Swimming pool on a certain hot summer's day, 510 people used the public swimming pool. the
daily prices are $1.50 for children and $2.50 for adults. the receipts for admission totaled $1116.00.
how many children and how many adults swam at the public pool that day?
there were
children at the public pool.

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

hope this

the expected value of the random variable : 0, 1 and 2

step-by-step explanation:

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.

the answer is 8.64

step-by-step explanation: