What are the coordinates of the centroid of a triangle with vertices X(−4, 0) , Y(−1, 4) , and Z(2, 2) ? Enter your answer in the boxes.

Answers

Answer 1

[tex]distance \: xy \: = \sqrt{( { (3)}^{2} + {(4)}^{2} ) } \\ = \sqrt{(9 + 16)} = \sqrt{25} = 5[/tex]
[tex]distance \: xz \: = \sqrt{( {(2)}^{2} + {(6)}^{2} ) } \\ = \sqrt{(4 + 36)} = \sqrt{40} \\ = \sqrt{4} \times \sqrt{10} = 2 \sqrt{10} [/tex]
Answer 2

The centroid of a triangle is the point where the medians of the triangle meets.

The coordinates of the centroid is (-1,2)

The coordinates of the triangle are given as:

[tex]X = (-4,0)[/tex]

[tex]Y = (-1,4)[/tex]

[tex]Z = (2,2)[/tex]

The coordinates of the centroid is:

[tex]C = \frac 13(x_1 + x_2 + x_3,y_1+y_2+y_3)[/tex]

So, we have:

[tex]C = \frac 13(-4-1 + 2,0+4+2)[/tex]

[tex]C = \frac 13(-3,6)[/tex]

Expand

[tex]C = (\frac 13\times -3,\frac 13\times 6)[/tex]

[tex]C = (-1,2)[/tex]

Hence, the coordinates of the centroid is (-1,2)

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Related Questions

In science class, the girl to bot ratio is 3 to 7, if there are 50 students total in the class, how many are boys

Answers

number of boys = (7 /(7+3))*50  =( 7 / 10 )*50 = 7*5 = 35

so there are 35 boys in the class

Anna is conducting a study about the effects of toxins in the water on the hormones of fish. Anna surveys 420 male fish in a river and finds that 130 of the male fish have egg cells growing inside them. According to Anna's survey, what is the ratio of male fish with egg cells to male fish without egg cells in the river?

Answers

130:290 simplified to 13:29

The ratio of male fish with egg cells to male fish without egg cells is 130:290, which simplifies to 13:29.

To determine the ratio of male fish with egg cells to those without, you must subtract the number of male fish with egg cells from the total number of surveyed male fish. According to Anna's survey, she found that 130 male fish out of 420 had egg cells. This implies that 420 - 130 = 290 male fish do not have egg cells.

Now, to find the ratio:

Male fish with egg cells: 130

Male fish without egg cells: 290

The ratio of male fish with egg cells to male fish without egg cells is 130:290. This ratio can also be simplified by dividing both parts by the greatest common divisor, which is 10 in this case. After simplification, the ratio becomes 13:29.

the altitude to the hypotenuse of a right triangle is the geometric mean between the segments on the hypotenuse

A. always
B.sometimes
C. never

Answers

Answer:

Option: A is the correct answer.

     A.   always

Step-by-step explanation:

Right Triangle Altitude Theorem--

It states that when an altitude is drawn from the the vertex containing the right angle to the opposite side i.e. hypotenuse then the length of the altitude is the geometric means between the segments on the hypotenuse.

i.e. if we consider a right angled triangle ΔCAB with right angle at A.

Then if  a altitude AD is drawn from vertex A then we have:

[tex]AD=\sqrt{CD\cdot DB}[/tex]

How to algebraically find the inverse of a function?

Answers

switch your x with y values and y with x values ( now ur previous y elements should be x and your previous x elements should be y)

then isolate the equation to solve for y

The inverse function of y = 3x + 2 is y = ( -x + 2 )/3 obtained by switchig the places of x and y.

What is a function?

A function can be thought of as an output for the given set of inputs.

To find the inverse of a function algebraically first we have determine whether the given function is one-to-one or not. A one-to-one function is a function in which each different value of the domain corresponds to a different value in the range of the function.

Suppose we have a function f(x) = 3x + 2 which can be written as y = 3x + 2.

Now to obtain the inverse of this function we have to switch x and y in their respective places and solve for y.

∴ y = 3x + 2

x = 3y + 2.

3y = - x + 2.

y = ( -x + 2 )/3.

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Ashley drove 5 hours and 45mins and drove 391 miles. How far did she drive in 1 hour

Answers

1 hour = 60 minutes
5 x 60 = 300
300 + 45 = 345

391 miles/345 min = 1.13 miles per min
1.13 x (60 min/1 mile) = 67.8 miles per hour

Ashley drove ~67.8 miles per hour

hope this helps

A city council has to use its resources to improve either the water supply or the drainage system. At which level is this decision made?

Answers

A city council has to use its resources to improve either the water supply or the drainage system. At which level is this decision made?


