2 years ago

5x-6y=-15 5x+6y=12 use elimination

1 answer:

4 0

<span>5x-6y=-15
5x+6y=12
---------------add
10x = -3
x = -3/10
x = -0.3

</span>5x+6y=12
5(-0.3) + 6y = 12
6y = 12 + 1.5
6y = 13.5
y = 13.5 / 6

y = 2.25

You might be interested in

Use the Fundamental Counting Principle to find the total number of possible outcomes.

krok68 [10]

Answer:

gfhcfgjcfgjdfgjvhjvhkftfhcyjftyjvjftykftyvgjcgjfyfg gjvvgvggvgvhjvhvg

Step-by-step explanation:

vgjkcgyjvghj vhjvjvhvhjvhjvghjghjvghjvhjhvgghvghvhvhvhvhjvghjvghjvh .jvghvghj gj vjvhjvhjv .v .hvhjvhjvhvb vh vv bhjvb f

4 0

2 years ago

Please help this is about be getting a 4/4 in my math class now I have 3/4 I want to get 4/4 please help...

r-ruslan [8.4K]

Answer:

Step-by-step explanation:

8 0

3 years ago

What is the solution x+2y=7 and x-2y=-1

erica [24]

$\underline{+\left\{\begin{array}{ccc}x+2y=7\\x-2y=-1\end{array}\right}\qquad\text{add both sides of the equations}\\\\.\qquad\qquad2x=6\qquad\text{divide both sides by 2}\\.\qquad\qquad \boxed{x=3}\\\\\text{Put the value of x to the first equation}\\\\3+2y=7\qquad\text{subtract 3 from both sides}\\\\2y=4\qquad\text{divide both sides by 2}\\\\\boxed{y=2}\\\\Answer:\ \boxed{x=3\ and\ y=2\to(3,\ 2)}$

7 0

2 years ago

A circle has a diameter of 8m. What is its circumference?

Maslowich

The answer should be 25.12

6 0

2 years ago

What is the value of (6.6*10¹⁷)-(9.2*10¹⁴) over (4*10¹⁶)

Gennadij [26K]

Answer:

6.59999999999999999977 × 10^17

Step-by-step explanation:

6.6 x 10^17 - (9.2 x 10^14)/(4 x 10^16)

4 0

2 years ago