which person is directly across from the 2nd person in a circle with 14 people, person 9 is directly across from the 2nd person.

Explanation:

To determine which person is directly across from the 2nd person in a circle with 14 people, we need to use modular arithmetic. If we number the people in the circle from 1 to 14, the person directly across from the 2nd person would be 9th. This can be found by adding 7 (the total number of people in the circle divided by 2) to 2, and then taking the remainder when divided by 14. Therefore, person 9 is directly across from the 2nd person.

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4x7/8 will be —————7/8 is it greater than or equal or less than

Answers

4/1 x 7/8 = 28/8 = 3 4/8 -> 3 1/2.

4 x 7/8 > 7/8 because 4 x 7/8 = 3 1/2 which is larger than 7/8.

Help me please I don’t understand

Answers

a² + b² = c²
8² + x² = 16²
x² = 16² - 8²
x² = 192
x =√192
x =8√3
16x16 + 8x8 = 320

*320 = 8*5

Consider U = {x|x is a positive integer greater than 1}.


Which is an empty set?


{x|x ∈ U and 1/2 x is prime}


{x|x ∈ U and 2x is prime}


{x|x ∈ U and 1/2 can be written as a fraction}


{x|x ∈ U and 2x can be written as a fraction}

Answers

Answer: {x|x ∈ U and 2x is prime} is an empty set.

Justification:

U = {x|x is a positive integer greater than 1} = {2, 3, 4, 5, 6, ...}


1) {x|x ∈ U and (1/2) x is prime}

Take x = 4 => (1/2) 4 = 4 / 2 = 2 = prime, so this is not empty.


{x|x ∈ U and 2x is prime}

2) 2x = {4, 6, 8, 10, 12, } so none of them is prime, hence this is an empty set.

3) {x|x ∈ U and (1/2) x can be written as a fraction}

Take any x that is odd. For example x = 3

=> (1/2)x = (1/2)3 = 3/2 which is a fraction, so this is not an empty set.


2) {x|x ∈ U and 2x can be written as a fraction}

Take any value of x, for example x = 7 => 2 = 14, and 14 = 28 / 2 so this is not an empty set.


Answer:

{x|x ∈ U and 2x is prime}

Step-by-step explanation:

got 100%

Which of the fallowing are proportions?

Answers

25/10=5/2

and

3/4=15/20
A, C, and D are all proportional

Which is greater -10 or -20 in absolute value

Answers

|-10| = 10

|-20| = 20

The answer is -20.
-20 because the absolute vaule is 20

Determine the exact value of cos (11pi/6

Answers

Should be 1 I believe

I got 0.999958244

here is a sketch of y=x^2 + bx + c. the curve intersects the x-axis at (2,0) and point P. the y-axis at (0,14) work out the x-coordinate of the turning point of the graph

Answers

Final answer:

Finding the x-coordinate of the turning point of a quadratic equation requires knowledge of its coefficients. Given a function y = x^2 + bx + c, and points (2,0) and (0,14), we need further calculations or information to precisely identify b to use the vertex formula -b/2a effectively.

Explanation:

To find the x-coordinate of the turning point of the graph of the quadratic equation y = x^2 + bx + c, we can use the fact that the vertex of a parabola given by the general form ax^2 + bx + c is at x = -b/2a. Since the quadratic intersects the x-axis at (2,0), we can plug x = 2 into the equation to find one relation between b and c.

Another given point is (0,14), which when plugged in gives c = 14. To find b, we need more information from the question or an understanding of quadratic functions more deeply. However, without b, we can use the vertex formula derivatively, knowing that a in our equation is 1 (since the coefficient of x^2 is 1).

We also know that for any quadratic function, the x-coordinate of the vertex (turning point) can be found using -b/2a. Without the exact value of b, we cannot find the exact x-coordinate directly from the information given.

However, the general methodology would involve using the known points to first find equation coefficients and then apply the vertex formula. This highlights the importance of understanding quadratic functions and their graphical representations, such as vertices and intercepts, to solve these types of problems efficiently.

