$\left\{\begin{array}{ccc}x-4y=28\\2x+y=2&\text{multiply both sides by 4}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}x-4y=28\\8x+4y=8\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad9x=36\qquad\text{divide both sides by 9}\\.\qquad\boxed{x=4}\\\\\text{Put the value of x to the second equation:}\\\\2(4)+y=2\\8+y=2\qquad\text{subtract 8 from both sides}\\\boxed{y=-6}\\\\Answer:\ \boxed{x=4\ and\ y=-6\to(4,\ -6)}$

3 0

2 years ago

We want to partition 100 mL into 10 equal parts. How many milliliters should we pour in each cup?

satela [25.4K]

10 mililiters per cup

7 0

2 years ago

What is the density of an object having a mass of 8.0 g and a volume of 25 cm655-02-05-00-00_files/i0020000.jpg?

gogolik [260]

The answer is A. 0.32g/cm3

8 0

2 years ago

6 ten thousands 4 hundreds × 10

Katyanochek1 [597]

Answer:

604,000

Step-by-step explanation:

60,400 x 10

add one zero onto the end and replace the comma.

604,000

8 0

2 years ago