Answer: First Choice. no solution
Step-by-step explanation:
<u>Given</u>
5 (x + 1) ≤ 5x + 3
<u>Expand parentheses and apply the distributive property</u>
5x + 5 ≤ 5x + 3
<u>Subtract 5x on both sides</u>
5x + 5 - 5x ≤ 5x + 3 - 5x
5 ≤ 3
5 ≤ 3 is not true, therefore, there is <u>no solution</u>.
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Answer for the first box: 38
Answer for the second box: -3
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Explanations:
To get the first answer, you plug in x = 0 to reflect were at the surface (height is 0)
38-3x = y
y = -3x+38
y = -3*0+38
y = 38
So the temperature at the surface is 38 degrees Celsius
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Each time x increases by 1 km, y decreases by 3 degrees C. How do we know? Because of the slope m = -3
Note how y = -3x+38 is in the form y = mx+b
m = -3 = -3/1 is the slope
slope = rise/run = -3/1
the "rise" being negative is really a fall or decrease. As we rise higher, the temperature goes down which is expected (It's colder higher up in the atmosphere)
Answer:
19 births/1,000 population • 8 deaths/1,000 population
Step-by-step explanation:
Since the ratio of students with green eyes to students with blue eyes in the graph is 20/10, we can see that there is 1 blue eyed student for every green eyed student. Meaning that there will be half as many blue eyed students as green eyed students. So if there are 300 students we know that there will be 150 blue eyed students.