The angle of elevation is the degree at which you need to look up, therefore the angle between the dotted line, let's call it LM, and line LK is 5 degrees
Angle JLK and Angle KLM are also complimentary angles, meaning that they both add up to 90 degrees, therefore angle JLK = 90-55=35degrees
Now, SOHCAHTOA comes in handy to find JL. Since we know JLK and JK, this is going to be a breeze.
Since the sides we are using are opposite and adjacent to JLK, we are going to use tan.
So: tan = o/a
however, as we don't know a, we need to rearrange the equation so a is on its own
tan=o/a (times both sides by a)
tan a = o (divide both sides by tan)
a = 0/tan
Now we can solve the equation with the information given
a = 26/tan35
a = 26/0.7
a=37.13184818
=> 37.1
So, you can put down A as your answer :D
Answer: 1/3x
Step-by-step explanation:
X=2 it’s Honestly easy I just look at da missing number
It is a linear equation (ie., no x²), so solution should be possible.
First, let's get rid of the brackets:
2/4 x - 1/4 + 1/5 x - 1/5 = 2
Next, lets change the denominator to 20, the least common multiple of 4 and 5:
10/20 x - 5/20 + 4/20 x - 4/20 = 40/20
Then simplify by taking the x terms together and the constant terms:
14/20 x = 49/20 (now multiply by 20 to remove the denominator)
14x =49 (now divide left and right by 14)
x = 49/14 (divide numerator and denominator by 7)
x = 7/2
Of course, there's any order in which you can perform these operations. They should all lead to the same answer.
Answer:
It will take 3 hours 46 minutes and 8 seconds to use 375 mg of ibrufen.
Step-by-step explanation:
An adult takes 400 mg of ibuprofen. Two hours later, there is 201.6 mg of
ibuprofen left in the persons system
This means that in 2 hours time
400- 201.6= 198.4 mg was used up.
We need only 25 mg in the system
so 400- 25= 375 mg time is needed
time mg
2 hour 198.4
x 375
Using the cross product rule
x= 375*2/198.4
x= 3.780 hrs
Which means 3 hours and (0.78* 60)= 46.8 minutes.
It will take 3 hours 46 minutes and 8 seconds to use 375 mg of ibrufen.