Answer:
9 and 11
Step-by-step explanation:
Answer:
The answer is 15x - 10y = -8
Answer:
a. -5 ft per sec
b. 59.5 ft² per sec
Step-by-step explanation:
a. Suppose l represents the ladder, x represents the height of the top of ladder from the base of house and y represents the distance of base of ladder from the base of house.
By the Pythagoras theorem,
Differentiating with respect to t ( time ),
But, height of ladder, l = 13 ft = constant,
We have,
y = 5, ,
Again by equation (1),
From equation (2),
Hence, the rate of change of the height of the top of the ladder is -5 ft per sec.
b. Now area of the triangle = 1/2 × base × height
Differentiating with r. t. t,
= 59.5 ft² per sec
Hence, area of the triangle is changing with the rate of 59.5 ft per sec.
Pls give a formula and I will help u
1. Add the total ages up and divide that by the number of volunteers, that gives you 130 as the total ages added up and 10 volunteers, which gives you a mean of 13,
2. When the numbers are put in an ascending order 12 and 13 appear to be the middle two, therefore divide the sum of the two to find the median, which is 12.5.