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
Korvikt [17]
3 years ago
11

The library is to be given 7 books as a gift. The books will be selected from a list of 15 titles. If each book selected must ha

ve a different title, how many possible selections are there?
Mathematics
1 answer:
Elanso [62]3 years ago
5 0
If each book selected must have a different title, THERE ARE 15 POSSIBLE SELECTIONS.
You might be interested in
Help wanted can someone help me and give me a short understanding of this
Citrus2011 [14]
Y = 104°
z = 24

Angle y° and (5z - 44)° are linear pairs, meaning that the two measures together will add up to 180°.
To solve for z, know that (5z - 44)° and 76° are vertical angles, meaning that both angles are the same.
So simply set them equal to each other to find z:
5z - 44 = 76
5z = 76 + 44
5z = 120
z = 24

Now to solve for y, remember that since (5z - 44)° and 76° are vertical angles, they are the same, meaning you can denote (5z - 44)° as simply 76°. Like I said earlier, y and 76° are a linear pair so simply subtract 76 from 180 to find y:
180 - 76 = 104°
7 0
3 years ago
An acid is a substance that increases the concentration of H3O+ ions in solution. Look at the reaction below of phenol (C6H5OH)
Law Incorporation [45]

Answer:

The reactant that acts as an acid, by contributing an H⁺ ion to create H3O+ in the chemical equation is C₆H₅OH.

Step-by-step explanation:

According to Brønstend-Lowry, an acid is a substance that transfer a proton (hydrogen cation, H⁺) to a base, forming a base conjugate for the first and an acid conjugate for the second.      

From the following reaction:

C₆H₅OH(aq) + H₂O(l)  →  C₆H₅O⁻(aq) + H₃O⁺(aq)

   

We have that the C₆H₅OH transfer a proton to the water to form its conjugate base C₆H₅O⁻ and the conjugate acid of water H₃O⁺. Hence, the C₆H₅OH is the acid and the water is the base.

Therefore, the reactant that acts as an acid, by contributing an H⁺ ion to create H3O+ in the chemical equation is C₆H₅OH.

I hope it helps you!

8 0
3 years ago
Read 2 more answers
Find the x-intercept of the graph of the equation: 4x + y = 3
Anon25 [30]

The x-intercept is where the y is zero. So, we have just enough info :) Simply plug in 0 for y in order to find x.

4x + 0 = 3

x = 3/4

so the x intercept is (3/4, 0)

__________________

Please let me know if you have any questions :3

7 0
3 years ago
Do the lines -x+5y=22 and 7x-2y=19 intersect
melomori [17]
Yes, they intersect at roughly (4.2,5.2).
3 0
4 years ago
Mickey’s beagle has a mass of 15 kilograms. His dachshund has a mass of 13 kilograms. What is the combination of both?
SVEN [57.7K]
A combination is the weight of the two dogs added. If one dog weighs 15 kilos, while the other weighs 13 kilos, we must add 15 to 13. 15 plus 13 is 28, so the combination of the two dogs is 28.
3 0
3 years ago
Other questions:
  • Help me please is it (a)<br> (B)<br> (C)<br> (D) <br> Thank you
    9·2 answers
  • 1. Calvin goes shopping over the weekend and buys a new pair of shoes, a t-shirt, a pair of
    13·1 answer
  • Is the complement of a congruent angle it’s supplement
    14·1 answer
  • How many millimeters are in one mile???
    13·1 answer
  • What is the amount of time​
    6·1 answer
  • 15% of $17,500 <br><br> 9.5% of $15,000<br><br> 11% of $18,050 <br><br> 10.5% of $21,000
    6·1 answer
  • Divide nine by three, then subtract two double the results
    15·2 answers
  • Here is a circle, centre O, and the tangent to the circle at the point (8,15)
    13·2 answers
  • A laptop computer originally priced at ​$1,000 now sells for ​$1,300. What is the percent of​ increase?
    8·2 answers
  • Find the remainder when f(x)=−2x3+x2−4x+1 is divided by x+3.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!