The asnswer is: Government

Solve for x over the complex numbers. x2+10x+41=0

Answers

The correct answer is X= -5±41
x²+10x+41=0
using x=(-b±√b²-4ac)½
where a= 1
b=10
c=41

x= (-10±√10²-4×1×41)½
x=-5 ± √(100-164)
x=-5±√(-64)½
x=-5±4i
x=-5+4i or -5-4i
where i= √-1

4.5+1.5k=18−3k
solve for k

Answers

Answer: I think its 3

Step-by-step explanation:

4.5+4.5=9 and 3*3=9 so 18-9=9 so K=3

The value of k is 3.

What is an equation?

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

Example:

2x + 3 = 99 is an equation.

We have,

4.5 + 1.5k = 18 - 3k

Combine like terms on one side.

1.5k + 3k = 18 - 4.5

4.5k = 13.5

Divide both sides with 4.5

k = 3

Thus,

The value of k is 3.

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Serra rode 15 mi in 1.5 hr. Phaelon rode 38 mi in 3.5 h. Justice rode 22 mi in 2.25 hr. Who had the fastest average speed?

Answers

speed = distance / time

Serra : 15/1.5 = 10 miles per hr
Phaelon : 38/3.5 = 10.857 rounds to 10.86 miles per hr
Justice : 22/2.25 = 9.777 rounds to 9.8 miles per hr

fastest average speed is Phaelon
Final answer:

Using the formula of average distance = total distance traveled / total time taken, we find that Phaelon had the fastest average speed of 10.86 mi/hr.

Explanation:

To find out who had the fastest average speed, we'll need to calculate the average speed for each person. We can do this by dividing the total distance traveled by the total time taken.

Serra's average speed: 15 mi / 1.5 hr = 10 mi/hr

Phaelon's average speed: 38 mi / 3.5 hr = 10.86 mi/hr

Justice's average speed: 22 mi / 2.25 hr = 9.78 mi/hr

So, by comparing these speeds, we can conclude that Phaelon had the fastest average speed of 10.86 mi/hr.

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Find the area of the triangle with vertices: q(3,-4,-5), r(4,-1,-4), s(3,-5,-6).

Answers

Answer:

  (√6)/2 square units

Step-by-step explanation:

The area of a triangle is half the magnitude of the cross product of the vectors representing adjacent sides.

  QR = (4-3, -1-(-4), -4-(-5)) = (1, 3, 1)

  QS = (3 -3, -5-(-4), -6-(-5)) = (0, -1, -1)

The cross product is the determinant ...

[tex]\text{det}\left|\begin{array}{ccc}i&j&k\\1&3&1\\0&-1&-1\end{array}\right|=-2i+j-k[/tex]

The magnitude of this is ...

  |QR × QS| = √((-2)² +1² +(-1)²) = √6

The area of the triangle is half this value:

  Area = (1/2)√6 . . . . square units

How many solutions are there to the following system of equations? Use any method you like, but be sure to show all work.
4x – 14y = 6
–2x + 7y = –3

Please please help! I'm really bad at this! Please show your work so I can understand

Answers

Normally you would expect one solution for x and y, but in this special case, there are an infinite number of solutions because both equations are the same. If you multiply the bottom one with -2, you get:

-2*-2x + -2*7y = -2*-3 simplifies to
4x - 14y = 6, which is the top equation!

If you have one equation with two variables, it is typically not solvable with one set of solutions. x=5 and y=1 is a solution, but so is x=12 and y=3. Those are just two examples.

Is the ordered pair (-2, 9) a solution of the equation y = x – 7?

Answers

Final answer:

The ordered pair (-2, 9) is not a solution of the equation y = x – 7.

Explanation:

To determine if the ordered pair (-2, 9) is a solution of the equation y = x – 7, we can substitute the values of x and y into the equation and see if it is true.

Plugging in the values, we have 9 = -2 - 7. Simplifying, we get 9 = -9. Since this statement is false, the ordered pair (-2, 9) is not a solution of the equation y = x – 7.

Final answer:

The ordered pair (-2, 9) is not a solution to the equation y = x − 7 because when you substitute x with -2, the equation yields y = -9, not y = 9 as suggested by the ordered pair.

Explanation:

To determine if the ordered pair (-2, 9) is a solution to the equation y = x − 7, we need to substitute the x-value from the ordered pair into the equation and see if the resulting y-value matches the one in the ordered pair.

Let's substitute x = -2 into the equation:

y = (-2) − 7

y = -2 − 7

y = -9

This means that when x is -2, y should be -9 according to the equation. However, the y-value given in the pair is 9, not -9. Therefore, the ordered pair (-2, 9) is not a solution to the equation y = x − 7.

