Answer:
d) 54
Step-by-step explanation:
Let's name x the age of Kylie.
Then we have:
K = x
Joan is 2 years younger than Kylie ⇒ J = x - 2
Kylie is 3 years older than Lilian ⇒ L = x - 3
Miriam is one year older than Joan ⇒M = (x - 2) + 1 = x - 1
If we sum up all ages we get: x + x -2 + x - 3 + x - 1 = 4x - 6
<u>Therefore, the sum of all ages is 4x - 6. </u>
Let's make x = 14 ⇒ 4x - 6 = 4(14) - 6 = 50
Let's make x = 15 ⇒4x - 6 = 4(15) - 6 = 54
Let's make x = 16 ⇒4x - 6 = 4(16) - 6 = 58
If we substitute for smaller x, we'll get values smaller than 50 and if we substitute for x >16 we'll get values greater than 58.
Looking at the options given by the problem, we can see that the only one that fits into the equation is d) 54.
Answer:
31
Step-by-step explanation:
We start with 16 matches between 32 people, then 8 matches between 16 people, then 4 matches between 8 people and 2 matches between 4 people and finally 1 match for the finals. The total is 31 matches
Answer:
x = - , x = 5
Step-by-step explanation:
Given
f(x) = (x - 5)(5x + 2)
To obtain the solutions set f(x) = 0, that is
(x - 5)(5x + 2) = 0
Equate each factor to zero and solve for x
x - 5 = 0 ⇒ x = 5 ← larger x
5x + 2 = 0 ⇒ 5x = - 2 ⇒ x = - ← smaller x
right angles. .... . . . . ......
6x^2+3x+9. (combine the two X^2 then the other two don’t have pairs)