The x-coordinate of the turning point of the graph is 4.5

How to determine the x-coordinate of the turning point of the graph

From the question, we have the following parameters that can be used in our computation:

[tex]y = x^2 + bx + c[/tex]

It intersects the y-axis at (0, 14)

This means that

[tex]0^2 + b(0) + c = 14[/tex]

c = 14

So, we have

[tex]y = x^2 + bx + 14[/tex]

It intersects the x-axis at (2, 0)

So, we have

[tex]2^2 + 2b + 14 = 0[/tex]

4 + 2b + 14 = 0

2b = -18

b = -9

So, we have

[tex]y = x^2 - 9x + 14[/tex]

The x-coordinate of the turning point of the graph is then calculated as

x = -b/2a

So, we have

x = 9/2

x = 4.5

Hence, the x-coordinate of the turning point of the graph is 4.5

A painting crew reported that a job is 3/5 completed. what fraction of the job remains to be done.

Answers

If we know that a job is 3/5 completed, that means that 3 out of 5 has been completed which means that 2 out of 5 has not been completed.

The required fraction of the job that remains to be done is 2x / 5.

Given that,
A painting crew reported that a job is 3/5 completed. what fraction of the job remains to be done is to be determined.


What is arithmetic?

In mathematics, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication, and division,


Let the whole fraction of the job be x.
A painting crew reported that a job is 3/5 completed = 3/5x
The job remains to be done = x - 3/5x
                                         = 2x / 5

Thus, the required fraction of the job that remains to be done is 2x / 5.

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Calculate the MADs for the teachers' scores. Did the teachers make progress in standardizing the scores?

Answers

The teacher made progress in standardizing the test scores from the beginning of the year to the end. The MAD tells us this because the difference in the teachers scores from the mean is less at the end.  The Mean Absolute Deviation is a measure of variability, and the smaller the number, the less variability there is in the answers.  So, in this example there are more scores closer to the average than when they first graded the essays.

Hans needs to rent a truck. suppose company A charges a rate of $40 per day and company B charges a $60 fee plus $20 per dat. for what number of days is the cost of the same

Answers


[tex]40x = 60 + 20x[/tex]
[tex]20x = 60[/tex]
[tex]x = 3[/tex]
the cost will be the same on day 3

8. Find the radius of a circular lid with an area of 12in.^2.

Answers

Area of circle is πr²

12 = 3.14r²
3.82 = r²
1.95 = r

Which correlation coefficient indicates the stronger linear relationship between random variables for a fixed sample size?
A. r= 0.8
B. r= 0.5
C. r= -0.2
D. r= -0.9

Answers

I think it b r=.5 nnnnn

The required among the given options, the correlation coefficient with the strongest linear relationship is r = 0.8.

What is the correlation coefficient indicates?

The correlation coefficient is a measure of the strength and direction of the linear relationship between two random variables. The value of the correlation coefficient ranges from -1 to +1, where -1 indicates a perfect negative linear relationship, 0 indicates no linear relationship, and +1 indicates a perfect positive linear relationship.

Among the given options, the correlation coefficient with the strongest linear relationship is r = 0.8. This is because the closer the value of the correlation coefficient is to +1 or -1, the stronger the linear relationship between the two random variables. A correlation coefficient of 0.5 indicates a moderate positive relationship, a correlation coefficient of -0.2 indicates a weak negative relationship, and a correlation coefficient of -0.9 indicates a strong negative relationship.

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Douglas is placing strings of lights around the edge of a circular patio with a diameter of 7.5 meters. The lights are in lengths of 1.45 meters.

What is the best approximation for how many strings of lights Douglas needs?

Use 3.14 to approximate for π .

A. 5

B.11

C.17

D.122

Answers

Maybe about 17 meters or 11. I can't remember the equation to use. I'm sorry.

