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coldgirl [10]
3 years ago
12

What is true when a system of equations has infinitely many solutions?

Mathematics
1 answer:
hjlf3 years ago
4 0
B. The lines coincide
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Help ! solve the following system of equations <br><br> -9x+2y=-13<br><br> 2x-9y=20
Stella [2.4K]

Answer: x = 1, y = -2

Step-by-step explanation:

-9x+2y=-13

x= 13/9 + 2/9y

2x-9y=20

2(13/9+2/9y)-9y=20

<em>Substitute y with -2.</em>

<em />

x= 13/9+2/9(-2)

<em>After solving you'll see that 1 is a possible solution for x.</em>

<em />

Check your answer

-9x+2y=-13

-9x1+2(-2) = -13

2x-9y=20

2x1-9(-2) = 20

-13 = -13

20 = 20

Therefore, x=1 and y=-2

5 0
3 years ago
I will give brainliest !!
tekilochka [14]

Answer:

D

Step-by-step explanation:

When all the members in a domain has only but one member in the do main then function has been satisfied.

considering a situation of,

4 1

6 1

8 2

the domain has only one member in the Co domain hence which makes it a function

6 0
3 years ago
Tow ordinary fair dice are rolled completely in the tree diagram. Work out the probability that exactly one of the dice lands on
Lostsunrise [7]

Answer:

1/3 (one third)

Because there are only 4 numbers on 2 die that have numbers less than 3 so 4 twelfths equals one third

Step-by-step explanation:

6 0
2 years ago
Sales tax on an item is directly proportional to the cost of the item purchased. If the tax on a 600 item is 36, what is the sal
sdas [7]
The sales tax $950 item would be $57. Hope this helps!
6 0
3 years ago
What is 2y to the power of 4 times 5y to the power of 5<br><br>please help 12 points reward
Art [367]

Answer:

50000y^9.

Step-by-step explanation:

(2y)^4 * (5y)^5

= 2^4 y^4 *  5^5 y^5

= 16y^4 * 3125y^5

= 50000y^9.

8 0
3 years ago
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