Compare the square root of 7 and 2.1

Answers

for 7 its 2.64 and is bigger than 2.1

solve the equation w/4=32

Answers

w = 128. Why? Because if you divide 128 by 4, you get 32. To check, 32 * 4 = 128.

Hope this helps! ☺♥

, , and are tangent to circle o through points c, b, and e, respectively. if mdaf = 66° and mfda = 56°, what is meob?

Answers

122 degrees. I hope.  

which is equivelent to 256 2/5

Answers

1282/5 (improper fraction) is equivalent to 256 2/5

hope this helps

P=(20+0.5x)+ 0.15(20+0.5x)

Answers

Calculated to be P = 23 + 0.575x
your answer should be 23.575x

Please Help me!!!!!! Simplify the expression AND show your work:

sqrt(4x^2/3y)

Answers

sqrt(4x^2/3y)
Change the 4x^2 to (2x)^2
sqrt((2x)^2/3y)
= 2x sqrt(1/(3y))
Do you want me to simplify it any more?

For the given expression, the simplified form is [tex]\frac{2x\sqrt{3y} }{3y}[/tex]

From the question, we are to simplify the expression sqrt(4x^2/3y).

The expression is [tex]\sqrt{\frac{4x^{2} }{3y} }[/tex]

We can write that,

[tex]\sqrt{\frac{4x^{2} }{3y} } = \frac{\sqrt{4x^{2}}}{\sqrt{3y}}[/tex]

Then,

[tex]\frac{\sqrt{4x^{2}}}{\sqrt{3y}} = \frac{2x}{\sqrt{3y} }[/tex]

To simplify further, we can rationalize the denominator

We get

[tex]\frac{2x}{\sqrt{3y} } = \frac{2x}{\sqrt{3y} } \times \frac{\sqrt{3y} }{\sqrt{3y} }[/tex]

Then,

[tex]\frac{2x}{\sqrt{3y} } \times \frac{\sqrt{3y} }{\sqrt{3y} } = \frac{2x\sqrt{3y} }{3y}[/tex]

Hence, for the given expression, the simplified form is [tex]\frac{2x\sqrt{3y} }{3y}[/tex]

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Saidhari bought a toaster oven for $60. this price was 1/4 The list price. What is the list price

Answers

60*4 = 240; the list price is $240

Suppose △ ITH ≅ △ APG

Which congruency Statement is true?
A) IH ≅ AG
B) TH ≅ AG
C) IT ≅ AG
D) TH ≅ AP

Answers

To figure this question out, I recommend the FOIL method.

F: First
O: Outer
I: Inner
L: Last

Statement A is true. IH and AG in the FOIL method is the Outer.

Answer: A) IH ≅ AG

Step-by-step explanation:

A property of congruent triangles is known as CPCTC which says that the congruent parts of the corresponding triangle are congruent.

We are given that Δ ITH ≅ Δ APG , then the every part of Δ ITH must be congruent to the corresponding part of  Δ APG.

i.e. Corresponding sides of Δ ITH and Δ APG  are congruent.

Since Side IH in Δ ITH  is corresponding to side AG in Δ APG  [First and last letter]

Then, IH ≅ AG

Based upon statistical studies, it takes about one-third less time for fans to exit a game as it does for them to enter and find their seats. If the ingress for the stadium is 3,000 fans per hour, what is the egress?

Answers

Given data shows that 1/3 time less time for fans to exit a game as it does for them to enter and find their seats. Ingress for the stadium = 3,000 fans per hour Ingress rate = (1 - 1/3) x Egress rate = 2/3 Egress rate Egress rate = 3/2 ingress rate = 3/2 x 6,000 = 9,000 fans per hour

Answer:

4500 fans per hour

Step-by-step explanation:

joni borrowed money from her aunt and agreed to pay her 5% simple annual interest. At the end of 3 years, she owes $30 in interest. how much did jodi originally borrow? A. 150
B. 200
C.220
D. 300

Answers

Joni pays an annual interest of 5%. This means that in three years, the interest is 15%.

Assume that the amount Joni borrowed is m.
After three years, the interest is 30$.

This means that:
15% of the amount m = 30$
0.15m = 30
m = 30/0.15 = 200

Joni originally borrowed 200$

Answer:

B

Step-by-step explanation:

What is the solution to -5m = -40? m = -8 m = 200 m = -200 m = 8

Answers

-8. Divide 40 by -5 blah blah blah
 -5m = -40
    m = -40 / -5
    m = 8

answer
m = 8

The length of Leland’s garden is 15m 24cm.the length of his friend garden is 2m 98cm more than Leland’s . What is the length of his friend garden ?

