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svlad2 [7]
3 years ago
11

URGENT !!!

Mathematics
1 answer:
Sedaia [141]3 years ago
8 0

Answer:

{ \tt{pH =  -  log[H {}^{ + } ]}} \\  pH =  -  log(4.2 \times  {10}^{ - 5} )  \\ pH = 4.38

Step-by-step explanation:

H

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Help pleasee<br>on the image <br>with the steps.​
melisa1 [442]
6n + 28 because the difference is 12 so if u half that to get the second it’s 6 hence 6n and then u have to add 6 to 22 to get 28 and it’s a positive number so therefore the expression is 6n+ 28
4 0
3 years ago
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A taxi charges $1.75 plus a fee of 0.75 $ for each mile traveled the total cost of a ride without a tip is $4.75 how many miles
pshichka [43]
The answer is 1.75miles.
3 0
3 years ago
The statue of Liberty stands on a 150 ft. pedestal. From a point 250 ft. from the base of the
bekas [8.4K]

Answer:

148ft

Step-by-step explanation:

To solve this question, you'll have to imagine the statue makes a right angle triangle with the base since it has an angle of elevation from the base to the top of the torch.

Assuming the height from the pedestal to the top of the torch is y

The height of the statue is x

But we know the height of the pedestal = 150ft

The distance from the observer to the base of the pedestal = 250ft

And the angle of elevation = 50°

See attached document for better illustration.

Tanθ = opposite / adjacent

θ = 50°

Adjacent = 250

Opposite = y

Tan50 = t / 250

y = 50 × tan50

y = 50 × tan50

y = 50 × 1.1917

y = 297.925ft

The height of the statue from the base of the pedestal to the top of the torch is 297.925ft

The height of the statue = x

x = (height of the statue + height of the pedestal) - height of the pedestal

x = y - 150

x = 297.925 - 150

x = 147.925ft

Approximately 148ft

The height of the statue is 148ft

4 0
3 years ago
Multiply 5 1/2 x 1 2/5​
Masja [62]

Answer:

The answer I got was 7 7/10

(sorry if wrong!)

5 0
3 years ago
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PLEASE PLEASE PLEASE HELP!!!!!!!!!!!!!!! Monsters, Inc. has been Accident Free for 47 days out of 365. What percentage of days h
givi [52]

Answer:

12.8767123288% so maybe 12.9

Step-by-step explanation:


5 0
3 years ago
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