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
Brilliant_brown [7]
3 years ago
9

And this one you need to evaluate it please show your work I need help

Mathematics
2 answers:
grandymaker [24]3 years ago
7 0

Step-by-step explanation:

-5 + 2 - 8 - (-14) =

(-3) - 8 + 14 =

-11 + 14 =

3 =

not sure but here you go^^

mina [271]3 years ago
7 0

Answer:

Step-by-step explanation:Answer:

In science, a formula is a concise way of expressing information symbolically, as in a mathematical formula or a chemical formula. The informal use of the term formula in science refers to the general construct of a relationship between given quantities.

The plural of formula can be either formulas (from the most common English plural noun form) or, under the influence of scientific Latin, formulae (from the original Latin).[2]

In mathematics, a formula generally refers to an identity which equates one mathematical expression to another, with the most important ones being mathematical theorems.[3] Syntactically, a formula is an entity which is constructed using the symbols and formation rules of a given logical language.[4] For example, determining the volume of a sphere requires a significant amount of integral calculus or its geometrical analogue, the method of exhaustion.[5] However, having done this once in terms of some parameter (the radius for example), mathematicians have produced a formula to describe the volume of a sphere in terms of its radius:

{\displaystyle V={\frac {4}{3}}\pi r^{3}}V={\frac  {4}{3}}\pi r^{3}.

Having obtained this result, the volume of any sphere can be computed as long as its radius is known. Here, notice that the volume V and the radius r are expressed as single letters instead of words or phrases. This convention, while less important in a relatively simple formula, means that mathematicians can more quickly manipulate formulas which are larger and more complex.[6] Mathematical formulas are often algebraic, analytical or in closed form.[7]

In modern chemistry, a chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound, using a single line of chemical element symbols, numbers, and sometimes other symbols, such as parentheses, brackets, and plus (+) and minus (−) signs.[8] For example, H2O is the chemical formula for water, specifying that each molecule consists of two hydrogen (H) atoms and one oxygen (O) atom. Similarly, O−

3 denotes an ozone molecule consisting of three oxygen atoms[9] and a net negative charge.

In a general context, formulas are a manifestation of mathematical model to real world phenomena, and as such can be used to provide solution (or approximated solution) to real world problems, with some being more general than others. For example, the formula

F = ma

is an expression of Newton's second law, and is applicable to a wide range of physical situations. Other formulas, such as the use of the equation of a sine curve to model the movement of the tides in a bay, may be created to solve a particular problem. In all cases, however, formulas form the basis for calculations.

Expressions are distinct from formulas in that they cannot contain an equals sign (=).[10] Expressions can be liken to phrases the same way formulas can be liken to grammatical sentences.

You might be interested in
Suppose I ask you to pick any four cards at random from a deck of 52, without replacement, and bet you one dollar that at least
Tatiana [17]

Answer:

a) No, because you have only 33.8% of chances of winning the bet.

b) No, because you have only 44.7% of chances of winning the bet.

Step-by-step explanation:

a) Of the total amount of cards (n=52 cards) there are 12 face cards (3 face cards: Jack, Queen, or King for everyone of the 4 suits: clubs, diamonds, hearts and spades).

The probabiility of losing this bet is the sum of:

- The probability of having a face card in the first turn

- The probability of having a face card in the second turn, having a non-face card in the first turn.

- The probability of having a face card in the third turn, having a non-face card in the previous turns.

- The probability of having a face card in the fourth turn, having a non-face card in the previous turns.

<u><em>1) The probability of having a face card in the first turn</em></u>

In this case, the chances are 12 in 52:

P_1=P(face\, card)=12/52=0.231

<u><em>2) The probability of having a face card in the second turn, having a non-face card in the first turn.</em></u>

In this case, first we have to get a non-face card (there are 40 in the dech of 52), and then, with the rest of the cards (there are 51 left now), getting a face card:

P_2=P(non\,face\,card)*P(face\,card)=(40/52)*(12/51)=0.769*0.235=0.181

<u><em>3) The probability of having a face card in the third turn, having a non-face card in the first and second turn.</em></u>

In this case, first we have to get two consecutive non-face card, and then, with the rest of the cards, getting a face card:

P_3=(40/52)*(39/51)*(12/50)\\\\P_3=0.769*0.765*0.240=0.141

<u><em>4) The probability of having a face card in the fourth turn, having a non-face card in the previous turns.</em></u>

In this case, first we have to get three consecutive non-face card, and then, with the rest of the cards, getting a face card:

P_4=(40/52)*(39/51)*(38/50)*(12/49)\\\\P_4=0.769*0.765*0.76*0.245=0.109

With these four probabilities we can calculate the probability of losing this bet:

P=P_1+P_2+P_3+P_4=0.231+0.181+0.141+0.109=0.662

The probability of losing is 66.2%, which is the same as saying you have (1-0.662)=0.338 or 33.8% of winning chances. Losing is more probable than winning, so you should not take the bet.

b) If the bet involves 3 cards, the only difference with a) is that there is no probability of getting the face card in the fourth turn.

We can calculate the probability of losing as the sum of the first probabilities already calculated:

P=P_1+P_2+P_3=0.231+0.181+0.141=0.553

There is 55.3% of losing (or 44.7% of winning), so it is still not convenient to bet.

5 0
3 years ago
Factor: x^2 + 11xy - 26y^2
irina1246 [14]
Hello.

(x + 2y) • (x - 13y) Step by step solution :<span>Step  1  :</span><span>Equation at the end of step  1  :</span><span> ((x2) - 11xy) - (2•13y2) </span><span>Step  2  :</span>Trying to factor a multi variable polynomial :

<span> 2.1 </span>   Factoring   <span> x2 - 11xy - 26y2</span> 

Try to factor this multi-variable trinomial using trial and error<span> 

 </span>Found a factorization  :  (x + 2y)•(x - 13y)

Final result : (x + 2y) • (x - 13y)
<span>
Have a nice day</span>
3 0
2 years ago
Read 2 more answers
Which of these statements are true for joint variations? Check all that apply.
Fudgin [204]

Answer:

B and C

Step-by-step explanation:

Just did it on edg

8 0
3 years ago
Can someone answer #13, #15, and #16
Dominik [7]
#13: b
#14: c
#16: c

It is very easy, have a nice day :)
8 0
3 years ago
Read 2 more answers
Need answer????????????????????
zaharov [31]

Answer: .625 I believe

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • Half is a third of it.what is it?
    5·1 answer
  • The staff takes 1/2 of an hour to assemble 1/7 of the booths for a carnival. How long does it take the staff to assemble all of
    11·2 answers
  • The table shows the weight of a newborn infant for its first year. During which three-month period was the infant's weight gain
    7·1 answer
  • 100 POINTS! I REALLY NEED TO GET THIS CORRECT
    10·2 answers
  • (PLSSSS HELP, MY FATE IS IN YOUR HANDS) Determine which three out of the six points shown below are a solution to the equation x
    7·1 answer
  • Find the radius.<br> 120°<br> Sector Area = 66.99
    7·1 answer
  • Which expression is equivalent to 24x2 - 22x + 5?​
    15·1 answer
  • The graph shows two lines, A and B. Based on the graph, which statement is correct about the solution to the system of equations
    11·2 answers
  • The area of a square backyard is
    10·1 answer
  • Need help with this math hw
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!