please help thank you.

Answers

Answer 1

You get the same figure if you reflect it across a horizontal or vertical line through its center (reflectional symmetry).

You get the same figure if you rotate it 180° (rotational symmetry)

Each point corresponds to another equidistant from the center on a line through the center (point symmetry).

The 4th selection is appropriate.

Related Questions

In order to solve the following system of equations by addition, which of the following could you do before adding the equations so that one variable will be eliminated when you add them? 2x-4y=5 6x-3y=10 A.Multiply the top equation by -3 and the bottom equation by 2. B.Multiply the top equation by -2. C.Multiply the top equation by -3. D.Multiply the top equation by 3 and the bottom equation by 4.

Answers

C should be the answer. Why?
2x - 4y = 5
6x - 3y = 10
Multiply by -3 to the top equation will eliminate the x variable in the system
-3(2x - 4y = 5)
6x - 3y = 10
==> -6x + 12y = -15
6x - 3y = 10
adding top with bottom will eliminate the x
==> -6x + 6x = 0, 12y + (-3y) = 9y, -15 + 10 = -5

Answer:

c is correct

Step-by-step explanation:

A 60 cm rope is tied to the handle of a bucket which is then whirled in a vertical circle.

Answers

the complete question in the attached figure

a) we know that
T - mg = mv^2/r
The net forces equal the mass times the centripetal acceleration
So
T=50 N
m=3 kg
r=0.60 m
v = sqrt((T-mg)r/m) = sqrt((50-(3*9.8))*(.60)/3) = 2.03 m/s

the answer part a) is 2.03 m/s

b) At the top the equation becomes T+mg=mv^2/r
but here the critical speed occurs when T = 0
so the critical speed is v = sqrt(rg) = sqrt (.60*9.80) = 2.42 m/s

the answer part b) is 2.42 m/s

Final answer:

The scenario described in the question involves using a rope to whirl a bucket in a vertical circle. This relates to the physics concepts of centripetal force, tension in the rope, and gravity. The tension in the rope provides the centripetal force needed for the curved path of the bucket, and the scenario implies a constant speed and a counterbalance between tension and gravity at the highest point of the circle.

Explanation:

The question involves a principle of physics known as centripetal force, which is the force that makes a body follow a curved path. Its direction is always orthogonal to the motion of the body, towards the fixed point of the instantaneous center of curvature of the path.

In this case, the 60 cm rope tied to the bucket and whirled in a vertical circle becomes a system where the bucket, the force of gravity, and the tension in the rope all play a part. When the bucket is whirled, it experiences a centripetal force that keeps it moving in a circle. This force comes from the tension in the rope, which always pulls the bucket towards the center of the circle (the hand holding the rope). Hence, there are two key forces in this scenario - the force of gravity, pulling the bucket downward, and the tension in the rope providing the centripetal force.

Since the question does not state otherwise, we can reasonably assume that the movement is steady, implying the speed of the bucket is constant. In such a case, the swinging bucket will rise to a certain point, where the tension in the rope and the gravity cancel each other, causing the bucket to start falling back to the other side, therefore, forming the vertical circular path.

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What is 1/10 of an income of $97.50?
$9.75
$0.98
$975.00
$9,750.00

Answers

The answer is $9.75. Let's present 1/10 as percentage: 1/10 = (1*10)/(10*10) = 10/100 = 10%. Now, $97.50 is 100%. x is 10%. Make the proportion: $97.50 : 100% = x : 10%. Cross the products: 100% * x = $97.50 * 10%. Find x: 100 * x = $975.00. x = $975.00 / 100. x = $9.75.

Te correct answer is 9,75

In a box of 500 colored balls, 75 are black, 150 are green, 175 are red, 70 are white, and 30 are blue. what are the probabilities of selecting a ball of each color.

Answers

if we want to select a ball of each colour we have to extract 175+150+75+70+1=471 balls

P=471/500 is the answer

Estimate the circumference of a circle that has a diameter of 13 yards.
Show the result in yards.

