Guys I really need help this is due and I have been on this question for 2 hours.
5. Reflection: Marissa wants to describe the relationship between the scale factor and perimeter of an image and its pre-image and between the scale factor and area of an image and its pre-image. What should she say about the relationship between the scale factor and perimeter of an image and its pre-image? What should she say about the relationship between the scale factor and the area of an image and its pre-image?
Answers
Answer:
see below
Step-by-step explanation:
Answer in your own words:
Scale factor = Dimensions of the new shape ÷ Dimensions of the original shape. Which can also be used to calculate the dimensions of the new figure or the original figure by simply substituting the values in the same formula.
• The scale factor of a dilated figure is denoted by 'r' or 'k'.
• If the scale factor is more than 1 (k > 1), the image is enlarged.
• If the scale factor is less than 1 (0< k <1), the image is contracted.
• If the scale factor is 1 (k = 1), the image remains the same.
• The scale factor cannot be zero.
Scale factor = k
Pre-image lengths: a, b
(perimeter = 2a + 2b)
Image lengths: ka, kb
(perimeter = 2ka + 2 kb or k (2a + 2b))
Marissa needs to say that the perimeter of the image is the perimeter of the pre-image times the same scale factor.
area of the pre-image = ab
area of the image = (ka)(kb) or k^2 (ab) (The area of the image is the area of the preimage times the square of the scale factor)
Scale factor 5 (then repeat it with scale factor 6)
length of the pre-image = 3 x 4
(perimeter = 2 (3 + 4) = 2(7) = 14)
length of the image = (3x5) x (4x5) = 15 x 20= 300
(perimeter = 2 (15 + 20) = 2 (35) = 70 or 14 x 5 = 70
area of the pre-image = 3 x 4 = 12
area of the image = 15 x 20 = 300
12 x (5^2) = 12 x 25 = 300
Related Questions
The Murphy family is on a road trip. On the first day, they traveled 30% of their total distance. On the second day, they traveled another 1 4of the total distance. What fraction of the total distance do they have left after
Answers
Answer:
5/12
Step-by-step explanation:
Total distance travelled = 30% + 1/4
To add these numbers, convert 30% to fraction
30% = 1/3
1/3 + 1/4 = 7/12
Remaining distance = 1 - 7/12 = 5/12
Find the real solutions to the nearest hundredth.
Answers
Answer:
14: x=-3.00 15: x=-0.41
Step-by-step explanation:
(x+5)^4=16
x+5=16^(1/4)
x+5=2
x=-3
(x-2)^3=-14
x-2=(-14)^(1/3)
x-2=-2.41
x=-0.41
3. What is the perimeter of the figure below?
Answers
Answer:38
Step-by-step explanation:
Answer:
It is the third option.
Step-by-step explanation:
Also Math-way is a good place to answer questions like these as well.
What is the meaning of ‘!’ In math and how do I use it?
Answers
In math, the '!' sign are used in factorial. Factorial is multiplications on numbers itself and with another numbers that less than the number itself. Example :
5! =5x4x3x2x1 or nx(n-1)x(n-2)...2x1
Describe two methods that can be used to find the area of the composite figure. Doing 45 pts and brainliest.
Answers
1.) Divide the composite figure into a square on the left, a rectangle in the middle, and a square on the right by drawing two vertical lines through the figure. Then calculate the individual areas of the shapes and add them all together.
2.) Divide the composite figure into a square on the top and a rectangle on the bottom by drawing a horizontal line through the figure. Then calculate the individual areas of the shapes and add them all together.
Hope this helps, and have a wonderful day!
HELP PLEASE ANYONE I’m so lost
Answers
Answer:
x =4
Step-by-step explanation:
so pretty much you're give the values for theta and phi, so all you have to do is insert the values in their corresponding position and simplify it. After the simplification process, the answer should be no less or more than 4.
Answer:
the answer is 4
Step-by-step explanation:
by simplification;
=》
[tex] \frac{a + b}{a - b} [/tex]
** putting the value of a and b :-
=》
[tex] \frac{5 + 3}{5 - 3} [/tex]
=》
[tex] \frac{8}{2} [/tex]
=》
[tex]4[/tex]
Factor.
3y^2 + 5y - 2
If you can, please give me an explanation, I'm confused about how to do this.
