Elimination:
7x - 3y = 20
5x + 3y = 16
(add)
12x = 36
÷ 12
x = 3
(5 × 3) + 3y = 16
15 + 3y = 16
- 15
3y = 1
÷ 3
y = 1/3
Substitution:
5x + 3y = 16
- 3y
5x = 16 - 3y
÷ 5
x = 3.2 - 0.6y
5(3.2 - 0.6y) + 3y = 16
16 - 3y + 3y = 16
16 = 16
- 16
6y = 0
÷ 6
y = 0
Sorry the substitution messed up for some reason, I'll fix it after I've answered the other question
Answer:
x = 3
y = 2
Step-by-step explanation:
<h2>Answer:
</h2><h2>
Techno ∩ (European ∩ Dutch)'</h2>
Step-by-step explanation:
According to sets theory ;
Intersection ( ∩ ) - e.g (European ∩ Dutch) represents both European and
Dutch , while (European ∩ Dutch)' represents neither
European nor Dutch .
Union ( ∪ ) - e.g (European ∪ Dutch) represents either European or Dutch .
So , Techno ∩ (European ∩ Dutch)' represents set notation of techno musics that is neither European nor Dutch .
The gievn equation is ,
where t is the time in seconds and h is the no.of hamburgers assembled.
put h = 2 in equation (1).
blank A assembles 2 hamburges in 22.6 seconds.
put h = 3 in equation (1)
blank B assembles 3 hamburgers in 33.9 seconds.
put h = 5 in equation (1)
blank C assembles 5 hamburgers in 56.5 seconds.
put h = 8 in equation (1)
blank D assembles 8 hamburgers in 90.4 seconds.
Answer:
x²+4=0
Step-by-step explanation:
x²=-4
√x² = √-4
x = 2i
x is an imaginary number
