$4x+y=7 \\
\underline{3x-y=0} \\
4x+3x=7+0 \\
7x=7 \ \ \ |\div 7 \\
x=1 \\ \\
3x-y=0 \\
3 \times 1-y=0 \\
3-y=0 \ \ \ |+y \\
y=3 \\ \\
(x,y)=(1,3)$

The answer is B. one solution.

6 0

3 years ago

Point A was marked on a number line at -3. Then point A is then moved to a position, point B, that is 11 less than its starting

ira [324]

Answer: -6

Step-by-step explanation:

i took the test my guy

7 0

3 years ago

Brent counted 5 red cards, 10 black cards, and 20 blue cards in a deck of cards. What is the ratio of blue cards to red cards?

Elena-2011 [213]

Answer:

20:5 - If you're going to simplify it, do 20/5 which is 4/1.

Step-by-step explanation:

6 0

1 year ago

10(a-2.5+0.56b) is this equivalent to 10a - 25+56b

kirill115 [55]

Hey there!

10(a - 2.5 + 0.56b)

= 10(a) + 10(-2.5) + 10(0.56b)

= 10a - 25 + 5.6b

= 10a + 5.6b - 25

Therefore, your answer is: 10a + 5.6b - 25

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

3 0

2 years ago