Answer:
y=-3x+13
Step-by-step explanation:
y- 4 = -3(x - 3)
y-4=-3x+9
y=-3x+13
2x^2+7x-4=0
Δ=7^2-4*2*(-4)
Δ=49+32
Δ=81
x1=(-7+V81)/4=(-7+9)/4=2/4=1/2
x2=(-7-9)/4=-16/4=-4
the solutions: x1= 1/2 and x2= - 4
Answer:
3 
Step-by-step explanation:
each post is 
the height of the previous post
there are 4 poles between the tallest 3 ft and the smallest
this involves multiply the heights of previous poles by , 4 times
shortest pole = 3 ×
Answer:
12 nickels and 4 dimes
Step-by-step explanation:
5 x 12 = 60 cents
10 x 4 = 40 cents
_______
100 = 1 dollar
Answer: 6 teams
Step by step:
3 people=1 group
3+3=6
6 people taken out of 18
2 groups already
3+6=9
9 out of 18 people taken
3 groups made
9+3=12
12 out of 18 people taken
4 groups made
12+3=15
15 out of 18 people taken
5 groups made
15+3=18
18 out of 18 people taken
Answer: 6 groups made
Short step by step:
18 divided by 3 equals 6
Or
3 times 6 equals 18
I really hope that made sense