(Example of how the answer would look like: (5x+3)(x+1))
Answers
3y^2+5y-2
3 is a prime number so to split it up you would put 3y in one parentheses and y in the other. at this point it will look like this
(3y )(y )
now, you need to figure out what your signs would be (+ or -) because the second sign in the equation is a negative, your signs would be one + and one - you can decide where to put them until you figure out your two factors. in this case you need to figure out 2 numbers that multiply to 5 and add up to 2. you might think this is impossible, but since the 3 is there, one of those numbers can be multiplied by three. this is your answer:
(3y-1)(y+2)
comment on the answer if you have any more questions. mark me brainliest if you can!!
please help. due today
Answers
Answer:
x=3
Step-by-step explanation:
The problem can be re-written as :
[tex] \sqrt{3^{x} } \div \sqrt{3} = 3[/tex]
This is because x to the power of 1/2 is the same as the square of x.
multiply both sides by sqrt3
[tex] \sqrt{3^{x} } = 3 \sqrt{3} [/tex]
square both sides
[tex]3 ^{x} = (3)^{2} ( \sqrt{3} )^{2} [/tex]
simplify
[tex]3 ^{x} = 9 \times 3[/tex]
3 to the power of x is equal to 27
3 cubed (to the power of 3) is 27
so x is equal to 3.
hope i helped, and good luck :)
help me pls ❤️❤️❤️ ty to the person who decides to help ❤️
Answers
Answer:
8/5
Step-by-step explanation:
this is a slope formula which formats y=mx+b
m being the slope
and b being the y-intercept
so no need to look far, and no need to solve anything but 8/5 would be your y-intercept
:)) have a great day!
What number replaces C to complete the square of the equation below
Find the solution to problem seven using the complete square method
Answers
Answer:
c= 25, solutions: x = 3, x= -13
Step-by-step explanation:
(10/2) ^2 = 25
(x+5)^2 = 64
The roof of Mr. Thompson’s house is blank feet high to climb on top of his house healing a 13 foot ladder against the roof of his house in place is the base of the latter 5 feet from the house
Answers
Answer:
12 i think
Step-by-step explanation:
pls help meh
6th grade math
Answers
Answer:
1,728%
Step-by-step explanation:
multiply baby
Use the discriminant to determine the number of solutions and types of solutions for the quadratic equation, below. Show your work when calculating the discriminant for full credit. Then answer all four questions in the box. (6 points)
a^2-5a=6
Answers
Answer:
6
Step-by-step explanation:
1+2
Please help
filler filler filler
Answers
Answer:
1+2=3 is answer
Step-by-step explanation:
so what help u need?
please help!!! A pair of parallel lines are reflected. Which of these could be the result? thankyou!! (will mark brainliest
Answers
Answer:
C
Step-by-step explanation:
parallel lines never cross
A kickball has a radius of 7 inches. Calculate the volume of the kickball. Use 3.14 to for . Volume of a sphere can be calculated by the formula: V=4/3 r^3 (round to the nearest whole number)
Answers
Answer:
V = 205 in^3 to the nearest whole number
Step-by-step explanation:
V = 4/3 π r^3
Plugging in the given information:
V = 4/3 * 3.14 * 7^2
V = 205.147.
Select an equation of a parabola that has a vertex at (2,-1) and a zero at x=3 .
A. y=x² -4x+ 5
B. y=x² -4x + 3
C. y=x² + 4x -21
D. y=x² + 4x +3
Answers
How do I find the missing side length for 30 - 60 - 90 method as a radical in simplest form?
Answers
Answer:
Step-by-step explanation:
see the image below
Step-by-step explanation:
The side that is adjacent to 60 degree and 90 degree is the shortest side.
If u know the hypoutnese you can divide it by 2 to find the shortest side. for example if the hypotenuse is 10 then the shortest side is 5
If you know the other leg you can simply just remove the entire radical and just keep the whole number to find the length of the shortest side.
The side that his the adjacent to the 30 degree and 90 degree angle is the second longest side of the triangle.
If u know the shortest side, just multiply the radical
[tex] \sqrt{3} [/tex]
to the whole number.