Answers

Circumference= 2πr

Radius= diameter ÷ 2

C= 2(3.14)(13/2)
divide 2 into 13 first
C= 2(3.14)(6.5)
multiply
C= 40.82 yards

ANSWER:
The circumference is 40.82 yards, estimated to 41 yards.

Hope this helps! :)

Final answer:

To estimate the circumference of a circle with a diameter of 13 yards, use the formula C = π * d where π is approximated as 3.14. The estimated circumference is 40.82 yards.

Explanation:

To estimate the circumference of a circle that has a diameter of 13 yards, you can use the formula for the circumference of a circle, which is π times the diameter (C = π * d). The value of π (pi) can be rounded to 3.14 for convenience in calculation. Using this rounded value of π:

Circumference = 3.14 * 13 yards= 40.82 yards

Therefore, the estimated circumference of the circle is 40.82 yards.

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. Release your mouse button when the item is place. If you change your mind, drag the item to the trashcan. Click the trashcan to clear all your answers.

Divide the following polynomial and then place the answer in the proper location on the grid. Write your answer in order of descending powers of y.

(y 3 - y 2 + y + 3) ÷ (y + 1)

THE ANSWER IS:
y^2-2y+3

The reason I included the correct answer is that this question has not been asked yet and I figured that someone might need to know this. Feel free to answer the question and get the points! :)

Answers

Brainly is meant for other people to answer questions, not the question asker, but this is okay.
Correct answer.
y^2-2y+3

Answer:

y²-2y+3

Step-by-step explanation:

We write the dividend, y³-y²+y+3, under the box and the divisor, y+1, to the left of the box.

We first divide y³ by y; this is y². We write this above the box, over -y². We multiply the divisor by y²:

y²(y+1) = y³+y²

This goes under the divisor. We then subtract:

(y³-y²)-(y³+y²) = -2y². We then bring down the next term, y; this gives us -2y²+y.

We then divide -2y² by y; this is -2y. This goes above the box beside the y² in the quotient. We then multiply the divisor by -2y:

-2y(y+1) = -2y²-2y

We now subtract:

(-2y²+y)-(-2y²-2y) = 3y. We bring down the last term, 3; this gives us 3y+3. We divide 3y by y; this is 3. This goes beside the -2y in the quotient. We then multiply this by the divisor:

3(y+1) = 3y+3. We then subtract: (3y+3)-(3y+3) = 0

This makes the quotient y²-2y+3.

write an equation that represents the situation in the table?

x: y:
6 122
10 170
15 230
28 336

Answers

You can almost always write a cubic equation to match 4 arbitrary points. Here, that would be
.. y = -0.00971251x^3 +0.301088x^2 +9.08625x +58.7413

This function agrees with the table when rounded to 3 decimal places.

Need quick help please?! Using the Angle Bisector Theorem solve for x.
Show all work.

Answers

From the angle bisector theorem;
15/3= (4x+1)/5
solving for x;
4x+1 = 25
4x= 24
x= 6

Using the Angle Bisector Theorem solve for x.

The "Angle Bisector" Theorem says that an angle bisector of a triangle will divide the opposite side into two segments that are proportional to the other two sides of the triangle.

As, we see the figure, AD bisects angle A

So, Applying Angle Bisector theorem, we get,

[tex] \frac{AC}{CD} =\frac{AB}{BD} [/tex]

[tex] \frac{AC=15}{CD=3} =\frac{AB=(4x+1)}{BD=5} [/tex]

[tex] \frac{15}{3} =\frac{4x+1}{5} [/tex]

15 divide by 3 gives 5

So, we have

5=[tex] \frac{4x+1}{5} [/tex]

To get rid of fractions let us multiply by 5 on both sides

5*5=[tex] \frac{5*(4x+1)}{5} [/tex]

25=[tex] \frac{1*(4x+1)}{1} [/tex]

25=4x+1

To solve for x, let us subtract 1 from both sides

25-1=4x+1-1

24=4x+0

Or, 4x=24

To solve for x, let us divide by 4 on both sides

[tex] \frac{4}{4}x=\frac{24}{4} [/tex]

x=6

Answer: x=6

What is the solution to the inequality: 10x + 18 < -2?

