D. If the scale factor for the dilation of the figure is 0.9, then the dilation is an enlargement
Answers
Answer:
Option C.
Step-by-step explanation:
Suppose that we have a point (x, y)
If we do a dilation with a center in the origin of scale factor K, then the new coordinates of our point will be:
(k*x, k*y)
If k > 1, we have an elargement.
if 0 < k < 1, we have the opposite case.
Now, suppose that one random vertex of the preimage is A (a, b)
Then after we do the dilation, the new coordinate of this vertex will be:
A' = (k*a, k*b) (this is, the original coordinates multiplied by the scale factor)
And this will happen for all points actually, so particularly the corresponding coordinates of the vertices of the image are the vertices of the preimage multiplied by the scale factor.
Then the correct option is C
Related Questions
a rectangular piece of cardboard measuring 30 inches by 20 inches is made into an open box by first cutting an identical square from each corner and then folding up the sides. The edge of each identical square is a whole number.
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If the wholesale price of an item is $250 and the markup is 20%, find the retail price of the item. Please explain. Thank you.
Answers
So $300
Answer: 300
Step-by-step explanation:
20% of $250 is $50
So $300
Solve this question for brainlest
Answers
Answer:
multiply is your answer
mark brainliest please :D
Please I need help. The Median of a data set is 100. Which statement about the data set must be true?
A. The data set has an average of 100
B. Half the data values are greater than 100.
C. The minimum value is 80 and the maximum value is 120
D. Only one of the data points in the data set has a value of 100
Answers
Answer:The mean, or average, has the property that distances from the mean to the individual ... The measure of center where half the values of the data set lie above this ... The maximum value of a data set is 200 and the minimum value is 80. ... 25 b. 24 c. 100 d. 5 e. 120. e. 120. A factorial is the product of all number from 1 to n.
Step-by-step explanation:
Answer:
B. Half the data values are greater than 100.
Step-by-step explanation:
The median is just another way to say the number in the middle. So if in the whole group of numbers 100 is in the middle, that means that half of the numbers will be bigger than 100, and half of the numbers will be smaller than 100.
Please help I don’t understand
Answers
Answer:
6:5
Step-by-step explanation:
Step 1: we need to match the b portions of each ration, use a lcm calculator, we see that the least common factor of 1 and 2 is 2
Step 2: For our a:b ratio of 3:1 we need to multiply each portion of the ration by 2 divided by 1 is 2
2 times 3:2 times 1 = 6: 2 our new a b ratio
Step 3: for our bc ratio of 2: 5 we need to multiply each portion of the ratio by 2 divided by 2 equals 1
1 times 2: 1 times 5 = 2:5 our new b:c ratio
since the b portions of each ratio match, we just take a: c = 6:5
GOOD LUCK!
pls help me :( Find the value of x. Round to the
nearest tenth.
Answers
Answer:
11.3
Step-by-step explanation:
Set up your equation:
a² + b² = c²
Plug in your values:
a² + 4² = 12²
Get a² by itself:
a² = 12² - 4²
Square your numbers and subtract:
a² = 144 - 16
a² = 128
Find the square root of both sides:
√a² = √128
a = 11.3
The radius of a circle is 18 inches. What is the circle's area?
Answers
Answer:
1017.88 inches
Step-by-step explanation:
Area = πr2 = π x 182 ≈ 1017.87602
The range of a data set is 18 . If the smallest number in the set is 9 what is the largest?
Answers
Answer:
So you start off with 9, we know that the range is 18, so you do 9 + 18 = 27, So the largest number in the set would be 27 .
if you want to build a ramp that is 20 ft long and 5ft tall what is the angle of elevation? draw a diagram to model the situation
Answers
Answer:
Step-by-step explanation:
64.16
Help me with this please
Answers
In a walking competition, Marlinda was 15m ahead of Sandra Evliani. Marlinda steps 1m each time Sandra Elviani’s foot steps 0.8m. How many steps does Sandra Elviani have to make to match Marlinda?
Answers
Answer:
Given that in a walking competition, Marlinda was 15m ahead of Sandra Evliani, and Marlinda steps 1m each time Sandra Elviani's foot steps 0.8m, to determine how many steps does Sandra Elviani have to make to match Marlinda, the following calculation must be performed:
Since Sandra Elviani walks 0.8 meters for every 1 meter that Marlinda walks, and that she has an advantage of 15 meters in the competition, it is impossible that at that rate Sandra can reach her. This is so because for each step of Marlinda, Sandra will be 0.2 meters behind her, increasing the distance (1-0.8).
I need help which is it?
Answers
C - 29 Inch as if you go up of 7.
which expression can be used to find the surface area of the following triangular prism. choose 1 answer.
Answers
Answer:
A is in fact correct.
