Ba=ab+18
a+b=8, b=8-a
10b+a=10a+b+18
10b-b=10a-a+18
9b=9a+18
9(8-a)=9a+18
72-9a=9a+18
9a+9a=72-18
18a=54
a=54:18
a=3
b=8-3
b=5
the number is 35
check 53=35+18
53=53 true
Answer:
see graph of y=3/4 x-4
Step-by-step explanation:
Assuming you mean
Below is a graph of that one. The slope is 3/4 and the interception with the y axis is at y=-4. The equation is in its normal form y=ax+b with a=3/4 (slope) and b=-4 (y intercept), so no conversion needed.
You have to be careful on how you write these equations down. It might very well be that you meant:
or 
However, those are more complex so I'm hoping for the first one... ;-)
Answer:
87,665 rounded to thousands is 88,000
Step-by-step explanation:
0-4 means don't round up
5-9 means round up
I'll just factor the above equation.
x² + 18x + 80
x² ⇒ x * x
80
can be:
1 x 80
2 x 40
4 x 20
5 x 16
8 x 10 Correct pair
(x+8)(x+10)
x(x+10) +8(x+10) ⇒ x² + 10x + 8x + 80 = x² + 18x + 80
x+8 = 0
x = -8
x+10 = 0
x = -10
x = -8
(-8)² + 18(-8) + 80 = 0
64 - 144 + 80 = 0
144 - 144 = 0
0 = 0
(-10)² + 18(-10) + 80 = 0
100 - 180 + 80 = 0
180 - 180 = 0
0 = 0
I think the algebra tiles will not be a good tool to use to factor the quadratic equation because the equation is not a perfect square quadratic equation.
The answer would be B because you have to multiply 1/3 by 3 to get a whole cup. Therefore, you have to multiply 1/4 by 3 also. In this case, the answer would be 3/4. Hope this helps!
