The first number is 20
The second is 40
The third is 70
the first number = a
The second number = 2a
The third number = 3 1/2a
6 1/2a = 130
a = 20
Hope this helps!
Answer:
G
Step-by-step explanation:
Using the rule of exponents
= 
Consider the left side
=
, then
= n²
Since bases on both sides are equal, equate the exponents
x - y = 2 → G
Answer:
The length of BC is needed because it is the side opposite ∠A.
Step-by-step explanation:
Given the right angles triangle as shown in the attachment, we can get sin(A) without using Pythagoras theorem. Instead we will use SOH CAH TOA trigonometry identity.
According to SOH:
Sin(A) = Opposite/Hypotenuse
Sin(A) = |BC|/|AB|
Opposite side of the triangle is the side facing ∠A.
Based on the formula, we will need to get the opposite side of the triangle which is length BC for us to be able to determine sinA since the hypotenuse is given.
130 If you multiply that’s what it would give you so I’m not sure what those answers are