Answer:
(x + y)² = 25
Step-by-step explanation:
The expansion of (x + y)² is
(x + y)² = x² + y² + 2xy ← substitute x² + y² = 15 and xy = 5
= 15 + 2(5)
= 15 + 10
= 25
They are using two different functions.
Tell your math teacher that questions like these are loaded and should not be given as assignments.
Answer:
Not completely sure but (this is probably so wrong) YX, XZ AND JK, JL
Step-by-step explanation:
✨✨✨✨✨✨Hope This Helps✨✨✨✨✨✨
Answer:
Stephanie has more than $900
Step-by-step explanation:
Represent the unknowns: a for Alexandra and s for Stephanie.
Then a + s > $2,500, and a = s + $700.
Substituting the latter into the former equation, we get:
(s + $700) + s > $2,500, or
2s > $1800
Then s > $900; Stephanie has more than $900.
Im not sure but I’ll go with c :)
