Answer:

Step-by-step explanation:

<span>D. the probability that a student has a car or job
</span>
Answer:
n = 7
n = -3
Step-by-step explanation:
4n+6 = n²-15
4n = n² - 21
n² - 4n - 21 = 0
(n-7)(n+3) = 0
n = 7
n = -3
Answer: d. (17, 20)
Step-by-step explanation:
We have the following system of equations:
(1)
(2)
Isolating
from (1):
(3)
Substituting (3) in (2):
(4)
Isolating
:
(5)
(6)
(7)
Substituting (7) in (1):
(8)
Isolating
:
(9)
Hence, the correct option is d. (17, 20)
By the Pythagorean theorem
.. x = √((2√3)^2 -(√6)^2) = √(12 -6) = √6 . . . . cm
x = √6 cm