Let the two numbers be x and y.
Given,
x + y = 23
x = 23 - y
Also given,
y = 2x - 1
y= 2(23 -y) -1
y = 46 - 2y - 1
3y = 45
y = 15
x = 23 - y = 23 - 15 = 8
Hence, the two numbers are 15 and 8.
Answer:
y = -3/2x - 3
Step-by-step explanation:
Slope-Intercept Form: y = mx + b
Slope Formula: 
Step 1: Find slope <em>m</em>
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y = -3/2x + b
Step 2: Find y-intercept <em>b</em>
3 = -3/2(-4) + b
3 = 6 + b
b = -3
Step 3: Rewrite linear equation
y = -3/2x - 3
Answer:
![{ \tt{pH = - log[H {}^{ + } ]}} \\ pH = - log(4.2 \times {10}^{ - 5} ) \\ pH = 4.38](https://tex.z-dn.net/?f=%7B%20%5Ctt%7BpH%20%3D%20%20-%20%20log%5BH%20%7B%7D%5E%7B%20%2B%20%7D%20%5D%7D%7D%20%5C%5C%20%20pH%20%3D%20%20-%20%20log%284.2%20%5Ctimes%20%20%7B10%7D%5E%7B%20-%205%7D%20%29%20%20%5C%5C%20pH%20%3D%204.38)
Step-by-step explanation:
H
Answer:
56
Step-by-step explanation:
a + 89 + b
Let a= 12 and b = -45
12 + 89 - 45
101-45
56
Answer:
Millimeters per hour.
Step-by-step explanation:
Since its a water sprinkler, you would know that it doesn't cover miles of land, nor is it a food, so it isn't grams. Meters would seem like the right answer, but if you calculate meters to millimeters, you would see that meters are not covered in seconds. So the correct answer is millimeters per hour.