Answer: C: 17


Step-by-step explanation:


Which table correctly shows all the sample spaces for tossing a coin and rolling an odd number on a six-sided number cube? Coin Number cube Outcome Heads 1 Heads, 1 Heads 3 Heads, 3 Heads 5 Heads, 5 Tails 1 Tails, 1 Tails 3 Tails, 3 Tails 5 Tails, 5 Coin Number cube Outcome Heads 1 Heads, 1 Heads 2 Heads, 2 Heads 3 Heads, 3 Tails 4 Tails, 4 Tails 5 Tails, 5 Tails 6 Tails, 6 Coin Number cube Outcome Heads 2 Heads, 2 Heads 4 Heads, 4 Heads 6 Heads, 6 Tails 2 Tails, 2 Tails 4 Tails, 4 Tails 6 Tails, 6 Coin Number cube Outcome Heads 2 Heads, 1 Heads 4 Heads, 3 Heads 6 Heads, 5 Tails 2 Tails, 2 Tails 4 Tails, 4 Tails 6 Tails, 6

Answers

Table D I believe :) Hope this helps!!

Answer:

Coin Number

cube Outcome

Heads  

2

Heads, 2

Heads  

4

Heads, 4

Heads  

6

Heads, 6

Tails  

2

Tails, 2

Tails  

4

Tails, 4

Tails  

6

Tails, 6

Step-by-step explanation:

On a coordinate grid, the distance between point F and point G is 13 units. Point F is located at (-1, 3). Point G is located at (x, -9). Which value could be the value of x?

Answers

Using the distance formula i was able to calculate x=-6
(x+1)² + (-9-3)² = 13²
x² + 2x + 1 + 144 = 169
x² + 2x + 145 - 169 = 0
x² + 2x - 24 = 0
D = 4 + 96 = 100 = 10²
x₁ = (-2-10)/2 = -6
x₂ = (-2+10)/2 = 4

Аnswer: x=-6 or x=4

List three values that make this inequality true 3n≤18

___,___,___

Answers

To make this easier on us, we can solve this inequality.
18/3=6
N is less than or equal to 6. So any number less than 6 would work.
Although there’s infinite values that could make this true, I will list only 3.
6,0,-6
Since it can be equal to, 6 would work. For 0 and -6, they’re both less than 6 so they would work.

The three values that make this inequality true 3n ≤ 18 are 6, 5, and 4.

We have,

To find three values that make the inequality 3n ≤ 18 true, we can simply substitute different values of n and check if the resulting statement is true or false.

Here are three values that satisfy the inequality:

n = 6:

3n = 3(6) = 18, which is equal to the upper bound of the inequality. Therefore, 3n ≤ 18 is true for n = 6.

n = 5:

3n = 3(5) = 15, which is less than 18. Therefore, 3n ≤ 18 is true for n = 5.

n = 4:

3n = 3(4) = 12, which is less than 18. Therefore, 3n ≤ 18 is true for n = 4.

Note that there are infinitely many values of n that satisfy this inequality, but these three values are enough to demonstrate that the inequality is true for at least three specific values of n.

Thus,

The three values that make this inequality true 3n ≤ 18 are 6, 5, and 4.

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how do you find out the percent of the pie chart

Answers

Hello there!

If you divide the pie chart into fours, then each one will be 25%

Divide 25% in half, and you will get 12.5%

Therefore,

1. 12.5% Chose purple

Now if you want to get the amount of people:

360 divided by 100 = 3.6

3.6 times 25% (green)

2. 90 people Chose green

For the last one same principle:

(Blue) 90 people, (orange) 45

3. 45 (half) more people chose blue, over orange.

Hope this helps!

~Alexa

Final answer:

To determine the percentage of a pie chart slice, divide the value by the whole and multiply by 100. The pie represents the entire data set, and the slices show the percentage that each category contributes to the whole.

Explanation:

To find out the percent of a pie chart, observe that each slice of the pie represents a specific share of the whole. If you know the entire value that the pie chart represents, you can calculate the percentage for each slice by dividing the value of the slice by the total value and multiplying by 100. For instance, if a pie chart represents the population by age groups, and there are 1000 people in total where 200 are aged 65 and over, the slice of the pie chart for those 65 and over would be (200/1000)*100, which equals to 20%.

