Answer:
7 years
Step-by-step explanation:
27370 - 26986.82 = 383.18ft
0.2% = 0.2/100 = 0.002
27370*0.002 = 54.74
each year the montain reduce your elevation
54.74ft
then:
383.18/54.74 = 7
Answer:
7 years
Answer:
a+62=65
Step-by-step explanation:
if a=3 then 62+3=65


First of all to make our equation simpler, we'll equal

to a variable like 'a'.
So,

Now let's plug

's value (a) into the equation.

Now we turned our equation into a quadratic equation.
(The variable 'a' will have a solution set of two solutions, but 'x' , which is the variable of our first equation will have a solution set of four solutions since it is a quartic equation (<span>fourth-degree <span>equation) )
Let's solve for a.
The formula used to solve quadratic equations ;

The formula is used in an equation formed like this :
</span></span>

In our equation,
t=16 , b=-41 and c=25
Let's plug the values in the formula to solve.

So the solution set :

We found a's value.
Remember,

So after we found a's solution set, that means.

and

We'll also solve this equations to find x's solution set :)


So the values x has are :

,

,

and

Solution set :

I hope this was clear enough. If not please ask :)
I think the answer is 28yd
Answer: XI = 10.35 mm
Step-by-step explanation:
Considering the given triangle XIF, to determine XI, we would apply the sine rule. It is expressed as
a/SinA = b/SinB = c/SinC
Where a, b and c are the length of each side of the triangle and angle A, Angle B and angle C are the corresponding angles of the triangle. Likening it to the given triangle, the expression becomes
XI/SinF = XF/SinI = FI/SinX
The sum of the angles in a triangle is 180°. It means that
F + 63 + 52 = 180
F = 180 - (63 + 52)
F = 65°
Therefore
XI/Sin 65 = 9/Sin 52
Cross multiplying, it becomes
XISin52 = 9Sin65
0.788XI = 9 × 0.906
0.788XI = 8.154
XI = 8.154/0.788
XI = 10.35