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Inga [223]
3 years ago
13

Factor this expression completely x^2 - 9

Mathematics
1 answer:
tekilochka [14]3 years ago
8 0
x^2-9=(x-3)(x+3)
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Graph the line y = kx +1 if it is known that the point M belongs to it: M(1,3)
tigry1 [53]

Answer:

M(x,y) = (1,3) belongs to the line y = 2\cdot x +1. Please see attachment below to know the graph of the line.

Step-by-step explanation:

From Analytical Geometry we know that a line is represented by this formula:

y=k\cdot x + b

Where:

x - Independent variable, dimensionless.

y - Dependent variable, dimensionless.

k - Slope, dimensionless.

b - y-Intercept, dimensionless.

If we know that b = 1, x = 1 and y = 3, then we clear slope and solve the resulting expression:

k = \frac{y-b}{x}

k = \frac{3-1}{1}

k = 2

Then, we conclude that point M(x,y) = (1,3) belongs to the line y = 2\cdot x +1, whose graph is presented below.

3 0
3 years ago
Factor. 31)............
Semmy [17]

Answer:

6(8x-3)x(3x²-7)

Step-by-step explanation:

144x³-54x²-336x+126

=6(24x³-9x²-56x+21)

=6(3x²x(8x-3)-7(8x-3))

=6(8x-3)x(3x²-7)

4 0
3 years ago
You have a 36 foot fence that have a 4 equal side you painted 1/4 what fraction have you completed
k0ka [10]

we have completed 9/36=1/4 of the fence

5 0
3 years ago
Two triangles are similar, and the ratio of the corresponding sides is 1:5, and which of the following is true?
IrinaK [193]

Answer:

c

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
(ASAP)Someone help me out please
ludmilkaskok [199]

Answer:

Y= 1/3x + 4

Step-by-step explanation:

4 is the y intercept and it goes across one and down 3 for the get the slope of  1/3.

8 0
3 years ago
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