Step-by-step explanation:
Helpppppppppppppppppppppppppppppppppp
Easyyy
Answers
Answer:
duuuuuuude if its easy then why do you need help huh answer me
Step-by-step explanation:
HELP HELP 20 Points
Geometry
Answers
270° → [tex] \frac{3π}{2} [/tex] ≈ 4.7
360° → [tex] 2π [/tex] ≈ 6.3
60° → [tex] \frac{π}{3} [/tex] ≈ 1.1
45° → [tex] \frac{π}{4} [/tex] ≈ 0.8
135° → [tex] \frac{3π}{4} [/tex] ≈ 2.4
225° → [tex] \frac{5π}{4} [/tex] ≈ 3.9
PLS, HELP DO NOT TRIY THE FAKE I CANT UPLOAD STUFF I KNOW IS A VIREIS.
The height of the water in a tank decreases by 3.5 cm each day. When the tank is full, the water is 10 m deep. The water tank needs to be refilled when the water height drops below 4 m.
Write a question that could be answered by solving the equation 10−0.035d=4.
Answers
Answer:
After how many days will the tank need to be refilled?
Step-by-step explanation:
To answer our question, we first need to figure out what d represents. d is multiplied by 0.035, which is how much the water level decreases daily. Since it decreases daily, the overall amount it decreases depends on how many days have passed. It is logical then to deduce that d represents days (also days starts with d, so we know we're on the right track haha).
The equation equals to 4, the water level at which the tank must be refilled, so we know we are looking for d when the tank must be refilled.
Identity the coterminal angle between 360° and 360° for the angle - 120°
No
Answers
what is the poem Caged Bird about?
Answers
Can someone please help me!!!
Answers
hope this helps :)
I need help with these problem
Answers
9514 1404 393
Answer:
97,264.64 yd²
Step-by-step explanation:
The circumference of a sphere is the circumference of a circle with the same radius:
C = 2πr
The area of a sphere is given by the formula ...
A = 4πr²
In terms of circumference, that is ...
A = 4π(C/(2π))² = C²/π
Using the given values, the area of the sphere is ...
A = (552.64 yd)²/3.14 = 97,264.64 yd²
Answer:
97, 264.64 yd²Step-by-step explanation:
The circumference of a sphere is the circumference of the circle with the same radius:
C= 2πr
The area of a sphere is given by the formula...
A= 4πr²
In terms of circumference, that is...
A= 4π(C/(2π))²=C²/π
Using the given values, the area of the sphere is ...
A= (552.64 yd)²/3.14= 97, 264.64 yd²
write the following ratios in their simplest form 32: 24: 40
Answers
Answer: 4, 3, 5
Step-by-step explanation: Just simplify by dividing
What is the area of this shape?
Answers
Answer:
720
Step-by-step explanation:
Apply the distributive property to create an equivalent expression.
I will give brainiest but if you put a link i won't
Answers
9514 1404 393
Answer:
12e -6f -8
Step-by-step explanation:
The factor outside parentheses multiplies each term inside parentheses.
= (6e)(2) +(-3f)(2) +(-4)(2)
= 12e -6f -8
5th grade math. correct answer will be marked brainliest
Answers
John shared 3 cookies with 4 friends. What fraction of a cookie did each friend recieve?
Answers
Answer:
0.75 .................
Order the angle measures from least to greatest
please help
Answers
Answer:
Least = m<H
Middle = m<J
Greatest = m<I
Step-by-step explanation:
The angle opposite the shortest side would have the shortest angle. The side opposite the greatest side would have the greatest angle.
Least = m<H
Middle = m<J
Greatest = m<I
Having Problems With This Question
Answers
Answer:
f+g(2)=10
f-g(4)=-4
F/G(2)= 7/3
(f)(g)(1)=0
Step-by-step explanation:
1. (f+g)=2x+3+x^2-1 2(2)+2=10
2. (f-g)=(2x+3)-(x^2-1)=-x^2+2x+4= -16+8+4=-4
3. f/g= 2x+3/x^2-1 4+3/3= 7/3
4. f*g= (2x+3)(x^2-1)= 2x^3+3x^2-2x-3= 2(1)^3-2(1)+3(1)^2-3=0
find the value of x in the isosceles triangle shown below
Answers
Answer:
[tex]x=6[/tex]
Step-by-step explanation:
[tex]x=\sqrt{52-4^2}=6[/tex]
X=6
MARK ME BRAINLIEST PLEASE
I need Help please in this problem
Answers
Answer:
Answer the question yourself and stop being lazy!
Step-by-step explanation:
giving brainliest !!!!!!!
Answers
Answer:
6 square inches
Step-by-step explanation:
6(1*1) = 6 in^2
Answer:
hi
Step-by-step explanation:
i think 6×1in²=6
i hope it is true
hope it helps
have a nice day