Answers

15m 24cm + 2m 98cm
24cm+98cm=122cm or 1m 22cm
15m+2m=17m plus the 1m 22cm for a total of 18m 22cm

His friend's garden is 18.22 meters long.

R (Read):

Leeland's garden is 15 meters and 24 centimeters long.

His friend's garden is 2 meters and 98 centimeters longer than Leeland's.

We need to find the length of his friend's garden.

D (Define):

Let L be the length of Leeland's garden in meters.

Let F be the length of his friend's garden in meters.

W (Write):

We can write the given information as equations:

L = 15.24 meters (converting 24 cm to meters)

F = L + 2.98 meters

Solve:

Substitute equation 1 into equation 2:

F = (15.24 meters) + 2.98 meters

F = 18.22 meters

Enter the equation: 3 less than 1/2 a number is -71.

Answers

The answer would be 1/2N-3=-71 because if the awhile thing need to be -71 then you first need to set it equal to -71 and then if it needs to be a have of a number use N and the number and to find a half of something you times it by .5 or 1/2 and then subtract 3 from that

PLEASE ANSWER WORTH 99 POINTS

Each serving of a cereal is 80 calories. Which expression can be used to find the number of calories in 3 servings?
80 x 3
80 divided by 3
3 divided by 80
80 - 3

Answers

B. 80 x 3 if it is three times you would put 80 in three times or just multiply it by 3

80(3)=240
80/3=26.66
3/80=0.0375
80-3=77

Loretta and her family are going on vacation. Their destination is 610 miles from their home. Loretta is going to share some of the driving with her dad. Her average speed while driving is 55 mph and her dad's average speed while driving is 65 mph. The plan is for Loretta to drive for this first 4 hours of the trip and her dad to drive for the remainder of the trip

Answers

Loretta:
Average driving speed = 55 mph
Time = 4 hours
Distance traveled = 55*4 = 220 miles

Dad:
Average driving speed = 65 mph
Let x =  hours driven
Distance traveled = 65x miles

The length of the trip is 610 miles, therefore
65x + 220 = 610
65x = 390
x = 6  hours

Answer: Loretta's dad drove for 6 hours.

Final answer:

To determine how long Loretta's father drives, we deduct the distance Loretta drives (220 miles) from the total trip distance, then divide the remainder (390 miles) by her father's average speed (65 mph), resulting in 6 hours of driving time for her father. The total trip time is 10 hours.

Explanation:

The question is about calculating travel times and distances using average speed. Loretta and her family are traveling 610 miles with Loretta driving the first 4 hours of the trip at 55 mph and her dad driving the remainder at 65 mph. To calculate the distance Loretta drives, we multiply her driving time by her average speed (4 hours * 55 mph = 220 miles). Then, we subtract that distance from the total trip distance to find out how far her dad drives (610 miles - 220 miles = 390 miles). To calculate how long her dad drives, we divide his driving distance by his average speed (390 miles / 65 mph).

Now let's solve the dad's driving time:
390 miles / 65 mph = 6 hours. So, Loretta's dad would drive for 6 hours. The total driving time for the trip is the sum of both Loretta's time and her dad's time: 4 hours + 6 hours = 10 hours.

A skater has a weight of 500-N. The skate blades are in contact with the ice over an area of 0.001m^2.what is the pressure exerted on the ice by the skater

Answers

Final answer:

The pressure exerted on the ice by the skater, who weighs 500-N and has blade contact area of 0.001 m², is 500,000 Pa (Pascals).

Explanation:

The question is asking about the pressure exerted on the ice by a skater. To find the pressure, we use the formula P = F/A, where P is the pressure, F is the force, and A is the area in contact with the ice.

If the skater weighs 500-N and is gliding on one skate blade, which has an area of contact of 0.001 m2, the pressure is calculated by dividing the weight by the area. Using the provided data from the similar situation of a skater with a weight of 736 N and a blade area of 5.0 × 10-4 m2, we would calculate the pressure using these figures. However, we need to calculate the pressure using the data specific to this skater, with a weight of 500-N and a blade area of 0.001 m2.

The pressure exerted on the ice can be calculated as:

P = 500 N / 0.001 m2 = 500,000 Pa (Pascals)

∠C and ​ ∠D ​ are vertical angles with m∠C=−2x+90 and m∠D=x−30 .



What is m∠D?

Answers

check the picture below.

a stores plans to mark down all backpacks by 40%. James wants to purchase a backpack that is currently priced for 55 Dollar. How much will james save if he buys the backpack after the marks it down? A) $22 B)$33 C) 2145 D) 2200

Answers

The answer is $22. I hope this helps :)
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