PROVE: ((1+cosx)/sinx)+(sinx/cosx)=((cosx+1)/(sinx+cosx)). Idk what to do because I'm pretty sure the way I did it was wrong...

Answers

Answer 1

Answer: I'll take the picture.
$(1+cos\theta)/(sin\theta)+(sin\theta)/(cos\theta)=\frac{cos\theta+1}{sin\theta{cos\theta}}$
Multiply by $sin\theta{cos\theta}$ to get:
$(1+cos\theta)sin\theta=cos\theta+1$ , which means that $sin\theta=1$ , like wtf?
I guess you got to this result.
Btw, if it's an equation you get that $\theta=k\pi$ , for k integer.

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Help me please I will UPVOTWhen you square each side of an equation, is the resulting equation equivalent to the original?

Answers

When you square each side of an equation then the resulting equation is not equivalent to the original

Yes, that is true.

If x = y, x² = y².
If x = y, substitute x into where y is;

x² = y²
x² = (x)²
Thus, yes they will be.

IM Algebra 1 Unit 2 lesson 3 practice problems #1-4

Answers

Answer:

3 is the answer of this question

What are the coefficients in the polynomial 5x^2 + 2x - 4?A: 5, 2
B: -5, -2
C: 5, 2, -4
D: 5, -2, -4

Answers

The solution is, A) 5, 2 are the coefficients in the polynomial 5x^2 + 2x - 4.

What are Polynomials?

Polynomials are sums of k-xⁿ terms, where k can be any number and n can be any positive integer.

here, we have,

given that,

the polynomial is : 5x^2 + 2x - 4

now, we have to find the coefficients in the polynomial 5x^2 + 2x - 4

we know that,

a coefficient is a multiplicative factor in some term of a polynomial, a series, or an expression; it is usually a number, but may be any expression. When the coefficients are themselves variables, they may also be called parameters.

and. we have,

a variable is a symbol that represents a mathematical object. A variable may represent a number, a vector, a matrix, a function, the argument of a function, a set, or an element of a set.

so, we get,

a coefficient is the number in front of the variable,

here, 5, 2 are the coefficients.

and the variable is x.

Hence, The solution is, A) 5, 2 are the coefficients in the polynomial 5x^2 + 2x - 4.

Know more about Polynomials here:

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A) 5, 2
Because a coefficient is the number in front of the variable, and the variable is x.

Robert bought a used car for $1,500. If the sales tax is 5% what will the total that Robert had to pay for the car

Answers

The total that Robert had to pay for the car will be $1,575.

What is the percentage?

The amount of any product is given as though it was a proportion of a hundred. The ratio can be expressed as a quarter of 100. The phrase % translates for one hundred percent. It is symbolized by the character '%'.

The percentage is given as,

Percentage (P) = [Final value - Initial value] / Initial value x 100

Robert bought a used car for $1,500. If the sales tax is 5%.

Let 'x' be the total price that he paid. Then the equation is calculated as,

5% = [(x - 1500) / 1500] x 100

Simplify the equation, then we have

0.05 = (x - 1500) / 1500

75 = x - 1500

x = 1500 + 75

x = $1575

The total that Robert had to pay for the car will be $1,575.

More about the percentage link is given below.