Answer:
<D = 100
<E =30
<F =50
Step-by-step explanation
Given that triangles triangle ABC and triangle DEF are similar, this means that their angles are congruent i.e
<A = <D
<B = <E
<C = <F
Given
<A = 100 then <D = 100
<B = 30°, then <E = 30°
To get <F, we will use the expression
<D+<E+<F = 180 (sum of angles in a triangle is 180°)
100+30+<F = 180
130+<F = 180
<F = 180-130
<F = 50°
Hence the measure of <F is 50°
The square root of 63 is about 7.9, which is between 7 and 8
The answer it is b because that is the right answer
0.65/100 = x/160 Ok, until now?
You then find the cross product: (0.65)(160) = 100x
104 = 100x 104/100 = 1.04
So x = 1.04 and it is also 0.65% of 160
Hope this helps!