After solving the system x+2y=10 and x-2y=2. What is the sum of x+y equal to?

Mathematics

2 answers:

ale4655 [162]2 years ago

6 0

Answer:

6 + 2 = 8

Step-by-step explanation:

$x + 2y = 10 \\ + \\ x - 2y = 2 \\ = \\ 2x = 12 \\ x = 6 \\ 6 + 2y = 10 \\ 2y = 4 \\ y = 2 \\ x + y = 6 + 2 = 8$

Masja [62]2 years ago

5 0

Answer:

The sum of x and y is 8.

Step-by-step explanation:

x+2y=10

x-2y=2

------------

2x = 12, so x = 6. Substituting 6 for x in the 2nd equation, we get:

6 - 2y = 2, or

4 = 2y, or y = 2. The solution is therefore (6, 2).

The sum of x and y is 6 + 2 = 8 (answer)

You might be interested in

Ms. Gartland bought X number of shirts for the new members of her chorus. The cost

svetlana [45]

Answer: d.

Step-by-step explanation:

each shirt costs 12.25

3 0

3 years ago

If sine ⁡theta equals negative 8/17 and the terminal side of theta lies in quadrant IV, find cosine ⁡ theta .

Lelechka [254]

$\sin^2\theta+\cos^2\theta=1\implies \cos\theta=\pm\sqrt{1-\sin^2\theta}$

Since $\sin\theta=-\dfrac8{17}$ , it follows that

$\cos\theta=\pm\sqrt{1-\dfrac{64}{289}}=\pm\sqrt{\dfrac{225}{289}}=\pm\dfrac{15}{17}$

where the sign depends on the location of the terminal side of the angle. Since the terminal side lies in the fourth quadrant, that means the cosine of the angle is positive, so

$\cos\theta=\dfrac{15}{17}$

3 0

3 years ago

Anybody know the answer???

kap26 [50]

The three angles are 45, 75, and 60. The sides across from these angles correspond to the length of the sides. Since 45 < 60 < 75, MN < ON < MO. The answer is therefore C. MN, ON, MO.

Hope this helps!

5 0

3 years ago

The sum of the measures of the interior angles of a polygon with n sides is

defon

ANSWER

$(n - 2) \times 180 \degree$