Put in -4 for y
13x=4x+4(-4)
Subtract 4x from both sides
9x= -16
Divide both sides by 9
X=-16/9
<span>Answer B
If the sum of the digits in the number is a multiple of the number 9 is divisible by 9
A 63
digits : 6,3
sum 6 + 3 = 9
9 : 9 = 1
</span><span>The number of 63 is divisible by 9
</span>.............................................................
B 69
digits 6,9
sum 6 + 9 = 15
1,(6)
------------
15 : 9
- 9
----------
60
- 54
--------
60
<span>the number 69 is not a multiple of 9 and divided by 9 do not receive natural number</span>........................................................
C 18
digits 1,8
sum 1+8 = 9
9:9 = 1
<span>The number of 63 is divisible by 9
</span>........................................................
D 27
digits 2,7
sum 2 + 7 = 9
9 : 9 = 1
<span>The number of 63 is divisible by 9
</span>............................................................
difficult
621450450
digits 6,2,1,4,5,0,4,5,0
1 sum 6 + 2 + 1 + 4 + 5 + 0 + 4 + 5 + 0 = 27
2 sum 2 + 7 = 9
9 : 9 = 1
<span>The number of 63 is divisible by 9
</span>
621450450 :9 = 69050050
Step-by-step explanation:
-5x + 4y = 2
+ (9x - 4y = 6)
=> 4x = 8, x = 2.
Therefore -5(2) + 4y = 2, 4y = 12, y = 3.
The solution pair is (2,3).
$8.28 eight dollars and 28 cents
I don't know why you'd need to estimate that, it is just 12,
if that's not satisfactory post the answer choices.