Answers

Thx to my cousin I am able to do these inequalities easily. If my math is correct subtract 18 from -2, divide by 10 and it will give u -2

Answer: x<−2

(just had a test)

hope this helps

Please help!!
What transformations of the parent function f(x) = |x| should be made to graph, f(x) = - |x| + 5?

Answers

To solve this problem, you must follow these steps:

1. Multiply the graph by -1 (That will reflect the function towards the -y axis).

2. Add 5. That will move the function upwards and you will obtain y=5 as its cut point with the y axis.

You can know the graph of a function by knowing the graph of the function "father" and applying the corresponding transformations, until turning it into the function studied.

The graph of the function f(x)=|x| has the shape of a cone that passes through the point (0,0).

Please help me. Thank you very much.

Answers

to the left is negaitive up is positive

so part 1 = D

part 2 = (-2,9) answer is C

what is equivalent to (3^6/y^-5)^2

Answers

I believe that the answer is 1/5. I hope that this answer helps!

What is the domain of the square root function graphed below?

Answers

Answer:

x ≥ 0

Step-by-step explanation:

The function is graphed starting at 0 and going up the positive x-axis.

These are numbers that are greater than 0; thus the domain is greater than or equal to 0, or

x ≥ 0

The domain of the function is (d) x >= 0

How to determine the domain?

From the graph, we have the following highlight:

The x values of the function starts at 0 and extends the right0 is inclusive of the x values

Since 0 is inclusive, we make use of the greater than or equal to inequality

Hence, the domain of the function is (d) x >= 0

Answers

You are lacking the choices, but any point that you plot that falls in that shaded region would work just fine.

Perform the requested operation or operations.

f(x) = 7x + 6, g(x) = 4x^2

Find (f + g)(x). (5 points)

7x + 6 + 4x^2

28x3 + 24x

7x + 6 - 4x^2

seven x plus six divided by four x squared.

Answers

Given:
f(x) = 7x +6
g(x) = 4x²

Therefore
(f + g)(x) = 7x + 6 + 4x²

Answer: 7x + 6 + 4x²

Table a shows the average low temperatures recorded in a city during the first three months of the year. table b shows the average low temperatures recorded in the city during the next four months of the year. what is the difference in the medians of the two sets of data?
a.1
b.4
c.5
d.13 12)

Answers

I would have to see the two sets of data to answer this question.

This is not enough information, sorry

What is the value of z in the equation z − 3 = 22? 7.33 19 25 66

Answers

The answer would be 25...

Think about it, switch 25 with z

Answer 25 - 3 = 22

Correct

Answer:

The answer is 25

Step-by-step explanation:

The 1997 value of an object was $9500. In 2012, it was worth $5000. The annual percent of decay has been constant. What is the annual percent of decay? A) 1.19% B) 2.19% C) 3.19% D) 4.19%

Answers

Hello,

Here is your answer:

The proper answer to this question is option D "4.19%".

Your answer is D.

If you need anymore help feel free to ask me!

Hope this helps!

Answer:

The answer is D.

Step-by-step explanation:

If the object starts with a value [tex]V_0[/tex], and a annual percent of decay d, after a year the value will be

[tex]V_1 = V_0 * d[/tex]

after 2 years, taking now [tex]V_1[/tex] as the starting value

[tex]V_2 = V_1 * d = V_0 * d * d [/tex]

[tex]V_2 = V_0 * d^2 [/tex]

and so on, after n years the value will be:

[tex]V_n = V_0 * d^n[/tex]

Now, in 1997 the value was $9500, in 2012 the value was $5000. Between 1997 and 2012 there are 15 years, so, our equation will be:

[tex] \$5000 = \$ 9500 * d^{15}[/tex]

Working it a little

[tex] \frac{\$5000}{\$ 9500} = d^{15}[/tex]

[tex] (\frac{\$5000}{\$ 9500})^{1/15} = d[/tex]

[tex] (0.5263})^{1/15} = d[/tex]

[tex] 0.9581 = d[/tex]

This mean that, after a year, the value will be at 95.81 %, this is, a decay rate of 4.19%.

