Please help me!!! I’m really struggling!

Mathematics

1 answer:

DanielleElmas [232]3 years ago

6 0

All straight lines equal 180 degrees that problem equals 210.

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Estimate the solution to the system of equations.

Georgia [21]

Answer:

Step-by-step explanation:

We are given the following system of equations;

{ 7x - y = 7, ⇒ Let us multiply the first equation by 2,

x + 2y = 6 }

2 * ( 7x - y = 7 ) ⇒ 14x - 2y = 14 ⇒ Now add the two equations

+ x + 2y = 6 + x + 2y = 6

14x + x = 14 + 6 ⇒ Simplify

15x = 20,

<em>x = 4 / 3</em> ⇒ Now substitute this value of x into the first equation to solve for the value of y,

7 * ( 4 / 3 ) - y = 7 ⇒ Simplify,

28 / 3 - y = 7,

y = 7 / 3

<em>Solution; x = 4 / 3, y = 7 / 3</em>

5 0

3 years ago

You need pens, pencils and notebooks. You have $102 to spend and you must spend it all. Pens are $5, pencils are $3 and notebook

Bad White [126]

Answer:21

Step-by-step explanation: snap:itzcringgxd

3 0

3 years ago

Please help

Murrr4er [49]

<h3>You have the correct answer. It is choice B. Nice work.</h3>

K is the midpoint, so $\overline{IK} \cong \overline{GK}$ and $\overline{JK} \cong \overline{HK}$ , and along with the congruent vertical angles ( $\angle GKH \cong \angle IKJ$ and $\angle GKJ \cong \angle IKH$ ), you would use the SAS (side angle side) congruence theorem to prove the inner pairs of triangles to be congruent.

So, $\triangle HKG \cong \triangle JKI$ (top and bottom triangles) and $\triangle GKJ \cong \triangle IKH$ (left and right triangles).

Then through CPCTC, we can show the corresponding pieces are congruent leading to $\overline{GH} \cong \overline{JI}$ and $\overline{GJ} \cong \overline{HI}$ showing the opposite sides of the quadrilateral are congruent. Therefore we do have a parallelogram and enough information to prove it as such.