Pie graphs are particularly useful for displaying how a whole is divided into parts, such as in division of government spending, categorization of the population, or distribution of market share among firms. A key point to remember is that the sum of all percentages in a pie chart should equal 100%, unless it is representing overlapping categories where participants can be counted in multiple categories. When that's the case, a pie chart is not the appropriate graph to use.

The solution to 5.2x = 14.04 is x = ___.

0.37
2.7
8.84
73.01

Answers

5.2x = 14.04
     x = 14.04 / 5.2
     x = 2.7

answer
2.7
The answer to this is 2.7

Please help on this problem

Answers

Answer: EP is 12 and EO is about 10.91.

To find the length of EP, we can use the Pythagorean Theorem with the 2 legs of the right triangle it would form, EC and CP. CP would be 5 because it is the midpoint of the side.

5^2 + (EP)^2 = 13^2
EP = 12

Now, to find EO, we write and solve another Pythagorean Theorem equation using 12 for EP.

5^2 + (EO)^2 = 12^2
EO equals the square root of 119 or about 10.91.

a photograph measures 10 inches by 12 inches. a frame with constant width is placed around the photograph so that the total area of the framed photo is 288 square inches. what is the width of the frame? enter your answer in the box.

Answers

The correct answer is 3 inches.

To find this answer, we need to write and solve a quadratic equation.

Let's call the width of the frame X.

Then, the total width is 10 + 2x and the total length is 12 + 2x.

Having this information, we can write and solve the following equation.

(10 + 2x)(12 + 2x) = 288
4x^2 + 44x + 120 = 288
4x^2 + 44x - 168 = 0
4(x - 3)(x + 14) = 0

The solutions are 3 and -14, but only 3 makes sense in the story problem.

Answer:

3

Step-by-step explanation:

took test rn i ithink they ar right

A Gardener has 560 feet of fencing to fence in a rectangular garden. One side of the garden is bordered by a river so it does not need any fencing. What dimensions would guarantee that The Gardener has the greatest possible area

Answers

The dimensions that give the largest possible area are 186 by 187, with an area of 34,782ft².

To maximize area and minimize perimeter, you make the figure as close to equilateral as possible.  560/3 = 186 2/3.  We would rather use whole number dimensions, so we would have 186 for one side.  560-186 = 374.  374/2 = 187 for the other dimension.

Answer:

Each side of the garden should be 186.67 feet

Step-by-step explanation:

We know that the biggest area of a rectangular prism is when it closer to a square, and we know that a square is a special kind of rectangle with all equal sides, so we want all the sides to be equal.

To do this we know that the Gardener has 560 feet of fencing and he is only going to fence 3 sides because the other side is bordered by a river.

So we have to divide the fencing by the sides to have equal sides:

560 feet / 3 sides = 186.67 feet per side.

So the garden will be a square with each side of 186.67 feet, and the area will be:

186.67 * 186.67 = 34,845.70 square feet.

PLEASE HELP ME I NEED HELP NOW AND NO ONE IS ANSWERING

Consider the relationship between the place values of the 4s in this number.

444.44

Choose ALL answers that are correct.
(more than one)

A. The 4 in the hundredths place is 10 times the value of the 4 in the tenths place.


B. The 4 in the tens place is 10 times the value of the 4 in the ones place.


C. The 4 in the hundredths place is 1/10 times the value of the 4 in the tenths place.

Answers

All the choices are correct.

_____
In our base-10 number system, moving a digit one place to the left multiplies its value by 10. Moving it one place to the right multiplies its value by 1/10.

You know already that 1,000 has 10 times the value of 100, and 1/10 the value of 10,000.

15 points!!!!!help!!!!!!!!!!!!

