1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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

You might be interested in
A shopper needs 48 hot dogs. The store sells identical hot dogs in 2 differently sized packages. They sell a six pack hot dog fo
Archy [21]

Answer:He should buy the six pack.

Step-by-step explanation:

The total number of hotdogs that the shopper needs is 48.

The store sells identical hot dogs in 2 differently sized packages. They sell a six pack hot dog for $2.10, and an eight pack of hot dog for $3.12.

If the shopper buys the six pack hot dog, he would need to buy 8 of it. The total cost would be

8 × 2.10 = $16.8

If the shopper buys the eight pack hot dog, he would need to buy 6 of it. The total cost would be

6 × 3.12 = $18.72

The 6 pack is cheaper than the eight pack. Therefore,

He should buy the six pack.

5 0
3 years ago
Find the value of the variable.
nalin [4]

Answer:

The variable, y is 11°

Step-by-step explanation:

The given parameters are;

in triangle ΔABC;          {}              in triangle ΔFGH;

Segment \overline {AB} = 14         {}               Segment \overline {FG} = 14

Segment \overline {BC} = 27         {}              Segment \overline {GH} = 19

Segment \overline {AC} = 19         {}               Segment \overline {FH} = 2·y + 5

∡A = 32°                       {}                ∡G = 32°

∡A = ∠BAC which is the angle formed by segments \overline {AB} = 14 and \overline {AC} = 19

Therefore, segment \overline {BC} = 27, is the segment opposite to ∡A = 32°

Similarly, ∡G = ∠FGH which is the angle formed by segments \overline {FG} = 14 and \overline {GH} = 19

Therefore, segment \overline {FH} = 2·y + 5, is the segment opposite to ∡A = 32° and triangle ΔABC ≅ ΔFGH by Side-Angle-Side congruency rule which gives;

\overline {FH} ≅ \overline {BC} by Congruent Parts of Congruent Triangles are Congruent (CPCTC)

∴ \overline {FH} = \overline {BC} = 27° y definition of congruency

\overline {FH} = 2·y + 5 = 27° by transitive property

∴ 2·y + 5 = 27°

2·y = 27° - 5° = 22°

y = 22°/2 = 11°

The variable, y = 11°

8 0
2 years ago
What is 7/8 in decimal
Pachacha [2.7K]
To get a decimal form of a fraction, divide the numerator by the denominator.
7/8 = 0.875
6 0
2 years ago
The probability of drawing a purple from a bag is 3/8. What is the probability of the complement?
In-s [12.5K]

Answer: 5/8

Step-by-step explanation:

3/8 + 5/8

Thanks for the free points

7 0
3 years ago
A rolling pin has two identical cylindrical handles attached to a larger handle that is 12 inches long. The large cylinder measu
yaroslaw [1]

Answer:

Volume of the rolling pin =  246.09 in^{3}  

Step-by-step explanation:

Length of larger cylinder L = 12 in

Diameter of larger cylinder D = 5 in

Diameter of two handles = 1.5 in

Length of two handles = 3 in

Volume of the rolling pin = Volume of two handles + Volume of larger cylinder

Volume of two handles = 2 (\pi r^{2}L)

Volume of two handles =  2 (3.14 × 0.75^{2} × 3 )

Volume of two handles = 10.59 in^{3}  

Volume of larger cylinder = (\pi r^{2}L)

Volume of larger cylinder = (3.14 × 2.5^{2} × 12 )

Volume of larger cylinder = 235.5 in^{3}  

Volume of the rolling pin =  10.59 + 235.5

Volume of the rolling pin =  246.09 in^{3}  

6 0
2 years ago
Other questions:
  • 30 miles
    8·2 answers
  • Evaluate 6g +1 for g =7
    10·2 answers
  • Barbara is building a wooden cabin. The cabin is 42 meters wide. She obtained a bunch of 27 meters long wooden beams for the roo
    8·1 answer
  • The mean per capita consumption of milk per year is 131 liters with a variance of 841. If a sample of 132 people is randomly sel
    6·1 answer
  • Please help me it’s very important, give a correct explanation
    9·1 answer
  • A construction crew is placing a square in a wall for a new window. The window is 3 1/8 feet wide. The wall has a length of 11 3
    11·1 answer
  • there are 3 yellow marbles and 4 silver marbles in a bag. You randomly choose one of the marbles. What is the probability of cho
    12·1 answer
  • ALGEBRA Find mZA in ABC if mZB = 38º and mZC = 38º.
    6·1 answer
  • 4.
    12·1 answer
  • The teachers have $25 to buy supplies . Write and evaluate a numerical expression to show how much more money they will need to
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!