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3 years ago

14

I need step by step answer

1 answer:

Grace [21]3 years ago

8 0

Answer: 10⁻⁸°⁹

<u>Step-by-step explanation:</u>

$pH=log\bigg(\dfrac{1}{[H^+]}\bigg)\\\\\text{use log expansion rules to get:}\\pH=log\ 1-log\ [H^+]\\\\8.9=0\ -\ log\ [H^+]\\\\8.9=-log\ [H^+]\\\\-8.9=log\ [H^+]\\\\\text{use log transformation rules to get the following exponential equation:}\\10^{-8.9}=[H^+]$

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A basketball player makes 60% of his free throws. We set him on the line of free-throw and informed him to shoot free throws unt

pshichka [43]

Answer:

B. 0.03110

Step-by-step explanation:

Given

Probability of Hit = 60%

Required

Determine the probability that he misses at 6th throw

Represent Probability of Hit with P

$P = 60\%$

Convert to decimal

$P = 0,6$

Next; Determine the Probability of Miss (q)

Opposite probabilities add up to 1;

So,

$p + q = 1$

$q = 1 - p$

Substitute 0.6 for p

$q = 1 - 0.6$

$q = 0.4$

Next,is to determine the required probability;

Since, he's expected to miss the 6th throw, the probability is:

$Probability = p^5 * q$

$Probability = 0.6^5 * 0.4$

$Probability = 0.031104$

Hence;

<em>Option B answers the question</em>

7 0

3 years ago

What is the measure of the missing angle?<br> 40<br> 90

Lyrx [107]

Answer:

50°

Step-by-step explanation:

I am assuming that the shape is a right triangle.

All interior angles of a triangle add up to 180°.

$x + 40 + 90 = 180\\\rule{150}{0.5}\\x + 130 = 180\\\\x + 130 - 130 = 180 - 130\\\\\boxed{x = 50}$

The missing angle should be 50°.

Hope this helps.

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3 years ago

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The table below represents the atmospheric temperature at a location as a function of the altitude:

RSB [31]

from x15 to x 25 is 4 - -16 = -20 degree change

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4 years ago

Help !!!!!!!!!!!!!!!!

umka2103 [35]

Answer:

13) 8.6

Step-by-step explanation:

To find the side length, use a trig function to solve for x.

You have the adjacent side and hypotenuse to the angle. Use the cosine function since its ratio is adjacent over hypotenuse.

This means Cos 52 = x / 14. Solve for x.

Cos 52 = x / 14

14* Cos 52 = x

8.6 = x

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3 years ago

Astronomers measure large distance in light years one light year is the distance that light can travel in one year, or approxima

crimeas [40]

Answer:

78,792,000,000,000 miles

Step-by-step explanation:

(5.88 * 10^12) * 13.4 = 78,792,000,000,000

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3 years ago

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