Answer:1.x= 3.66666 or 11/3
2.y=4
3.a=1
Step-by-step explanation:
1. 23 = 6x + 1
-1. -1
22=6x
÷6 ÷6
x=3.66666 or 11/3
2. 5.7 + 0.3y = 6.9
-5.7. -5.7
0.3y=1.2
÷0.3. ÷0.3
y=4
2. -3a + 7 = 9a - 5
+3a. +3a
7=12a-5
+5. +5
12=12a
÷12 ÷12
a=1
As age increases, the value decreases. Older = less valuable
Value = k x 1/age
$3,000 = k x 1/6
To find k, use $3,000 = k/2
k = $6,000
Substitute $6,000 for k
$3,000 = $6,000 x 1/6 = $1,000
Answer revealed in the attachment below.
That's not correct. The terms 2a and 3b are not like terms, so we cannot combine them to get 5ab. We simply leave it as 2a+3b.
If you had 2a+3a, then it would simplify to 5a
Similarly, 2b+3b = 5b
Or you could have 2ab+3ab = 5ab
The key is that the variable portions must match up to be able to add them.
Answer:
Step-by-step explanation:
9y-4 = 50
9y = 54
y= 6
9y-4+7x+xy = 180
9(6)-4+7x+6x= 180
54-4+13x = 180
13x+50 = 180
13x = 130
x = 10
