12) the answer is A
11 -2v-3=-2-8
8=8
13) the answer is A
because 3 are not equal to -5
or
5v+3=5v-5
5v-5v=-5-3
0=-8 (false)
Answer:
option d is correct answer.
<em>hope</em><em> </em><em>it</em><em> </em><em>helps</em><em>.</em><em>.</em>
Why are you promoting on Brainly dude xD
The pythagorean theorem states that a² + b² = c².
We have a = 10 and c = 20.
100 + b² = 400
Subtract 100 from each side.
b² = 300
Get the square root of 300.
It could be expressed as b ≈ 17.321, or could stay in radical form as
.
Hope this helps!