I really need help with this.

I Really Need Help With This.

Answers

Answer 1

9514 1404 393

Answer:

  a.  (1.4, 2.6)

  b.  (3, 2)

Step-by-step explanation:

a. The circumcenter is the intersection point of the perpendicular bisectors of the sides of the triangle.

For points X(a, b) and Y(c, d), the perpendicular bisector of XY can be written as ...

  (c -a)(x -(c+a)/2) +(d -b)(y -(d+b)/2) = 0

Then the equation of the perpendicular bisector of MN is ...

  (-2-4)(x -(-2+4)/2) +(4-0)(y -(4+0)/2) = 0

  -6(x -1) +4(y -2) = 0

  3x -2y = -1 . . . .  divide by -2 and put in standard form

Similarly, the perpendicular bisector of NO is ...

  (0-(-2))(x -(0-2)/2) +(6 -4)(y -(6+4)/2) = 0

  2(x +1) +2(y -5) = 0

   x + y = 4 . . . . divide by 2 and put in standard form

So, the point of intersection is ...

  (3x -2y) +2(x +y) = (-1) +2(4) . . . . . add twice the 2nd equation to the 1st

  5x = 7 . . . . . . simplify

  x = 1.4 . . . . . . divide by 5

  y = 4-1.4 = 2.6 . . . . . find y from the second equation

The coordinates of the circumcenter are (1.4, 2.6).

__

b. The centroid is the average of the vertex coordinates.

  centroid = (A +B +C)/3 = ((1, 2) +(3, 4) +(5, 0))/3 = (1+3+5, 2+4+0)/3 = (9, 6)/3

  centroid = (3, 2)

I Really Need Help With This.

Related Questions

Solve using the substitution method. 3x +2y= 19 xy= 15​

Answers

Answer:

when x = 3 1/3, y = 4.5

or

when x =3 , y = 5

Step-by-step explanation:

Here, we want to solve using substitution

xy = 15

let x = 15/y

Put this into the first equation;

3(15/y) + 2y = 19

45/y + 2y = 19

Multiply through by y

45 + 2y^2 = 19y

2y^2 -19y + 45 = 0

2y^2 - 10y - 9y + 45 = 0

2y(y-5) -9(y-5) = 0

(2y-9)(y-5) = 0

2y-9 = 0

or y-5 = 0

2y = 9 or y = 5

y = 9/2 or y = 5

y = 4.5 or y = 5

Recall;

x = 15/y

x = 15/4.5 or x = 15/5

x = 3 1/3 or x = 3

A water tank in the shape of a pyramid has a rectangular base with dimensions of 10 feet by 15 feet. The height of the rectangular pyramid is 12 feet. Water fills half the volume of the water tank. How many more cubic feet of water is needed to finish filling the water tank?
(Explanations are appreciated along with your answer.)

Answers

600ft³ will be the required volume

Volume of pyramid

The formula for calculating the volume of the rectangular prism is expressed as:

V = 1/3lwh

Given the following information

l = 10 feet

w = 15feet

h = 12 feet

Get the volume

V = 1/3(10 * 15 *12)

V = 1/3(1800ft³)

V = 600ft³

Hence 600ft³ will be the required volume

Learn more on volume of prism here: https://brainly.com/question/23963432

mrs. rodrigues wants to compare the spread of the test scores of her two biology classes. which statistic should she use? (multiple choice)

a.) mean
b.) standard deviation
c.) median
d.) mode

if anybody can help me with this, thank you so much! i'm trying to pass a pre-test on e.d.g.e.n.u.i.t.y :( if you know the answer, please explain instead of just giving me the answer alone. thank you! <3

Answers

C Its definitely c...........

Mrs. Rodrigues should use Standard deviation.

The correct option is b.

What is a standard deviation?

The square root of the variance is used to calculate the standard deviation, a statistic that expresses how widely distributed a dataset is in relation to its mean.

Given:

Mrs. Rodrigues wants to compare the spread of the test scores of her two biology classes.

From the given choices:

The measures of spread include:

Range, quartiles, interquartile range, variance and standard deviation.

Standard deviation is the appropriate choice.

Therefore, standard deviation is the correct phrase.

To learn more about the standard deviation;

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This is anyone who wants easy points. What comes after B in the alphabet. Just tryna help someone

Answers

Answer:

C

Step-by-step explanation:

C is the 3rd letter in the alphabet

Adam has 3 coins in his pocket and they are all different from each other. Ben has 3 coins in his pocket and they are all the same as each other. Adam has half as much money as Ben.
What are the coins they each have?

Answers

Answer:

The possible coins are:

P = penny = $0.01

N = nickel = $0.05

D = dime = $0.10

Q = quarter = $0.25

H = half dollar = $0.50

We know that Adam has 3 coins in his pocket, and all of them are different, then the money that Adam has can be represented with (A + B + C)

Behn has 3 coins, and all of them are the same, then if his coin has a value X, he has a total of 3*X

We know that Adam has half as much money as Ben, this can be written as:

(A + B + C) = 3*X/2

The easier way to solve this, is to play with different values of X, and see if we can find the values of A, B and C.

