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liubo4ka [24]
3 years ago
14

What's is the answer to 15n-19n

Mathematics
1 answer:
Art [367]3 years ago
8 0

Answer:

-4n

Step-by-step explanation:

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I need to figure out how many solutions does the system of equations below have.
Aleonysh [2.5K]

Answer:

The system has one solution.

Step-by-step explanation:

To find the number of solutions of the system, we equal both equations for y.

If we have ax = b, in which both a and b are different of 0, we have one solution.

If both a and b are 0, we have infinite solutions.

If a is 0 and b is not, there are no solutions.

y=6/7x-8 and y=7/9x+10/9

So

\frac{6x}{7} - 8 = \frac{7x}{9} + \frac{10}{9}

\frac{6x}{7} - \frac{7x}{9} = \frac{10}{9} + 8

\frac{54x - 49x}{63} = \frac{10}{9} + \frac{72}{9}

\frac{5x}{63} = \frac{82}{9}

45x = 63*82

Both a and b are different of 0, so the system has one solution.

6 0
2 years ago
TYPES OF TRIANGLES RIGHT ANGLED TRIANGLE ETC
user100 [1]

Answer:

Step-by-step explanation:

b) Parallelogram

c) Square

d) Parallelogram***

***Not too sure about this one.

7 0
2 years ago
What is 6(m + 4) =_m +_
Zielflug [23.3K]

Answer:

6m+24

Step-by-step explanation:

basically you multiply m and 4 by six soooo

6 times m is 6x

6 times 4 is 24

soo

6m+24 is correct

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5 0
3 years ago
PLEASE HELP!!!! 20 pts!If you could explain why that would be amazing!
Leona [35]
Float 

because the water weighs more so it will hold it.
8 0
3 years ago
Read 2 more answers
What are the values of the coefficients and constant term of 0 = 4 – 7x2 + x in standard form?
sweet [91]

Answer:

a = -7 and b = 1.  The constant term is 4

Step-by-step explanation:

In standard form, this equation is -7x^2 + x + 4 = 0

The coefficients are a = -7 and b = 1.  The constant term is 4.

7 0
3 years ago
Read 2 more answers
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