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Fantom [35]
3 years ago
11

What is true about the dilation?

Mathematics
1 answer:
IrinaK [193]3 years ago
8 0
Dilation is scale factor, like a dilation scale factor of 2
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A postcard has an area of 24 square inches. Two enlargements of the postcard have areas of 54 square inches and 96 square inches
Alex777 [14]

Answer:

original is 4 & 6.

for 54 sq inch= 6 & 9 and for 96 sq inch=8 & 12

Step-by-step explanation:

Given: The length is 1.5 times the width.

so the length is, l = 1.5w ----(a)

lw = 24  =1.5w(w)

lw = 54= 1.5w(w)

lw = 96 =1.5w(w)

Further simplifying it,

1.5w^{2}=24

1.5w^{2}=54

1.5w^{2}=96

so,

w^{2} = \frac{24}{1.5}=16

w^{2}= \frac{54}{1.5} =36

w^{2}= \frac{96}{1.5} =64

taking the square root, we get:

w = 4

w = 6

w = 8

By putting the above values in eq (a), we can find their corresponding lengths:

l = 1.5(4) = 6

l = 1.5(6) = 9

l = 1.5(8) = 12

So a few lengths could be:

(l, w)

(6,4)

(9,6)

(12,8)

5 0
3 years ago
Read 2 more answers
The slope of a line is negative for use the cordons of the labeled point to find a point-slope equation of the line.
Alexeev081 [22]
For slope m and point (x₁, y₁), the point-slope equation of the line can be written as
  y -y₁ = m(x -x₁)

You have m = -4 and (x₁, y₁) = (4, -9), so the equation of your line is
  D. y+9 = -4(x-4)
5 0
4 years ago
Please help me !! (no this isnt a test/exam)
stiv31 [10]

Answer:

  infinitely many

Step-by-step explanation:

Add 12-y to both sides of the second equation to put it into standard form like the first equation:

  y +(12 -y) = (x -12) +(12 -y)

  12 = x - y . . . simplify

  x - y = 12 . . . . second equation in standard form

We see this is identical to the first equation. That means every solution of the first equation is also a solution of the second equation. There are infinitely many solutions.

8 0
2 years ago
What is the greatest common factor of 18 and 54?
Shtirlitz [24]

Answer:

18

Step-by-step explanation:

18=2×3×3

54=2×3×3×3

gcd=2×3×3=18

3 0
3 years ago
The perimeter of a triangle is 42 inches. One side measures 18 inches. The shortest side measures x inches. The longest side mea
julia-pushkina [17]
<span>Shortest side = x, Longest Side = 4x-1, third side = 18 Equation is x + (4x-1) + 18 = 42 so 5x-1 = 42-18=24 and 5x=25 so x = 5, longest side = 4(5)-1=19, third side=18 Add all 3 (5+19+18) to get 42</span>
3 0
3 years ago
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