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3 years ago

5

Which equation has the solution x = 5? Select each correct answer.

1 answer:

Nady [450]3 years ago

4 0

Choices 1 and 3 are correct. I cannot tell about choice too, as there is no X

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Find each product with work (3g + 2)(3g–2)

Amiraneli [1.4K]

Answer:

See explanation!

Step-by-step explanation:

<u>Due to the way the question is expressed we will assume that it means to find the product of this expression (thus simplify or factor our the equation). </u>

So let us solve as following:

$(3g+2)(3g-2)=0\\\\(3g)(3g)+(3g)(-2)+(2)(3g)+(2)(-2)=0\\\\9g^2-6g+6g-4=0\\\\9g^2-4=0\\9g^2=4\\\\g^2=\frac{4}{9}\\ \\g=(+/-)\sqrt{\frac{4}{9} } \\\\g=(+/-)\frac{2}{3}$

So we have factored our the expression and solve for the values of $g$ which since its <em>squared, </em>the solution can be either positive or negative. Thus

$g=\frac{2}{3}\\$ and $g=-\frac{2}{3}$

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3 years ago

Ejemplo: Martin necesita sembrar unos terrenos de cultivo. Ha gestionado un

AveGali [126]

Answer:

Step-by-step explanation:

10

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3 years ago

(20 points)Solve the equation cos x = sin (x + 22)

Law Incorporation [45]

Answer:

$\bold{x = 34^\circ}$

Step-by-step explanation:

Given:

$cos x = sin (x + 22^\circ)$

To solve:

The given equation.

Solution:

First of all, let us consider an important property of sine and cosine.

$sin(90^\circ-\theta )=cos\theta$

OR

$cos(90^\circ-\theta )=sin\theta$

We can apply above property to solve for $x$ as per given equation.

$cos x = sin (x + 22^\circ)$

Changing $cosx$ to sine form:

$cosx=sin(90^\circ-x)$

$cosx=sin(90^\circ-x) = sin(x+22^\circ)$

$\therefore 90^\circ-x=x+22^\circ\\\Rightarrow 90^\circ-22^\circ=x+x\\\Rightarrow 2x=68^\circ\\\Rightarrow \bold{x = 34^\circ}$

So, solution to the equation $cos x = sin (x + 22^\circ)$ is:

$\bold{x = 34^\circ}$

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3 years ago

Solve the equation for x.

svetoff [14.1K]

The answer to the equation 1/3(6x-15)= 1/2(10x-4) is D. -1

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3 years ago

The expression 3.25b + 2h gives the cost of b burgers and h hotdogs what is the cost of 4 burgers and 6 hotdogs

timama [110]

$3.25b + 2$
the answer s 3.456

8 0

3 years ago