For example, if X = $0.10

then:

(A + B + C) = $0.10*(3/2) = $0.15

We can find 3 different value of coins for this equation? No, we cant, so X = $0.10 is also discarded.

if x = $0.50 then:

(A + B + C) = (3/2)*$0.50 = $0.75

Here we could have:

A = $0.50

B = $0.25

then: A + B = $0.75

But we still have the coin C.

If we take X = $0.25 then:

(A + B + C) = (3/2)*$0.25 = $0.375

We could round the right part to $0.40

then the coins in the left part would be:

A = $0.25

B = $0.10

C = $0.05

A + B + C =  $0.25 + $0.10 +  $0.05 = $0.40

This is a strech, but is the only thing we can make with the given problem.

T= 3x + 4y
Toe ons
(a) Work out the value of I when x = 5 and y=-7

Answers

Note: Consider the dependent variable is T instead of I, and we need to find the value of T when x=5 and y=-7.

Given:

[tex]T=3x+4y[/tex]

To find:

The value of T when x=5 and y=-7.

Solution:

We have,

[tex]T=3x+4y[/tex]

Putting x=5 and y=-7, we get

[tex]T=3(5)+4(-7)[/tex]

[tex]T=15-28[/tex]

[tex]T=-13[/tex]

Therefore, the value of T is -13 when x=5 and y=-7.

Find the value x

please help

Answers

Answer:

Step-by-step explanation:

A newspaper article reports the results of an election between two candidates. The article says that Smith received 60% of the votes and that Murphy received 15 of the votes. A reader writes in to complain that the article cannot be accurate. What reason might the reader have to say this?

Answers

Step-by-step explanation:

Since, smith receives 60% of the vote this means murphy must receive 40% of the vote. Therefore 15 = 40% of the total vote.

Thus total vote = 37.5, which is kind of absurd. As total vote count must be an integer. Moreover, the report must be consistent with the result, which does not seem in this case.

Which one represents the equivalent of the following expressions combined -2x² + 7x - 6 and 3x² - 8x – 1 ?


a. X²+X-7
b. X²+X-5
c. X²-X-7
d. X²-X-5​

Answers

Answer:

C

Step-by-step explanation:

Adding we get:

-2x^2+3x^2 + 7x - 8x - 6 -1 = X^2 -x-7

William’s team won 16 games and lost 4 games. Tracey’s team won 15 games and lost 5 games. Whose team had the greater ratio of wins/losses?

Answers

Answer: William's is 16:4 and Tracey's are 15:5

Step-by-step explanation:

Help plz i'll mark brainliest

Answers

Answer:

C

Step-by-step explanation:

look at the graph of a line and write its equation​

Answers

1/3 x + 2 =y , that’s the answer

what is the solution of the equation y=7x-2

Answers

Answer:

1/7y and 2/7

Step-by-step explanation:

7.6 cm
Diagram NOT
accurately drawn
A circle has a radius of 7.6 cm.
Work out the area of the circle.
Give your answer correct to 3 significant figures.​

Answers

Answer:

181cm²

Step-by-step explanation:

Given

Radius of a circle = 7.6cm

Area of the circle = \pi r²

Substitute

Area of the circle = 3.14(7.6)²

Area of the circle  = 3.14(57.76)

Area of the circle = 181.3664cm²

Area of the circle to 3sf is 181cm²

Solve the system by graphing.
y=x+1
y=4x+7
The solution is ( , )

Answers

Answer:

(-2,-1)

Step-by-step explanation:

x+1=4x+7

3x=-6

x=-2.

y=-2+1

y=-1.

please help, I need this answer today (2/10/2021)

w=yh−5t, for y

Answers

Answer:

y = w /h  + 5 t/ h

i believe

Step-by-step explanation:

Answer:

Y= w/h + 5t/ h

Step-by-step explanation:

There's really not much to go off of here. So I just simply Isolated the variable. I hope this is what you were looking for.

Find the recursive definition for this sequence
2,6,18,54,162​

Answers

Each number is multiplied by 3 to get to the next. Think about how you get from the number to the next, and so on.

is the relation a function?

Answers

The answer would be ~A.it is a function~ because none of the x’s repeat

Hope this helps

Have a great day/night

Find the value of x. Then classify the triangle by its angles.

Answers

x= 15° and it is and acute triangle

A 10-meter ladder leans against the wall, it is 5 meters from the base of the wall. How high, h, does the ladder reach to the nearest tenth of a meter?

Answers

Answer:

did you figure out the answer because I need it please

Kayla has a weekly budget of $640. She works at a clothing store and makes $220 per week, plus 20% commission on the merchandise she sells to her customers.


Which of the following is the correct interpretation of the solution?

