X = 4
Explanation:
sqrt(x) + sqrt(5 + x) = 15 / sqrt(5 + x)
sqrt(5 + x)[sqrt(x) + sqrt(5 + x)] = 15
sqrt(5x + x^2) + 5 + x = 15
sqrt(5x + x^2) = 10 - x
Take square of both sides
5x + x^2 = (10 - x)^2
5x + x^2 = 100 - 20x + x^2
Cancel x^2
5x = 100 - 20x
25x = 100
x = 4
Hi,
The answer is B. Since you have 2.5$ and the cost of lunch is 2.5$, you will buy lunch today.
Hope this helps.
r3t40
Mwamini drinks juice at the rate of 40 sec per liter, and her time limit is 120sec.
I think not sure
I hope this helps you
area=21×21
area=441
Answer:
As a member, Tom's cost would be cheaper if he rents the courts 17 or more times.
Step-by-step explanation:
Let the number of times be x
If Tom is a member, and rents the courts x number of times, then he would pay
$135 + $3 × x = $135 + $3x
For a nonmember that rents x number of times, the nonmember would pay
$11 × x = $11x
Now, we are to determine which value of x for which $135 + $3x is less than $11x, that is
$135 + $3x < $11x
Solving the inequality,
$135 < $11x - $3x
$135 < $8x
$135 / $8 < x
16.875 < x
∴ x > 16.875
This means, for Tom's cost to be cheaper, he must have rented the court for more than 16.875 times. (Round 16.875 to the nearest whole number)
16.875 ≅ 17
∴ x > 17
Hence, As a member, Tom's cost would be cheaper if he rents the courts 17 or more times.
