1. Graph: a) positive:x>1
b)negative: x<1
c) increasing : none
d ) decreasing: x ∈ R\ { 1 }
2. a) positive: x < -2
b) negative: x > -2
c) increasing: x ∈ R\ { -2 }
d ) decreasing: none.
3. a) positive: x ∈ R\{ 0 }
b ) negative: none
c ) increasing: x< 0
d ) decreasing: x> 0
Draw your own diagram: in the attachment.
Answer:
Side a = 20.8
Side b = 20.5
Side c = 30
Side d = 2
Side e = 12.6
Step-by-step explanation:
We need to know what X is here is the equation:
3.2a+8+12.6+
+5(a+2)+(6a-3.5)=85.9
After doing the math you get a=4.
Apply this to each side and get the answer.
Side a = 20.8
Side b = 20.5
Side c = 30
Side d = 2
Side e = 12.6
<u>Check</u>
20.8+20.5+30+2+12.6=85.9
Answer:
y = 40
Step-by-step explanation:
For #7, we are told that y = 10 when x = 2
We are also told that 'y varies directly as x'. That means there is some constant number, k, so that
Formula --> y = kx
Since y=10 and x= 2, we substitute those numbers into the formula.
We get 10 = k × 2.
So k has to be 5, right?
k = 5
So what is y when x = 8?
Use the formula.
y=kx ---> That gives us y = k × 8. But we know k is 5.
So y = 5 × 8 = 40
y = 40
Answer:
80 x 30 = 2,400
Step-by-step explanation:
