Answer:1
Step-by-step explanation:
Answer:
A=-2; B=-1
Step-by-step explanation:
3a - 2b + 4 =0
2a -5b -1 = 0
Let's multiple the top equation by 2, and the bottom by -3, and then use addition.
[3a - 2b + 4 =0]*2
[2a -5b -1 = 0]*(-3)
6a-4b+8=0
-6a+15b+3=0
Now add the two equations together:
11b + 11 = 0
Subtract 11 from both sides
11b = -11
Divide both sides by 11
b=-1
Substitute in the first equation:
3a - 2(-1) + 4 = 0
Simplify to get 3a+6 = 0
Subtract 6 from both sides to get 3a = -6
Divide both sides by 3 to get a=-2
<span>The answer for:
4 + (−3) − 2 × (−6), once simplified is:
D.13
Hope this helps :)
</span>
Answer:
$3
Step-by-step explanation:
let the cost of apple pie be 
and the cost of chocolate pie be 
.
We then express the situation as:
#Make y the subject of the formula in equation 1 then substitute in 2:
Hence, the cost of a chocolate pie is $3
the answer is a cause in the question they state the 6 packs first before the cards (30)