A(n) _ shows you the schedule of payments on a loan and the total interest and payments at the end of the loan.
A. payoff table
B. amortization table
C. payment table
D. interest table

Secured debts must have _.
A. collateral
B. real property
C. low interest rates
D. certified lenders

You are purchasing a car for $12,985.00 with the help of your parents. How much interest is saved in the first month by you using their good credit rating compared to your fair credit rating?
A. $14.61
B. $54.15
C. $15.15
D. $69.25
(Secured APR for good credit is 5.00%, and for the unsecured APR it is 5.90%. Secured APR for fair credit is 6.40%, and for unsecured APR it is 7.25%.)

Answers

B. amortization table

A. collateral

C. $15.15
(12985) * (0.014) * 1/12 = 15.14916666 = $15.15

Answer: 3.A

Step-by-step explanation: At the exallent rating

you plan to take $450 U.S on a trip to South Africa. How many rands is this if one U.S dollar equals 3.70 rands ?

822 rands
1,216 rands
1,665 rands
8,222 rands

Answers

Multiply 450 and 3.70 to get 1,665 rands

Given:

one U.S dollar equals 3.70 rands. To find how many rands does 450 U.S dollars equal to, we need to multiply 450 with 3.70

Solution:

[tex] 1 \; U.S \; dollars \; = \; 3.70 \; rands\\ \\ 450\; U.S\; dollars= 450 \times 3.7 \; rands=1665 \; rands [/tex]

Conclusion:

1665 rands equals $450.

it took team tool bella 2 1/3 hours to hike 4 2/3 miles. whats their average speed in mph

Answers

Divide # miles by # of hours to find average mph.

=4 2/3 ÷ 2 1/3
change to improper fractions
= 14/3 ÷ 7/3
multiply by reciprocal/inverses of 7/3
= 14/3 * 3/7
= (14*3)/(3*7)
= 42/21
= 2

Hope this helps! :)

What is the y-intercept of the line that is the perpendicular bisector of the segment joining (-3,-4) and (5,10)? express you answer as a mixed number?

Answers

My geometry program shows the equation of the bisector to be
.. 4x +7y = 25
When x = 0, the y-value is 25/7 = 3 4/7

The y-intercept is 3 4/7.

Which is a possible expression for the series
–7 + 12 –17 +22 –27

Answers

First, you have to see the behavior of the series: it has a negative number, then a positive number with a 5 addd (7+5=12), and this is repeated with the others values. Each termn has a 5 added. In this case, as there is negatives values alternated, the serie will have the termn (-1)^n. Then, we have:

a(n)=(-1)^n[ a + (n-1)d ]
a(n)=(-1)^n[ (7) + (n-1)(5) ]
a(n)=(-1)^n( 5n + 2 )

A possible expression for the serie –7 + 12 –17 +22 –27, is:

∑5n=(−1)^n(2+5n)

Charise is buying 6 packets of seeds to plant in her garden Each packet of seeds is $2 19, Estimate her total cost by rounding Is the estimate an underestimate or an overestimate?

Answers

the estimate is an over estimate because 2.19 time 6 equals 13.14 and you sya 15 dollors so so it it is an over estimate

Answer:

the estimate is an over estimate because 2.19 time 6 equals 13.14 and you sya 15 dollors so so it is an over estimate

Step-by-step explanation

i hope this helps i hate math

The dimensions of a triangle are shown below. If the height of the triangle is increased by a factor of 4, which statement will be true about the area of the triangle?

Answers

The area of the triangle will increase by 4^2 . That is by a factor of 16.

