The pH scale is a measurement system that indicates the concentration of ____________________ in solution.

The pH scale is a measurement system that indicates the concentration of : H+ ions

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Using the formula , where d is the distance in miles, r is the rate, and t is the time in hours, at what rate must you travel to cover 212.5 miles in 2.5 hours? (1 point)71 mph
106 mph
150 mph
85 mph **Weegy:** 106 mph (More)

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Expert Answered

Updated 9/20/2012 6:46:35 AM

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d=r*t

212.5=r*2.5

r=212.5/2.5

r=85

You must travel 85 mph to cover 212.5 miles in 2.5 hours.

212.5=r*2.5

r=212.5/2.5

r=85

You must travel 85 mph to cover 212.5 miles in 2.5 hours.

Added 9/20/2012 6:46:35 AM

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What is the simplified form of the expression?
–(8d – 3w) (1 point)8d + 3w
8d – 3w
–8d + 3w
–8d – 3w

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Updated 6/21/2014 1:18:59 PM

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–(8d – 3w) = -8d + 3w

Added 6/21/2014 1:18:59 PM

This answer has been confirmed as correct, not copied, and helpful.

What is the simplified form of the expression 13[62 ÷ (52 – 42) + 9]? a)169
b)585
c)181
d)26
**Weegy:** 585*9%*6= 315.90 (More)

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Updated 6/21/2014 1:18:30 PM

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13[62 ÷ (52 – 42) + 9]

= 13[62 ÷ 10 + 9]

= 13[6.2 + 9]

= 13(15.2)

= 197.6 = 197 3/5

= 13[62 ÷ 10 + 9]

= 13[6.2 + 9]

= 13(15.2)

= 197.6 = 197 3/5

Added 6/21/2014 1:18:30 PM

This answer has been confirmed as correct, not copied, and helpful.

Simplify the expression . 4sg over negative 5g **Weegy:** The result of (4 (a b))/(6 a) is (2 b)/3. The a cancels out and the 4/6 simplifies to 2/3. (More)

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Expert Answered

Updated 9/20/2012 6:34:03 AM

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