Answer: C. (-4, -2)
<u>Step-by-step explanation:</u>
First, eliminate one of the variables and solve for the remaining variable:
2x - 5y = 2 → 3(2x - 5y = 2) → 6x - 15y = 6
3x + 2y = -16 → -2(3x + 2y = -16) → <u> -6x - 4y = 32</u>
-19y = 38
y = -2
Next, replace "y" with -2 into either of the original equations to solve for x:
2x - 5y = 2
2x - 5(-2) = 2
2x + 10 = 2
2x = -8
x = -4
x = -4, y = -2
<u>Check:</u>
Plug in the x- and y-values into the other original equation:
3x + 2y = -16
3(-4) + 2(-2) = -16
-12 + -4 = -16
-16 = -16 
Answer:
The top one I'm pretty sure.
Answer:the slope is -1
Step-by-step explanation:
Comparing them equation to
y=mx+c where m is there slope
y=-x-4 the slope is -1
Answer:
72112885110079700000000000000.00
Step-by-step explanation:
X(mean) = (600470170430300 + 23056 + 22123 + 21704 + 20365) / 5 = 120094034103510
n=5
S²(variance) = ((600470170430300-120094034103510)²+(23056-120094034103510)²+(22123-120094034103510)²*+(21704-120094034103510)²+(20365-120094034103510)²/(5-1)
S² = 72112885110079700000000000000.00
Answer:
4:14, 6:21, 8:28
Step-by-step explanation:
2x2=4 2x7=14 = 4:14
2x3=6 3x7=21 = 6:21
2x4=8 4x7=28 =8:28