Answer:
299 and 45 if I am correct due to alternate angles and angles adding up to 360
acknolegde requirements:
straight line.(horizontol or vertical? i dunno)
passes through 3,3
perpindicular to y=-x-4
perpidicular lines have negative recipricals
-1 ---- 1
y-3= 1(x-3)
y-3=x-3
cancel out
y=x
Answer:
Quarters = 67
Nickel = 75
Step-by-step explanation:
Using simultaneous equations.
Let x represent the number of quarters and y the number of nickel.
1 quarter = $0.25
1 nickel = $0.05
Given;
Total number of coin = 142
So,
x + y = 142 ....1
Total value = $20.50
0.25x + 0.05y = 20.50 ......2
Divide equation 2 by 0.25;
x + 0.20y = 82 .....3
Subtract equation 3 from 1
y - 0.20y = 142-82
0.80y = 60
y = 60/0.80
y = 75
from equation 1
x+y = 142
x = 142-y = 142-75
x = 67
Number of each coin.
Quarters = 67
Nickel = 75
For this case we have the following system of equations:
y = x + 5
y = -2x - 1
Substituting the point (-2, 3) we have:
For Line C:
y = x + 5
3 = -2 + 5
3 = 3
The line goes through this point.
For Line D:
y = -2x - 1
3 = -2 (-2) - 1
3 = 4 - 1
3 = 3
The line goes through this point.
Answer:
(-2, 3), because both lines pass through this point
<span>ax</span>²+bx+c=0<span>
0 = 5x – 4x</span>²<span> – 2
-4x</span>² + 5x - 2 =0
a = -4
b = 5
с = -2
