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2 years ago

9

Find the value of x. Please help, it'd be appreciated :)

2 answers:

DaniilM [7]2 years ago

8 0

I would say B. not 100% sure tho

Ksenya-84 [330]2 years ago

4 0

The angle formed by the intersection of 2 tangents outside the circle equals half the difference of the <span>intercepted arcs.

</span>near arc = 108°
<span>far arc = 360 - 108 = 252</span>°

$x= \frac{252-108}{2}= \frac{144}{2}=72^o$

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What is the first step to solve the following system of equations using substitution?

Akimi4 [234]

Answer:

Step 1: Solve one of the equations for one of the variables. Let's solve the first equation for x

Thus, option A) is true.

The solution to the system of equations be:

$x = 4, y = 5$

Step-by-step explanation:

It is important to remember that when we solve the system of equations, the first step we need to do is to solve one of the equations for one of the variables.

Given the system of equations

$x - y = -1$

$2x - y = 3$

Step 1: Solve one of the equations for one of the variables. Let's solve the first equation for x

$x-y=-1$

Add y to both sides

$x-y+y=-1+y$

$x=-1+y$

Thus, option A) is true.

<u>NOW LET US SOLVE THE REMAINING PORTION</u>

$\mathrm{Subsititute\:}x=-1+y$ to solve for y

$\begin{bmatrix}2\left(-1+y\right)-y=3\end{bmatrix}$

$-2+y=3$

$y=5$

For x = -1 + y

substitute y = 5

$x=-1+5$

$x=4$

Thus, the solution to the system of equations be:

$x = 4, y = 5$

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