A triangle is drawn on a coordinate grid with coordinates of (1, 3), (4,7), and (8, 2). Which of the following sets of coordinates
represent the vertices of a triangle similar to the given triangle
with a scale factor of 2?

A.(3,5), (6,9), (10,4)
B.(-1, 1), (2,5), (6,0)
C.(2,3), (2,7), (2, 2)
D.(2,6), (8, 14), (16,4)

the answer is b: 18

step-by-step explanation:

use the pythagorean theorem to .

a^2+b^2=c^2

plug 18 for "r"

the 2 legs are 18 and 24

18^2+24^2=c^2

324+576=c^2

900=c^2

c=30

30-12=18

18 is the radius

: )

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is: