2 years ago

4) True or False? Our town is growing with a doubling time of 40 years, so its

Mathematics

1 answer:

mart [117]2 years ago

6 0

Answer:
False

Explain:

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3. Juliet rides her bike. During her ride, elevation

STatiana [176]

Answer:

56.4 miles

Step-by-step explanation:

4228/75 = 56.37333333

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4 years ago

Which expression is equivalent to the following expression? 4(x + 3) + 6(x - 3)

yuradex [85]

Answer:

The equivalent expression is 10x-6.

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3 years ago

What is the mean of this data set? 74, 81, 77, 88 *

Yanka [14]

Answer is 160

explanation: add all of them up and divid by how many numbers are in the data set
74+81+77+88=320
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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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3 years ago

Please help me out

Blizzard [7]

Answer:

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2 years ago