Answer:
The graph going down answers are 3,-1, -5, and then -9
Step-by-step explanation:
Answer:
Step-by-step explanation:
The given equations are:
2a+7b=0 and 3a-5b=31
Statement Reason
1. 10a+35b=0, 21a-35b=217 (Multiply first equation by 5 and second by 7)
2. 31a=217 (Adding both the equations)
3. a=7 (Dividing both sides by 31)
4. 2(7)+7b=0 (Substituting a=7 in first equation)
5.14+7b=0 (solving step 4)
6. 7b=-14 (Subtracting 14 on both sides)
Answer:
The zeros are x=5 and x=3
Step-by-step explanation:
x^2-8x+15
To find the zeros, we set the equation equal to zero
x^2-8x+15 =0
Factor the equation
What 2 numbers multiply to 15 and add to -8
-5*-3 = 15
-5+-3 = -8
(x-5) (x-3) =0
Using the zero product property
x-5 =0 x-3 =0
x=5 x=3
The zeros are x=5 and x=3
Answer: D
Density= mass/volume
12.9g/8cm3= 1.6 g/cm3