Answer:
|-2| + |5|
Step-by-step explanation:
Dennis walks from (–5, –2) to (–5, 5) on the map.
Point on the format (x,y). On the x-coordinate, he stayed at the same position, x = -5, so it does not enter the distance calculation.
On the y-coordinate, he went from -2 to 5, so the distance is of:
So the correct option is |-2| + |5|
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.
Answer:
450
Step-by-step explanation:
639 is what percent of 142? = 450.
Answer:
the answer in the picture is correct
The weighted mean if the quizzes each count for 20% and the final exam counts for 40% of the final grade rounded to one decimal place is <u>18.8</u>
Mean is the average set of numbers.
Given the Elaine quiz grades to be 90, 83 and 64
40% of the final grade will be expressed as:
20% of 90 = 18
20% of 83 = 16.6
20% of 64 = 12.8
If the quiz count for 40% of the final grade, then her final grade will be:
40% of 69 = 27.6
Take the weighted mean
Mean = Sum of scores/Sample size
Mean = (18+16.6+12.8+27.6)/4
Mean = 75/5
Mean = 18.75
Hence the weighted mean if the quizzes each count for 20% and the final exam counts for 40% of the final grade rounded to one decimal place is 18.8
Learn more here: brainly.com/question/23035749