Answer:
<u>135.94 feet</u>
Step-by-step explanation:
Split the problem into two parts :
- Distance between viewer and building
- Height of the top part of the building
<u>Distance between viewer and building</u>
- The lower part of the building is 40 feet, as it is mentioned the viewer is 40 feet above street level
- Let the distance be called 'd'
- Therefore, tan37° = 40/d
- tan37° = 3/4 = 0.75
- ⇒ 40/d = 0.75
- ⇒ d = 40/(3/4) = 40 x 4/3 = 160/3 = 53.3 feet
<u>Height of the top part of the building</u>
- Let the height of the top part be 'h'
- Therefore, tan61° = h/d = h/53.3
- tan61° = 1.8
- ⇒ h/53.3 = 1.8
- ⇒ h = 53.3 x 1.8 = 95.94 feet
<u>Total height of building</u>
- Lower part + Top part
- 40 + 95.94
- <u>135.94 feet</u>
<u />
Answer:
a= 
or ≈ -3.66
Step-by-step explanation:
-(3a+4)=7
-3a-4=7
<em>Add 4 to both sides</em>
-3a=11
<em>Multiply both sides by -1</em>
3a= -11
Divide both sides by 3
a=
The equation would be something like this:
y=72.39+ .18x+.06x
then simplify
y=72.39+.24x
Answer:
9 hours
Step-by-step explanation:
Number of bracelet varies directly with the amount of time she spends
If number of bracelet =n
Amount of time=t
It means,
n=kt
5 bracelet in three hours
5=k3
k=5/3
To make 15 bracelet,
n=kt
15=5/3*t
15=5/3t
t=15÷5/3
=15×3/5
=45/5
t=9 hours
Kay will spend 9 hours making 15 bracelet
