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
77julia77 [94]
3 years ago
12

How do you represent an unknown quantity?

Mathematics
1 answer:
Dennis_Churaev [7]3 years ago
5 0

Answer: With a variable. A variable is a letter you use in an equation , like this: 7+x=14, X is a classic one but you can use any letter u please! (In my school at least.)

You might be interested in
Simplify and write the trig expression in terms of sin and cos
dsp73

We have:

cot(-x)cos(-x)+sin(-x)=-\frac{1}{f(x)}

Then we use trigonometric identities to change the negative sign of the trigonometric functions, so:

-sin(x)-cot(x)cos(x)=-\frac{1}{f(x)}

We clear f(x):

f(x)=\frac{1}{sin(x)+cot(x)cos(x)}=\frac{1}{sin(x)+\frac{cos(x)}{sin(x)}cos(x)}=\frac{1}{sin(x)+\frac{cos^2(x)}{sin(x)}}

we simply what we can:

f(x)=\frac{1}{\frac{sin^2(x)+cos^2(x)}{sin(x)}}=sin(x)

Thus, the correct answer is;

f(x)=sin(x)

6 0
1 year ago
I need to find the equal expression to -m(2m+2n)+3mn+2m². Help please?
spin [16.1K]

m(2m+2n)+3mn+2m^2\implies \stackrel{\textit{distributing}}{2m^2+2mn}+3mn+2m^2 \\\\\\ 2m^2+2m^2+2mn+3mn\implies \stackrel{\textit{adding like-terms}}{4m^2+5mn}

4 0
3 years ago
Which of the following are coefficient
malfutka [58]

Answer:

2 and -3

Step-by-step explanation:

because a coefficient is a numerical or constant quantity placed before and multiplying the variable in an algebraic expression (e.g. 4 in 4x).

so in 2x-3y+5, 2 and -3 are the coefficients.

4 0
3 years ago
What are the leading coefficient, constant term and degree, if any, of the algebraic expression
nasty-shy [4]
Coefficients are the numbers in from with the variable, the constant is just a number and the degree is the exponent.
6 0
3 years ago
Solve 7 x - 15 = -2.
Arisa [49]
7x-15=-2 Move -15 to the rigjt side, 7x=-2+15 7x=13 Divide both sides by 7, 7x/7=13/7 x=13/7
6 0
3 years ago
Other questions:
  • Determine the range of the function: (0,2)(2,4)(4,6)(6,8)(8,10) Options: A) y<_10 B) {2,4,6,8,10} C) 2<_y<_10 D) {0,2,4
    8·1 answer
  • Plz answer this quickly
    8·1 answer
  • Please help! 30 points! (it doens't say 30 points but it gives it to you after a second person answers)
    8·1 answer
  • Which triangles could not be similar to triangle ABC ? triangle a b c where angle b is a right angle. side a b is 15 cm. side b
    5·1 answer
  • Solve for r: 4r - 9&gt;7<br><br> r&gt;1/2<br><br> r&gt;5<br><br> r&gt;4<br><br> r&gt;1/4
    13·1 answer
  • Please help with math
    13·2 answers
  • Matteo is following this recipe to make a cake.
    11·2 answers
  • What are the steps to graphing a linear equation?
    12·2 answers
  • Create a dot plot showing a uniform distribution.
    11·1 answer
  • The recipe says he needs 450 grams of rice for 6 people
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!