Answer:

The area will increase by a factor of 4

Step-by-step explanation:

4 * 4 = 16

IT'S UP THERE STEVE (Like on family feud)

A wire 320 in. long is cut into two pieces. one piece is formed into a square and the other into a circle. if the two figures have the same area, what are the lengths of the two pieces of wire (to the nearest tenth of an inch)? circle in square in

Answers

The area of a circle can be computed from the circumference (c) as
.. Acircle = c^2/(4π)

The area of a square can be computed from its perimeter (p) as
.. Asquare = (p/4)^2 = p^2/16

These are equal when
.. Acircle = Asquare
.. c^2/(4π) = p^2/16
.. c^2/p^2 = (4π)/16
.. c/p = (√π)/2

The total length is 320 inches, so ...
.. wire for circle = ((√π)/2)/(1 +(√π)/2)*320 in ≈ 150.3 in
.. wire for square = 320 in - wire for circle ≈ 169.7 in

_____
In the graph, (x, y) represents (circle wire, square wire).

Final answer:

The lengths of the two pieces of wire, when one is formed into a square and the other into a circle with equal areas, are approximately 186.3 inches and 133.7 inches respectively.

Explanation:

To solve this problem, we first need to understand that the total perimeter of both the square and the circle made from the wire lengths equal to the original wire length, which is 320 inches. Suppose the length of the wire used for the square is 'a' and the length for the circle is 'b'. So, 'a + b = 320' inches.

Given that, the areas of both the square and the circle are equal. The area of a square is side^2 and the side of our square will be 'a/4' (since a square has four equal sides) and the area of a circle is πr^2, with the circumference being 2πr or 'b' in this case, so the radius is 'b / (2π)'.

Setting these two areas equal gives us the equation '(a/4)^2 = π * (b/ (2π))^2'. Solving this system of equations, we find that 'a' is approximately 186.3 inches and 'b' is approximately 133.7 inches.

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The purple shape is a dilation of the black shape. What is the scale factor of the dilation?

Answers

The answer is 1/2. The purple shape is half the size of the black shape.

Answer:

Scale factor = [tex] \frac{1}{2} [/tex]

Explanation:

The purple shape is a dilation of the black shape.

A dilation is a transformation that produces an image that is the same shape as the original, but is a different size.

Now findd the scale factor.

If given two shapes and need to find the scale factor, We must know which one was the original and which one is the image or the new shape. Then we need to know the length of corresponding sides and set them up in a ratio like so:

Scale Factor = [tex] \frac{purple}{black} [/tex]

Scale factor = [tex] \frac{10}{20} = \frac{1}{2} [/tex]

Find the distance from A to C.

Answers

Answer:

√74

Step-by-step explanation:

a^2 + b^2 = c^2

7^2 + 5^2 = c^2

49 + 25 = c^2

74 = c^2

√74 = √c^2

In this fulcrum, the weights are perfectly balanced. How far must the fulcrum be located from the 40 lb. weight if the bar is 11 feet long? x (to the nearest tenth) =

Answers

the complete question in the attached figure

we know that
if the weights are perfectly balanced
40*(x)=50*(11-x)
40x=550-50x------------> 50x+40x=550--------------> x=6.11

x=6.1 ft

the answer is 6.1 ft

Answer:

[tex]x=6.11 feet[/tex]

Step-by-step explanation:

Given that in a fulcrum weights are perfectly balanced.

One side 40 lb weight is there and another side 50 lb weight is given

Let x be the length of 40 lb weight from fulcrum. Then 50 lbs is at a distance of 11-x.

Then we have since weights are perfectly balanced

[tex]40x = 50(11-x)\\90x=550\\x=6.111[/tex]

Thus we get [tex]x=6.11[/tex]feet

What is the 30th term of the arithmetic series 4, 7, 10, …? 88 89?

Answers

a1 = 4; a2 = 7; a3 = 10
d = a2 - a1 -> d = 7 - 4 = 3
an = a1 + (n-1) d -> an = 4 + (n-1) * 3 = 4 + 3n - 3n + 1
[an = 3n + 1]
a30 = 3 * 30 + 1 = 90 + 1 = 91
Answer: a30 = 91

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