Answer:
1. 8.04
2. 20 feet
3. d
4. c
5. Ed = 4
Step-by-step explanation:
Pythagoras theorem
a² + b² = c²
4² + b² = 6²
16 + b² = 36
b² = 20
square root 20 = 4.47
6 ÷ 4.47 = 1.34
6 × 1.34 = 8.04
At 3 seconds, the firework is at a height of 150 feet
Answer is C. third option
The firework is at a height of 150 feet
The answer is 4 because if area is 28 meaning when you times the base and the height you'll get 28 therefore if you plug in 4 in the spot of x it should be 4+3 which equals 7 and since the value of x is 4 on top it must be 4 on the side too so you must do 7×4 which equals 28
The length of the missing side of the triangle is 129.96
<h3>Right angle triangle</h3>
Right angle triangle are triangle that has one of its sides as 90 degrees. The sides can be found using Pythagoras theorem. Therefore,
c² = a² + b²
where
c = hypotenuse
a and b are the other legs.
Therefore,
19² - 15.2² = a²
a = 361 - 231.04
a = 129.96
learn more on right triangle here: brainly.com/question/20795478