A. Kayla can sell $2,100 or less to reach her weekly budget
B. Kayla needs to sell $2,100 or more to reach her weekly budget
C. Kayla needs to sell more than $2,100 to reach her weekly budget
D. Kayla can sell less than $2,100 to reach her weekly budget

Answers

Answer:

i think it would be C, im not sure though

Step-by-step explanation:

Use the GCF and the distributive property to find the sum of 22+33

Answers

Answer:

22 + 33 = 55 the GCF of 22 and 33 is 11

Step-by-step explanation:

The sum of 22 and 33 by using distributive property will be; 55.

How to find Greatest common factor?

The greatest common factor, as the name implies, is the greatest among all common factors among the quantities given.

We can factorize the quantities in the smallest relative factors possible (one level of factors over which all quantities can form themselves), and collect as many common factors as we could.

Factors:

22: 1 ,2, 11, 22

33: 1, 3, 11, 33

Both the numbers have a GCF of 11. Then by removing 11 from both numbers you end up with:

22 = 2 x 11

33 = 3 x 11

Now replace the values on the right of the equals sign into the original equation then;

(2 x 11) + ( 3 x 11)

The distributive property allows us to remove the common values and rewrite them;

11(2 + 3)

11(5)

55

The sum of 22 and 33 by using distributive property will be; 55.

Learn more about the greatest common factor here:

https://brainly.com/question/207329

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Find the area of the trapezoid

Answers

Count the number of Little boxes there are on each side Like I did in the picture below. Then separate the triangle and the rectangle so that you can find the area of the rectangle first which you can figure out with just doing base times height. Then find the area of the triangle which is base times height divided by 2. The area of the rectangle should be 20 and the area of the triangle should be 6. Then you just add the two together so the area of a trapezoid should be 26. Now this is the area of the trapezoid not the perimeter. Perimeter and area are different things to find the perimeter you just count the outside lines of the trapezoid so it would be 5+4+5+3 Plus the long side of the triangle which you find by using Pythagorean theorem (A squared plus B squared equals C squared) I also show this in the picture below.

Find the scale factor
A. 3.5
B. 3/5
C. 35

Answers

Answer:

3.5

Step-by-step explanation:

35/10 = 3.5

Two groups of hikers leave the same camp heading in opposite directions. The first group travels 4 miles north and 3 miles east. The second group travels 2 miles south and 5 miles west.

a. Draw the situation in the coordinate plane using a right triangle. Use the origin as the camp location, and let each unit represent 1 mile. For example, the point (2, 1) would represent 2 miles east and 1 mile north of the camp.

b. Determine the distance between the two groups after the hikes.


Question 2
The distance between the two groups is __ miles.

Answers

Answer:

can you answer my qeustion the first one please

f(x) = -x² + x + 14
Find f (2)

Answers

Answer:

Step-by-step explanation:

f(2) = -2^2 + 2 + 14 = -4 + 2 + 14 = 12

Answer:

f(2) = 20

Step-by-step explanation:

f(x) = -x^2 + x + 14

f(2) = (2)^2 + (2) + 14

f(2) = 4 + 2 + 14

f(2) = 20

Writh an equation of a line in slope-intercept form for the given conditions.

slope =2 and passes through (-5,2)

y=​

Answers

Answer:

y=2x+12

Step-by-step explanation:

y-2=2(x-(-5))

y-2=2(x+5)

y-2=2x+10

y=2x+12

Julio gets paid $10.00 an hour to babysit his cousins 4 hours a week. He allows himself to spend $7.00 a week and he saves the rest. How much will he have saved in 5 weeks?

Answers

$165.00

$10*4= $40

$40 x 5 = $200
$200- (5 x $7)
$200-35
$165

Answer:

$165.00

Step-by-step explanation:

3(x + 1) + 5(2x –5)–2(x –2)= 4


solve

Answers

Answer:

x=2

Step-by-step explanation:

3x+3+10x-25-2x+4=4

11x-18=4

11x=4+18

11x=22

x=22/11

x=2

Answer:

x = 2

Step-by-step explanation:

3(x + 1) + 5(2x –5)–2(x –2)= 4

First, let's distribute the numbers across the parentheses through multiplication.

3x + 3 + 10x - 25 - 2x + 4 = 4

Combine like terms.

11x - 18 = 4

Add 18 to both sides to isolate x.

11x = 22

Divide both sides by 11 to isolate x further.

x = 2

Check by plugging 2 back into the equation.

3(2 + 1) + 5(2(2) - 5) - 2(2 - 2) = 4

3(3) + 5(4 - 5) - 2(0) = 4

9 + 5(-1) - 0 = 4

9 - 5 = 4

4 = 4

Your answer is correct.

Hope this helps!

Teresa has made 124 bags of treats. Each person was able to take 2 bags home. If there were 40 people, how many extra bags were left?

Answers

Answer:

31

Step-by-step explanation:

Answer:

the answer to your question would be 44

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