Answer:
x=-17, y=5. (-17, 5).
Step-by-step explanation:
-2x-5y=9
3x+11y=4
---------------
3(-2x-5y)=3(9)
2(3x+11y)=2(4)
---------------------
-6x-15y=27
6x+22y=8
-----------------
7y=35
y=35/7
y=5
3x+11(5)=4
3x+55=4
3x=4-55
3x=-51
x=-51/3
x=-17
Answer:
yes.
Step-by-step explanation:
write these ratios as fractions to see if they are proportional
3/4
9/12 -------> this can be simplified by dividing by 3
= 3/4
therefore yes they are equivalent
Answer:
Option B.
Step-by-step explanation:
If a quadratic equation is defined as
.... (1)
then the quadratic formula is
The given equation is
It can rewritten as
.... (2)
On comparing (1) and (2) we get
Using quadratic formula we get
Therefore, the correct option is B.
Answer:
M = 1170 g
Step-by-step explanation:
Mass = density × volume
M = p x v
M = 78 x 15
M = 1170 g
Answer:
...
Step-by-step explanation:
1. 0.002
2. 308%
3. 2 6/10
