Answer:
<h2>B and D</h2>
Step-by-step explanation:
This equation is true in either case, because the expression is equivalent to itself, that means the equation is true for all positive real numbers including the zero.
Therefore, the right answers are B and D, both numbers are true solutions of the expression.
Answer: 74.6
we draw a right triangle ABC, have: ∠ABC = 90°, AB = 20 and ∠BAC = 75°, the height of the building is BC
we also have: tan 75° = BC/AB = BC/20
=> BC = tan 75°. 20 = 40 + 20√3 ≈ 74.6
Step-by-step explanation:
I can give you are summary of how to do it. UK geometry is somewhat different to US with regard to symbols used and names.
You need to prove that the 2 triangles BCE and ADE are congruent and then you can say that the sides are also congruent:- Sides BC and AD are equal (opposite sides of a parallelogram) Also < CBE = <ADE ( alternate angles) and < BCE = EAD ( alternate angles) So the triangles are congruent by 2 angles and the corresponding side, ( I think that would be ASA in the US).
The answer is A. 25%
the reason for this answer is to find the percentage, u must divide 100/80 and u get 1.25
the one represents the 100% and the .25 represents 25%
hope this helps!
Step-by-step explanation:
let the younger person be x and older be y
4x + 9 = 24
4x = 15
x = 3.75
y = 24 - 3.75
y = 20.25