If you know the hypotunese, divide the hypotenuse by 2 and then multiply the radical to find the length of the second shortest side
Finally, the hypotunese is the largest side. It is the slanted side length that is adjacent to the 30 and 60 triangle.
If you know the shortest side, just multiply the side length by 2 to get the hypotenuse.
If you know the other leg, remove the radical and keep the who the number and multiply the whole number by 2.
E.x if the second longest side length is
[tex]5 \sqrt{3} [/tex]
Remove the radical so it becomes
[tex]5[/tex]
then multiply it by two to find the hypotunese.
[tex]5 \times 2 = 10[/tex]
1) Mike's sister, Kellie, is 4 years older than he is. Let m be Mike's age and let k be Kellie's age. ) Complete the table to show Mike's age and Kellie's age in different years. compete the table to show Mike's age and Kellie's age in different years.
Answers
The table be like
Mike age kellie age
10 14
15 19
20 24
25 29
Calculation of the ages:Since Mike's sister, Kellie, is 4 years older than he is
And, Let m be Mike's age and let k be Kellie's age.
So here the equation be like
k = m + 4
Based on this we can compute the ages and fill the table
learn more about table here: https://brainly.com/question/16299322
Pls help me ASAP thank you!!
Answers
8(9f + 5)
72f + 40
Solution
72f + 40
can someone help me plssssss
Answers
Answer:
16.5
Step-by-step explanation:
Pleaseee helppp answer correctly !!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!
Answers
Divide Rs 36 between Avni and Namitha in the ratio of 5:4. Find how much each will get
Answers
Step-by-step explanation:
Avni's ratio = 5/9
Money of Avni = 36*5/9= 20
Namitha's ratio= 4/9
Money of namitha = 36*4/9= 16
Need help please hurry
Answers
9514 1404 393
Answer:
x = 20°
Step-by-step explanation:
For questions like this, it is helpful to remember that an exterior angle is equal to the sum of the remote interior angles.
110° = 2x + 70°
40° = 2x
20° = x
_____
Similarly, ...
y = x + 70° = 20° +70°
y = 90°
What is the slope of the line on the graph?
Answers
Answer:
87
Step-by-step explanation: im genius at math
Answer:
I think the slope would be (2,4)
Step-by-step explanation:
Becuse it rises by 2 and runs by 4
Which equation represents circle A?
(x – 4)2 + (y + 5)2 = 12
(x + 4)2 + (y – 5)2 = 12
(x – 4)2 + (y + 5)2 = 36
(x + 4)2 + (y – 5)2 = 36
Answers
Answer:
c on edge
Step-by-step explanation:
just took the quiz
The equation representing the circle A is (x – 4)² + (y + 5)² = 36.
What is circle?A circle is a spherical shape without boundaries or edges. A circle is a closed, curved object with two dimensions in geometry.
The general equation of circle is given by equation
( x - h )² + ( y - k )² = r²
Where, ( h, k ) is the centre and 'r' is the radius.
As, the circle has a shift of 4 units on the +x axis.
The circle has a shift of the 5 units on the -y axis.
As, the circle has a radius of 6 units from the graph.
So, (h,k) = (4, -5).
Substitute the values of (h,k) in the general equation of the circle.
( x - 4 )² + ( y - (-5) )² = 6²
( x - 4 )² + ( y + 5 )² = 36
Therefore, the equation of circle becomes ( x - 4 )² + ( y + 5 )² = 36.
To know more about the general form of equation of circle, here
https://brainly.com/question/1506955
#SPJ2
What is this distance between the following points? Use the distance formula.
Choices are 6, 8, (square root of) 72, or 79
Answers
Maria Contrerras earned $53,000 in taxable income. She figured her tax from the single taxpayer table above.
1. Find her earned income level.
2. Entered the base amount. = $
3. Found the amount over $ = $
4. Multiplied line 3 by 25% = $
5. Added Lines 2 and 4 = $
Answers
Answer:
1:31,850-77100
2:4389
3:31850=21150
4:5287.50
5:9673.50
Step-by-step explanation:
Just basic math yall
According to this partial W-2 form, how much money was paid in FICA taxes?
A)$497.13
B)$2622.80
C)$5639.88
D)$7268.42
Answers
Answer:
2622.80
Step-by-step explanation:
I just took the test and made a 100%
3x - 6 less than or equal to -3 on a graph