Answers

Hi! :)

So a right triangle is a triangle that contains a ninety degree angle, it's not classified by side length. A scalene triangle is a triangle in which all three sides are different lengths. An isosceles triangle has two sides that are the same length. Either a scalene or an isosceles triangle could contain a right angle, so your answer is yes. 

Hope this helps! 
Answer is NO.
A right triangle cant be both scalene and isosceles
because 
A scalene triangle has three sides of different lengths,no congruent sidesAn isosceles triangle has two congruent sides.

Please HELPPPPPP !!
Triangle DEF is translated two units up and two units right on a coordinate plane. Which of the following scenarios best represent(s) triangles DEF and D’E’F’. Select all that apply.

The area of triangle D’E’F’ is twice the area of triangle DEF.
The area of triangle D’E’F’ is equal to the area of triangle DEF.
The area of triangle D’E’F’ is half the area of triangle DEF.
The area of triangle D’E’F’ is four times the area of triangle DEF.

Answers

we know that

the triangle DEF is translated following the rule
(x,y)-----> (x+2,y+2)
in the translation the figure maintains its dimensions
so
the area of triangle DEF is equal to the area of the triangle D’E’F’

therefore

the answer is
The area of triangle D’E’F’ is equal to the area of triangle DEF. 

Answer:

that is right its The area of triangle D’E’F’ is equal to the area of triangle DEF.

Step-by-step explanation:

In a school library, 52% of the books are paperback. If there are 2,658 books in the library, how many of them are nit paperback to the nearest whole number?

Answers

48% of 2,658
48/100 x 2,658
= 1275 books are not paperbacks.

Please help quick if you know the answer

Answers

Ok so I just looked it up and the answer should be Letter
C. 8,240,000
Brainliest pts
The correct answer is "C. 8,240,000" Hope this helps.

Miguel has $20. He spends $6.25 on a movie ticket, $3.70 for snacks, and $1.25 for bus fare each way.

Answers

So we know Miguel has 20$ so from there we subtract the prices of the movies ticket, snacks, and the bus fares.
20 - 6.25 = 13.75

13.75 - 3.70 = 10.05

Since the bus fare is each way (to and back) we multiply 1.25 x 2
1.25 x 2 = 1.50

10.05 - 1.50 = 8.55
He has $8.55 left

Courtney has $4.95 in nickels, quarters, and dimes. She has12 quarters and 9 nickels. How many more dimes than nickels does she have?
A. 15
B. 10
C. 6
D. 4

Answers

The answer to this is C. 6

You have to find the value of the coins that you have now. Then you add them. Next, you subtract that value from the original total of 4.95. After that, you take that amount and divide it by the value of a dime. Lastly, you subtract the number of nickels from the number of dimes. 
So 12x.25=3 and 9x.05=.45
3+.45=3.45
4.95-3.45=1.5
1/5/.10=15
15-9=6
The answer is 6.

Final answer:

Calculate the difference in the number of dimes and nickels to find out how many more dimes Courtney has. The solution involves determining the total value of quarters and nickels, finding the number of dimes, and subtracting to get the difference. There are 6 more dimes than nickels.

Explanation:

To find how many more dimes Courtney has than nickels:

Calculate the value of quarters: 12 quarters * $0.25 = $3.00

Calculate the value of nickels: 9 nickels * $0.05 = $0.45

Subtract the total value of quarters and nickels from the total amount: $4.95 - $3.00 - $0.45 = $1.50

Since each dime is $0.10, divide $1.50 by $0.10 to find the number of dimes Courtney has: $1.50 / $0.10 = 15 dimes

Calculate the difference between the number of dimes and nickels: 15 dimes - 9 nickels = 6 more dimes than nickels

Therefore, Courtney has 6 more dimes than nickels.

An isosceles triangle has a base of 8 feet and a height of 6 feet. What is the length of one of the two congruent sides? Work and a diagram would be appreciated using the Pythagorean Theorem

Answers

8^2 + 6^2 = c^2 (a^2 + b^2 = c^2)
64 + 36 = 100
square root of 100 = 10
The third side is 10 feet. 

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