Answer:
x = 40
Step-by-step explanation:
The sum of all the interior angles of a triangle is 180 degrees
So, 180-63-77 is your answer.
x = 40
Did u get anything? im also on this question
Answer:
t = 3 s and t = 4 s
Step-by-step explanation:
Given that,
A projectile is fired straight up from ground level with an initial velocity of 112ft/s. Its height as a function of time t is given by :
We need to find the interval of time during which the projectile’s height exceeds 192 feet. It means put h = 192 feet
So,
The above is a quadratic equation, it can be solved using middle term splitting as follow :
Hence, at t = 3 s and t = 4 s, the projectile’s height exceeds 192 feet above the ground.
We will be using the fact that , where is the probability that the first bulb works and is the probability that the second bulb works.
The probability that the first bulb works is . However, when we take one out (given that the first bulb works) we now have 19 working bulbs and 4 bad ones. This means that the probability that the second bulb works is .
Now, we can find our final probability:
The answer is 0.87. Hope i could help