what questions are you talking about?
Answer:
Option D
Step-by-step explanation:
They have different slopes but same Y intercepts so there is ONE SOLUTION.
8800 yards. I think, not sure.
This is the image the points form, if you know your quadrilaterals, this should make it easier to picture and label. Need any further explanation?
The answer is 24 screws, 6 bolts, and 12 washers.
s - the number of screws
b - the number of bolts
w - the number of washes
<span>The cost of screws are $3.00 each: 3s
</span><span>The cost of bolts are $2.00 each: 2b
</span><span>The cost of washers are $1.0 each: 1.5w
</span><span>A hardware store makes a mixed bag of 42 items using screws, bolts, and washers: s + b + w = 42
</span><span>The mixture calls for four times as many screws than bolts: s = 4b
</span>The total cost of the mixture is $102.00: 3s + 2b + 1.5w = 102
The system of three equations:
(i) s + b + w = 42
(ii) s = 4b
(iii) 3s + 2b + 1.5w = 102
Substitute s from (ii) equation into (i) equation and express it in the term of w:
4b + b + w = 42
5b + w = 42
w = 42 - 5b
Substitute s from (ii) equation and w from (i) equation into (iii) equation:
3 * 4b + 2b + 1.5(42 - 5b) = 102
12b + 2b + 63 - 7.5b = 102
6.5b + 63 = 102
6.5b = 102 - 63
6.5b = 39
b = 39 : 6.5
b = 6
s = 4b = 4 * 6 = 24
w = 42 - 5b = 42 - 5 * 6 = 42 - 30 = 12