3 years ago

Factor the expression 2^2 +4-12

Mathematics

1 answer:

alekssr [168]3 years ago

4 0

It can't be

There is no variable

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Answer: 128 pages are text

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3 years ago

The hydrogen ion concentration (h+) in a certain cleaning compound is (h+)=3.2x10^-11 use the formula ph=-log(h+) to find the pH

Furkat [3]

Answer:

The $pH$ of the clean compound is approximately 10.495.

Step-by-step explanation:

If the cleaning ion concentration of the cleaning compound is $[H^{+}] = 3.2\times 10^{-11}$ , then the $pH$ , no unit, of the compound is:

$pH = -\log_{10} [H^{+}]$ (1)

$pH = -\log_{10} (3.2\times 10^{-11})$

$pH = -\log_{10} 3.2 - \log_{10} (10^{-11})$

$pH = -\log_{10} \frac{32}{10} +11$

$pH = -\log_{10} 32 + \log_{10} 10 + 11$

$pH = -\log_{10} 32 +12$

$pH \approx 10.495$

The $pH$ of the clean compound is approximately 10.495.

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2 years ago

Find x if: 1. 125x^3=b^9 2.16x2=1

vitfil [10]

1 x^3 = b^9 / 125

x = b^3 / 5

2. x^2 = 1 /2.16

x = sqrt 1/2.16

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2 years ago

5 Given volume of rectangular prism is 432 m. h 12 m 4 m Find height?

Tamiku [17]

Answer:

Step-by-step explanation:

volume = length x width x height so

432 / 12 / 4 = 9

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2 years ago

There is 1/4 ounce of yeast in every 2 1/4 teaspoons of yeast. A recipe for bread calls for 2 teaspoons of yeast. How many ounce

tino4ka555 [31]

1/4 ounce per 1/2 teaspoon
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3 years ago

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