(-2v2+19v-5) - (-4v2+v-23)? How to do????!!!!! Thank you
2 answers:
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Answer:
52
Step-by-step explanation:
Substitute values given:
Simplify:
64-14+2
50+2
52
Therefore 52 is our answer
Answer with Step-by-step explanation:
We are given that:
tanA = 0.45
tanA=
=
⇒ =0.45
⇒ =
⇒ =
⇒ AC= 20
Hence, by pythagoras theorem
AB²=AC²+BC²
AB²=20²+9²
AB²=481
⇒ AB=21.9 units
Hence, the approximate length of AB is:
22 units