Which ordered pair is a solution of 5x + 4y = 18?
O (-3,6)
O (2,4)
O (8,2)
O (-2,7)
1 answer:
Answer:
(-2,7)
Step-by-step explanation:
Remember: (x, y), Substitute the numbers:
1. (-3, 6)
5 • -3 + 4 • 6 = 18
-15 + 24 = 18
9 = 18 X, incorrect
2. (2, 4)
5 • 2 + 4 • 4 = 18
10 + 16 = 18
26 = 18 X, incorrect
3. (8, 2)
5 • 8 + 4 • 2 = 18
40 + 8 = 18
48 = 18 X, incorrect
4. (-2, 7)
5 • -2 + 4 • 7 = 18
-10 + 28 = 18
18 = 18, ☆, correct!
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Then calculate.
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Answer:
5.20
Step-by-step explanation:
48 / 9.23 = 5.20043336945
rounded to tenth is 5.20
Hope This Helped
See picture for rough graph
Answer: -7/3≤t≤5/3
Step-by-step explanation:
|2t + 2/3|≤4
2t + 2/3≤4
(2t + 2/3≤4)*3
6t+2≤12
6t≤10
t≤10/6
<u>t≤5/3</u>
2t + 2/3>=-4
(2t + 2/3>=-4)*3
6t + 2>=-12
6t>=-14
t>=-14/6
<u>t>=-7/3</u>
-7/3≤t≤5/3
Answer:
40 miles
Step-by-step explanation:
10X4
