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egoroff_w [7]
2 years ago
13

Question 1 of 10

Mathematics
1 answer:
Radda [10]2 years ago
8 0

Answer:

C is correct

Step-by-step explanation:

{x}^{2}  = 18 \\ x =  \frac{ + }{}  \sqrt{18}  =  \frac{ + }{}  \sqrt{9 \times 2}  =  \\ x =  \frac{ + }{}  \sqrt{9}  \times  \sqrt{2}   \\ x =  \frac{ + }{} 3 \sqrt{2}

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A triangle with vertices at A(20, –30), B(10, –15), and C(5, –20) has been dilated with a center of dilation at the origin. The
Kobotan [32]

Answer:

One-fifth

Step-by-step explanation:

step 1

Find the distance between the origin and the point B

the formula to calculate the distance between two points is equal to

d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}

we have

O (0,0) and B(10, –15)

substitute

d=\sqrt{(-15-0)^{2}+(10-0)^{2}}

d=\sqrt{325}\ units

step 2

Find the distance between the origin and the point B'

the formula to calculate the distance between two points is equal to

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we have

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substitute

d=\sqrt{(-3-0)^{2}+(2-0)^{2}}

d=\sqrt{13}\ units

step 3

Find the scale factor of the dilation

The scale factor is equal to divide the length of segment OB' by the length of segment OB

so

\frac{\sqrt{13}}{\sqrt{325}}=\frac{1}{5}

so

One-fifth

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determine whether each relation is a function. State the domain and range of the relation. (-1,2)(1,-2)(3,-4)(-3,4)
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Answer:

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Hope this helped!

Step-by-step explanation:

6 0
3 years ago
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