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VLD [36.1K]
3 years ago
14

Pre calculus help!! pH of substance which has a hydronium ion concentration? help please!!

Mathematics
1 answer:
disa [49]3 years ago
7 0

-log(5.4x10^-9) = 8.27 = 8.3

 since 8.3 is greater than 7 it is basic

so the last answer is correct

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Evaluate 2p-nm-4, if m=3, p=15, and<br> n=5.
BabaBlast [244]

Step-by-step explanation:

given m = 3, p = 15 and n = 5,

2p - nm - 4 \\  = 2(15) - (5)(3) - 4 \\  = 30 - 15 - 4 \\  = 15 - 4 \\  = 11

3 0
3 years ago
Write an expression for the calculation divide 15 into thirds and subtract from 14 divided into half
Mazyrski [523]
15 ~ 3 - (14~2)       just a note, this ~ means the division sign
3 0
4 years ago
What are the minimum, first quartile, median, third quartile, and maximum of the data set?
allochka39001 [22]
If we rearrange the given data set from lowest to highest, we have 
     3,\:6,\:7,\:8,\:10,\:12,\:15,\:18

The minimum is 3.

The first quartile is the average of 6 and 7, which is 6.5

The median is the average of 8 and 10 which is 9.

The third quartile is the average of 12 and 15 which is 13.5.

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4 0
4 years ago
CLUES
storchak [24]
The number is 74.
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3 0
4 years ago
Read 2 more answers
A boat is 122 meters from the base of a lighthouse. The lighthouse is 34 meters tall. The angle formed with the lighthouse and s
mojhsa [17]

Answer:

about 16°

Step-by-step explanation:

Make sure your calculator is in degree mode.

Drawing the right triangle, we see that the shorter leg is 34 meters, and the longer leg is 122 meters. So the angle of elevation is:

\tan( \alpha )  =  \frac{34}{122}

\alpha  =  { \tan }^{ - 1}  \frac{34}{122}  = 15.57

3 0
3 years ago
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